CN106018281A - Quantitative method and quantitative system of chelating agent - Google Patents
Quantitative method and quantitative system of chelating agent Download PDFInfo
- Publication number
- CN106018281A CN106018281A CN201610173656.2A CN201610173656A CN106018281A CN 106018281 A CN106018281 A CN 106018281A CN 201610173656 A CN201610173656 A CN 201610173656A CN 106018281 A CN106018281 A CN 106018281A
- Authority
- CN
- China
- Prior art keywords
- chelating agen
- solution
- turbidity
- quantitative
- metal ion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Processing Of Solid Wastes (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides a quantitative method and quantitative system which can easily detect existance of chelating agent in a solution and quantitative measure the chelating agent in the solvent. The quantitative method comrpises the steps of: mixing a test sample which is chelated in water, removing hte test sample to form a solution, adding metal ions according to certain quantity to the solution, measuring turbity of the solution with addition of the metal ions, and quantitatively measuring the chelating agent in the solution. The method easily detect existance of the chelating agent in the solution according to generation of metal chelates, and easily quantitatively measure the chelating agent in the solution by measuring the turbity of hte solution.
Description
The application advocates based on Japanese patent application filed in 25 days March in 2015 the 2015-062411st
Priority.The full content of this Japanese publication is by with reference to being applied in this specification.
Technical field
The present invention relates to quantitative approach and the chelating agen quantitative system of a kind of chelating agen.
Background technology
Burning ash (especially flying in waste gas in the residue produced when burning industrial waste etc. and waste gas
Ash) in sometimes with heavy metal.In order to protect environment, need this heavy metal being contained in burning ash is entered
Row harmless treatment.As harmless treatment, such as can enumerate carry out solidifying by cement etc. method (Gu
Change processes) and utilize the chelating agen of organic polymer class to make method (insoluble place that heavy metal portion dissolves
Reason) etc..When carrying out insoluble process, in order to reliably sentence according to the test of No. 13 methods of Environment Ministry's bulletin
Breaking, it is the most insoluble heavy metal, is generally added in burning ash by the chelating agen of excess.But, above-mentioned chela
Mixture is difficult to natural decomposition, and expensive, easily obtains in above-mentioned insoluble process it is proposed that have
In the method for suitable consumption of chelating agen in burning ash to be added to.
Such as, there iing following method described in following patent documentation 1: insoluble in order to obtain in heavy metal
The amount of chelating agen required in process, to the eluent filtered the water being mixed into burning ash and obtain
In, add, as reagent, the solution that copper nitrate solution etc. is coloured by metal ion.In the method, according to inciting somebody to action
When this reagent makes an addition in eluent, mixed liquor has non-coloring to judge in this eluent with or without excessive chelating agen
(that is, the chelating agen not reacted with heavy metal).
Patent documentation 1: International Publication the 2014/057900th
In the method described in above-mentioned patent documentation 1, owing to only having non-coloring to sentence by mixed liquor
Disconnected, thus while the chelating agen of excess can easily be determined whether, but the chelating agen of excess cannot be obtained
Amount.
Summary of the invention
The present invention completes in view of this problem, its object is to provide one can easily measure molten
With or without chelating agen and quantitative approach and the chela that the chelating agen in solution can be carried out quantitative chelating agen in liquid
Mixture quantitative system.
The quantitative approach of chelating agen involved in the present invention possesses following operation: by the survey after chelation treatment
Determine object to be mixed in water, then remove this measuring object, thus form solution；Add rule in the solution
Quantitative metal ion；And measure the turbidity of solution being added with metal ion, and accordingly to the chela in solution
Mixture is carried out quantitatively.
According to the quantitative approach of chelating agen involved in the present invention, mensuration is added with the metal ion of ormal weight
The turbidity of solution.When measuring object is carried out chelation treatment, the chelating agen of use remains in the solution,
Make solution occur suspending, therefore, it is possible to easily measure because of the chelating agen of residual and the reaction of metal ion
With or without chelating agen in solution.Further, the concentration of the chelating agen of residual is the biggest, is added with the solution of metal ion
Turbidity the biggest, therefore by above-mentioned quantitative approach, it is possible to easily measure in solution with or without chelating agen,
And this chelating agen can be carried out quantitatively.
The quantitative approach of chelating agen involved in the present invention possesses following operation: by burning after chelation treatment
Ashing is mixed in water, then removes this burning ash, thus forms solution；Add the gold of ormal weight in the solution
Belong to ion；And measure the turbidity of solution being added with metal ion, and accordingly the chelating agen in solution is carried out
Quantitatively.
According to the quantitative approach of chelating agen involved in the present invention, mensuration is added with the metal ion of ormal weight
The turbidity of solution.When burning ash is carried out chelation treatment, the chelating agen of use remains in the solution, because of residual
The reaction of the chelating agen stayed and metal ion and make solution occur suspending, therefore, it is possible to easily measure solution
In with or without chelating agen.Further, the concentration of the chelating agen of residual is the biggest, is added with solution turbid of metal ion
Spend the biggest, therefore by above-mentioned quantitative approach, it is possible to easily measure in solution with or without chelating agen, and
This chelating agen can be carried out quantitatively.
In the quantitative approach of chelating agen involved in the present invention, metal ion can be copper ion, chelating agen
It can be aminodithioformic acid quasi-chelate compound.Aminodithioformic acid quasi-chelate compound is easily combined with copper ion
And form water-fast copper complex, and turbid relative to the solution of the amount of the chelating agen residued in solution
The climbing of degree is relatively low, and the concentration of the chelating agen under the most measurable maximum turbidity uprises.Therefore, make
When using copper ion, can becoming greatly by quantification range of the chelating agen in solution.
In the quantitative approach of chelating agen involved in the present invention, metal ion can be nickel ion, chelating agen
It can be aminodithioformic acid quasi-chelate compound.Combination by aminodithioformic acid quasi-chelate compound Yu nickel ion
And the nickel complex that formed is water insoluble, and stably exist in solution.Thus, add in the solution
During nickel ion, it is possible to accurately measure and residue in solution with or without chelating agen.Further, nickel is added in the solution
During ion, higher relative to the climbing of the solution turbidity of the amount of the chelating agen residued in solution, therefore can
Enough accurately it is confirmed whether to remain chelating agen, even and if remaining that the concentration of chelating agen is minimum also to be able to it
Accurately carry out quantitatively.
In the quantitative approach of chelating agen involved in the present invention, measure solution by transmission light measurement method
Turbidity.In the case of the turbidity being measured solution by transmission light measurement method, such as, use with scattered light measuring
Sensing equipment etc. compare, it is possible to set manufacturing, than less expensive price, the mensuration used in transmission light measurement method
Standby and also be capable of miniaturization.Therefore, it is simple to mobile said determination equipment, beyond specific facilities
Place also is able to easily measure the turbidity of solution.
Chelating agen quantitative system involved in the present invention possesses: filter house, filters slurry, described slurry
Material is dispersed with measuring object, containing using chelating agen to carry out insoluble process in described measuring object
Heavy metal；Mixing unit, the metal ion that in the eluent eluted in filter house, hybrid regulatory is quantitative；Survey
Determine portion, measure the turbidity of the mixed liquor mixed with metal ion by eluent and obtain；And quantitative portion, according to
The turbidity of the mixed liquor that determination part is obtained, is carried out quantitatively the chelating agen in mixed liquor.
Further, chelating agen quantitative system involved in the present invention possesses: filter house, filters slurry,
Described slurry is dispersed with burning ash, containing using chelating agen to carry out insoluble process in described burning ash
Heavy metal；Mixing unit, the metal ion that in the eluent eluted in filter house, hybrid regulatory is quantitative；Measure
Portion, measures the turbidity of the mixed liquor mixed by eluent and obtain with metal ion；And quantitative portion, according to survey
Determine the turbidity of the mixed liquor that portion is obtained, the chelating agen in mixed liquor is carried out quantitatively.
According to the quantitative system of these chelating agen involved in the present invention, when slurry is contained within unreacted chelating
During agent, this chelating agen is contained in the eluent eluted in filter house.By this eluent and ormal weight
Suspending, therefore occurs because chelating agen and metal ion react in the mixed liquor that metal ion mixes and obtains
Can easily measure with or without chelating agen.Further, the concentration of the chelating agen in mixed liquor the biggest then mixed liquor
Turbidity also becomes the biggest, can easily measure with or without chelating agen in solution hence with above-mentioned quantitative system,
And this chelating agen can be carried out quantitatively.
In the quantitative approach of chelating agen involved in the present invention, add the metal ion of ormal weight in the solution
Measure the turbidity of solution afterwards, thus the chelating agen in solution is carried out quantitatively.
According to the quantitative approach of chelating agen involved in the present invention, mensuration is added with the turbid of the solution of metal ion
Degree.Owing to the chelating agen in solution and metal ion react so that suspending occurs in solution, therefore, it is possible to gently
Loose ground measures in solution with or without chelating agen.Further, the concentration of the chelating agen in solution is the biggest, is added with metal
The turbidity of the solution of ion also becomes the biggest, therefore easily can be entered chelating agen by above-mentioned quantitative approach
Row is quantitatively.
One can be provided can easily to measure in solution with or without chelating agen and can be to molten according to the present invention
Chelating agen in liquid carries out quantitative approach and the chelating agen quantitative system of quantitative chelating agen.
Accompanying drawing explanation
Fig. 1 is the schematic configuration of the chelating agen quantitative system involved by the 1st embodiment representing the present invention
Figure.
Fig. 2 is the flow chart of the quantitative approach for the chelating agen involved by the 1st embodiment is described.
Fig. 3 is the summary construction diagram representing the chelating agen quantitative system involved by the 2nd embodiment.
Fig. 4 is the curve chart of the result of expression table 1.
Fig. 5 is the curve chart of the result of expression table 2.
In figure: 1-chelating agen quantitative system, 2-filter house, 3-eluent receiving portion, 4-metal ion accommodates
Portion, 5-mixing unit, 6-determination part.
Detailed description of the invention
Hereinafter, with reference to accompanying drawing, preferred to the quantitative approach of the chelating agen of the present invention and chelating agen quantitative system
Embodiment illustrates.Implementation below is the example for the present invention is described, the present invention does not limit
In herein below.Further, accompanying drawing represents an example of embodiment, the mode of chelating agen quantitative system and structure
Ratio be not limited to accompanying drawing and laid down a definition.The present invention can be through being appropriately deformed in its teachings
Implement.It addition, in the following description, the symbol identical to identical or corresponding important document mark, and save
Slightly repeat specification.
(the 1st embodiment)
Fig. 1 is the schematic configuration of the chelating agen quantitative system involved by the 1st embodiment representing the present invention
Figure.Chelating agen quantitative system 1 shown in Fig. 1 is the chelating agen in solution to be carried out quantitative system, such as
For calculating the system of the concentration of this chelating agen.The chelating agen quantitative system 1 of the 1st embodiment is for as follows
Purposes: using the chelating agen residue to producing during by incinerated waste and waste gas (especially flying in waste gas
Ash) coal dust constitute burning ash carry out chelation treatment and the burning ash after chelation treatment be mixed in molten
In the case of in liquid, easily determine with or without eluted chelating agen (residual chelating agen) in this solution, and
Residual chelating agen is carried out quantitatively (such as, calculating the concentration of residual chelating agen).Here, so-called chelating
Process and refer to be formed not by making chelating agen react with the heavy metal (such as lead etc.) in above-mentioned burning ash
It is dissolved in or is insoluble in the process of sour etc. heavy metal complex, also referred to as heavy metal stabilization to process.At chelating
The chelating agen for example, aminodithioformic acid quasi-chelate compound etc. used in process.
As it is shown in figure 1, chelating agen quantitative system 1 possesses: filter house 2, from being dispersed with through chelation treatment
After burning ash liquid in remove this burning ash；Eluent receiving portion 3, accommodates after being filtered by filter house 2
Eluent；Metal ion receiving portion 4, accommodates metal ion；Mixing unit 5, in eluent receiving portion 3
Hybrid metal ion in interior eluent；And determination part 6, the turbidity of the mixed liquor in mensuration mixing unit 5.
Utilize chelating agen quantitative system 1 judge to remain chelating agen have that it's too late chelating agen carried out quantitative equipment excellent
Elect the size that the staff reclaiming the burning ash after chelation treatment can carry as (for example, can hold
Be contained in the size of handbag), in order to such as burn industrial waste burning facility in carry out chelation treatment it
After carry out above-mentioned judgement and quantitatively simply in the place reclaiming burning ash.Further, preferably at least filter house
2, eluent receiving portion 3 and mixing unit 5 can easy manual sizes for staff.
Filter house 2 is to filter the liquid (slurry) being dispersed with the burning ash after chelation treatment
Device, filter cloth 2 such as installs filtration film and structure in the way of the inner barrel of funnel apart from top to bottom etc.
Become.The cylinder of filter house 2 for example, cylinder, square tube body or taper cylinder etc., and by glass, plastics
Or resin makes.Filter paper that the filtration film of filter house 2 is for example, arranged in the way of zoning inner barrel or
MF (membrane filter) etc..In the 1st embodiment, the liquid constituting the slurry filtered by filter house 2 is
Water.It addition, the method removing burning ash from the slurry being dispersed with burning ash can also be the side beyond filtering
Method.For example, it is also possible to by slurry standing or centrifugation so that reclaiming supernatant after burning ash precipitation, by
This removes burning ash from above-mentioned slurry.At this time it is also possible to filter house 2 is called removing unit.
Eluent receiving portion 3 is to accommodate the device of the eluent after being filtered by filter house 2, and it is for example, by thoroughly
The cup-like containers that the glass of light or plastics are made.The peristome of this eluent receiving portion 3 can be and filter house
The sidewall of 2 or bottom surface are fitted together to and fix the shape of this filter house 2.Eluent receiving portion 3 can also have for
Prevent eluent leakage from sealing the cap of above-mentioned peristome.
Metal ion receiving portion 4 is to accommodate the device of solution containing metal ion, its for example, pipette or
Syringe etc..Metal ion for example, copper ion contained in solution in metal ion receiving portion 4, nickel from
Son, cobalt ion, silver ion or iron ion, this solution the most for example, copper-bath, nickel chloride solution,
Cobalt chloride solution, silver sulfate solution or ferric chloride solution.Gold from the solution making metal ion receiving portion 4
From the viewpoint of genus ion reacts with residual chelating agen and forms water-fast material (insoluble matter), preferably
Use copper ion or nickel ion.It addition, the metal ion in metal ion receiving portion 4 is adjusted to regulation
Amount.
Mixing unit 5 is the eluent obtained in eluent receiving portion 3 and is contained in metal ion receiving portion 4
They mixing are also formed the device of mixed liquor by the supply of solution, and it is for example, by glass or the plastics of printing opacity
The cup-like containers made.Mixing unit 5 can also possess agitator.
Determination part 6 is the device of the turbidity measuring the mixed liquor in mixing unit 5, and it possesses the most portable
Light source and light intensity determinator.Determination part 6 forms insoluble matter and the turbidity that produces for measuring in mixed liquor
Rise.Determination part 6 such as carries out the mensuration of turbidity by transmission light measurement or scattered light measuring.Transmission light
It is determined as following method: the light penetrated from light source is irradiated to mixed liquor, utilizes light intensity determinator to measure and led to
The intensity of the transmission light crossed, and obtain turbidity according to the calibration curve utilizing standard solution to make.Scattering flash ranging
It is set to following method；The light penetrated from light source is irradiated to mixed liquor, utilizes light intensity determinator to measure and be mixed
The intensity of the light of the KPT Scatter in liquid, and obtain turbidity according to the calibration curve utilizing standard solution to make.
The standard solution for example, Kaolin standard solution used in these assay methods or formal hydrazine standard solution.
It addition, when the solution in metal ion receiving portion 4 is coloring solution, can be with this coloring solution of measured in advance
Turbidity, and using the turbidity that measured as background (i.e., it is possible to the turbidity of measured in advance coloring solution, and
The turbidity of coloring solution is deducted) from the turbidity of mixed liquor.If it addition, the mensuration of the turbidity of transmission light measurement method
Width for example, 20 degree～500 degree, then the mensuration width for example, 0.01～1100NTU of scattered light measuring method
(20 degree～about 1000 degree).
There is the dependency relation that the turbidity of the biggest then mixed liquor of concentration of residual chelating agen is the biggest in mixed liquor, because of
Chelating agen in this mixed liquor is carried out quantitatively by this according to the turbidity of the mixed liquor obtained by determination part 6.
Quantitatively being carried out by quantitative portion (not shown) of chelating agen in this mixed liquor.This quantitative portion is permissible
It is contained in the determination part 6 of chelating agen quantitative system 1, it is also possible to be the device independent with this determination part 6.
And, it is also possible to by staff carry out in this mixed liquor residual chelating agen quantitative.For example, it is possible to
The corresponding table (scattergram) between the turbidity of mixed liquor and the concentration of chelating agen is utilized to carry out above-mentioned chelating agen
Quantitative, and the quantitative of above-mentioned chelating agen can also be carried out by other various methods.This profile sample
As being included in as electronic data in quantitative portion, it is also possible to be the available printed article of staff.
Then, with reference to Fig. 2, the chelating agen quantitative system 1 utilized involved by the 1st embodiment is carried out
The quantitative approach of chelating agen is described in detail.Fig. 2 is for the chelating involved by the 1st embodiment is described
The flow chart of the quantitative approach of agent.
First, use chelating agen that the burning ash produced when burning industrial waste is carried out chelation treatment.This chela
During conjunction processes, by making an addition in burning ash by chelating agen, make the heavy metal in this burning ash anti-with chelating agen
Should, so that this heavy metal insoluble (stabilisation).In order to save the examination of No. 13 methods of bulletin according to Japanese Environment
Testing and can reliably judge that heavy metal is the most insoluble, the addition of the chelating agen in above-mentioned chelation treatment is
The amount fully reacted with the heavy metal in burning ash.
Then, as the 1st step, the burning ash after chelation treatment is mixed in water (step S1).
In step sl, burning ash is mixed in water after the most such as by agitator be stirred (or by vibrate
Device vibrates), it is consequently formed the slurry that the burning ash after chelation treatment is dispersed in water.It addition,
Step S1 can be to use the pretreatment before above-mentioned chelating agen quantitative system 1, it is not necessary to must use this
Chelating agen quantitative system 1.
Then, as second step, extract from the slurry formed in step sl and eliminate burning ash
Eluent (step S2).In step s 2, make slurry be flowed on the filtration film of filter house 2, make
Constitute the liquid of slurry by this film, thus extract eluent out in eluent receiving portion 3.On the other hand,
The burning ash constituting slurry then residues on this film, thus removes burning ash from eluent.Filter house 2 is right
What slurry was carried out is filtered into natural filtration but it also may use pressure filtration or suction filtration.
Then, the metal ion of ormal weight is made an addition to (step in the eluent in eluent receiving portion 3
S3).In step s3, respectively by the eluent in eluent receiving portion 3 and be contained in metal ion
The solution of the metal ion containing ormal weight of receiving portion 4 adds mixing unit 5 to, thus forms mixed liquor.
In this mixed liquor, the chelating agen not reacted with heavy metal in chelation treatment reacts with metal ion, thus
Form water-fast metal complex.In step s3, if observing, mixed liquor is because of this metal complex
And occur suspending, then may determine that in mixed liquor containing unreacted chelating agen.It addition, in step S3
In, it is also possible to the eluent being added with metal ion is stirred and forms mixed liquor.Set in mixing unit 5
When being equipped with cap, it is possible to prevent mixed liquor to be splashed to outside when stirring, be therefore preferably provided with cap.
Then, the turbidity (step S4) of the mixed liquor in mensuration mixing unit 5.In step s 4, by surveying
Determine portion 6 and measure the turbidity of this mixed liquor, and according to this measurement result, the residual chelating agen in mixed liquor is carried out
Quantitatively.Residual chelating agen in mixed liquor can utilize the turbidity of the biggest then mixed liquor of concentration of residual chelating agen
The biggest dependency relation is carried out quantitatively.
According to the chelating agen quantitative system 1 involved by above-mentioned 1st embodiment, if slurry is contained within unreacted
Chelating agen, then in the eluent that this chelating agen elutes in being included in filter house 2.This eluent is mixed
The metal ion of ormal weight and the turbidity of mixed liquor that obtains, can enter with metal ion because of unreacted chelating agen
Row reacts and forms insoluble metal complex and steeply rise.Here, to mixed liquor adds ormal weight
Metal ion, therefore reacting completely to metal ion, the concentration of the chelating agen in mixed liquor is the biggest then
The turbidity of mixed liquor also becomes the biggest.That is, in mixed liquor, there is relevant closing in the concentration of chelating agen to turbidity
System.Utilize this dependency relation, can be easily to chela after measured the turbidity of mixed liquor by determination part 6
Mixture is carried out quantitatively.Further, if suspending occurs because of this metal complex in mixed liquor, then mixed liquor it is judged as
In containing unreacted chelating agen, it is possible to easily judge in mixed liquor with or without chelating agen.
Here, the point that the turbidity of mixed liquor can start steeply rise starts to comprise not in being not construed as slurry
The point of the chelating agen of reaction.Therefore, by measuring the flex point of this turbidity change, it is possible to easily obtain and carry out
The suitable addition of chelating agen during chelation treatment is (for measuring the inflection method of turbidity change, aftermentioned
Embodiment illustrates).
Additionally, in the present embodiment, metal ion is copper ion, and chelating agen is aminodithioformic acid
Quasi-chelate compound, therefore aminodithioformic acid quasi-chelate compound is easily combined with copper ion and is formed water-fast
Copper complex, and relatively low relative to the climbing of the solution turbidity of the amount of the chelating agen of residual in solution, because of
The concentration of the chelating agen under this measurable maximum turbidity uprises.Therefore, when using copper ion, in solution
Chelating agen can become big by quantification range.
Further, in the present embodiment, metal ion is nickel ion, and chelating agen is aminodithioformic acid
Quasi-chelate compound, therefore aminodithioformic acid quasi-chelate compound is easily combined with nickel ion and is formed water-fast
Nickel complex.The nickel complex being combined with nickel ion by aminodithioformic acid quasi-chelate compound and formed does not dissolves in
Water, and stably exist in solution.Therefore, when with the addition of nickel ion in the solution, it is possible to accurately survey
Determine the chelating agen having noresidue in solution.Further, when with the addition of nickel ion in the solution, due to relative to molten
In liquid, the climbing of solution turbidity of the amount of the chelating agen of residual is higher, therefore can not only accurately confirm be
No remain chelating agen, even and if remain the concentration of chelating agen small also be able to accurately it to be carried out fixed
Amount.
Further, due to utilize transmission light measurement method to measure the turbidity of solution, therefore with such as scattered light measuring
Sensing equipment etc. compare, it is possible to manufacture the sensing equipment used in transmission light measurement method with cheap price
And also it is capable of miniaturization.Thus, it is simple to mobile said determination equipment, also can beyond specific facilities
Enough turbidity easily measuring solution.
(the 2nd embodiment)
Hereinafter, to the chelating agen quantitative system involved by the 2nd embodiment and the chelating agen utilizing this system
Quantitative approach illustrates.In the explanation of the 2nd embodiment, omit interior with what the 1st embodiment repeated
Hold, and only record the part different from the 1st embodiment.That is, in the range of technology is allowed, permissible
The content of the 1st embodiment is suitably applied in the 2nd embodiment.
Fig. 3 is the summary construction diagram representing the chelating agen quantitative system involved by the 2nd embodiment.Such as Fig. 3
Shown in, compared with the chelating agen quantitative system 1 of the 1st embodiment, the chelating agen of the 2nd embodiment is quantitative
System 1A does not possess metal ion receiving portion 4 and mixing unit 5, and possesses mixing unit 5A and slurry containment portion
7。
Mixing unit 5A accommodates the solution of the metal ion containing ormal weight in advance, by accommodating from eluent
Portion 3 obtains the supply of eluent and forms mixed liquor.Therefore, with mixing unit 5 phase of the 1st embodiment
With, mixing unit 5A is also the device to the metal ion in eluent mixed solution.Further, due to by surveying
Determine portion 6 to measure the turbidity of the mixed liquor in mixing unit 5A, therefore identical with above-mentioned mixing unit 5, mixing
The cup-like containers that portion 5A is also made up of glass or the plastics of printing opacity.
Slurry containment portion 7 is the device (receiving portion) accommodating slurry, its appearance being for example, made of plastics
Device.Owing to forming slurry, therefore in slurry containment portion 7 by the dispersion of the burning ash in raising liquid
Multiple abrading-balls that such as burning ash is pulverized can be accommodated.Now, slurry containment portion 7 possesses and is utilizing abrading-ball
The lid that liquid flows out is prevented when pulverizing burning ash to improve its dispersion.And, it is possible to use poking bar
Etc. the dispersion of the burning ash improved in liquid, thus replace abrading-ball.
Then, to the chelating agen utilizing the chelating agen quantitative system 1A involved by the 2nd embodiment to carry out
Quantitative approach is described in detail.The quantitative approach of the chelating agen of the 2nd embodiment has and the 1st embodiment party
Step S1 of the quantitative approach of formula～the identical step of S4.Therefore, following with Fig. 2 to the 2nd embodiment party
The quantitative approach of the chelating agen of formula illustrates.
First, in step S1 of the 2nd embodiment, the water in slurry containment portion 7 is mixed into burning
Then multiple abrading-balls are put into slurry containment portion 7 by ash.Then, this slurry containment portion 7 is sealed with lid
Afterwards, slurry containment portion 7 is made to vibrate tens seconds～a few minutes.Thus, burning after chelation treatment is formed
The slurry that ashing is dispersed in water.
Then, identical with step S2 of the 1st embodiment, in step S2 of the 2nd embodiment, from
The slurry formed in step sl extracts the eluent eliminating burning ash.
Then, in step S3 of the 2nd embodiment, by by the eluent in eluent receiving portion 3
Add mixing unit 5A to, make the metal ion of ormal weight add to and this eluent generates mixed liquor.At this
In step S3, preferably make this mixing unit 5A vibrate after sealing mixing unit 5A, thus stir mixing
Liquid.
Then, identical with step S4 of the 1st embodiment, in step S4 of the 2nd embodiment, logical
Cross determination part 6 and measure the turbidity of mixed liquor, and according to this measurement result, the residual chelating agen in mixed liquor is entered
Row is quantitatively.
According to the chelating agen quantitative system 1A involved by the 2nd embodiment discussed above, it is also possible to obtain
The action effect identical with the 1st embodiment.
It addition, above, the preferred embodiment of the present invention is illustrated, but on the present invention is not limited to
State embodiment.Such as, in the 1st embodiment, filter house 2 in chelating agen quantitative system 1, wash
De-liquid receiving portion 3, metal ion receiving portion 4, mixing unit 5 and determination part 6 are respectively independent device,
But the device that such as filter house 2 and eluent receiving portion 3 can be formed as one, it is also possible to by eluent
The device that receiving portion 3 and mixing unit 5 form as one, it is also possible to by eluent receiving portion 3, mixing unit 5
And the device that determination part 6 forms as one, the dress that mixing unit 5 and determination part 6 can be formed as one again
Put.Further, chelating agen quantitative system 1 can also possess for burning ash complete for chelation treatment is mixed into water
In and form the portion that is mixed into (being equivalent to the slurry containment portion 7 of the 2nd embodiment) of slurry.Further, entering
Burning ash can also be carried out cured before row chelation treatment.Now, noresidue is had to chelate by mensuration
Agent, it is possible to easily judge whether to be sufficiently carried out cured.And, by residual chelating agen is entered
Row is quantitatively, it is possible to speculate the amount carrying out material required during cured.
In the 2nd embodiment, it is possible to use agitator or agitator carry out burning in dispersed paste receiving portion 7
Ashing.Further, filter house 2 and eluent receiving portion 3 can be the devices of one, or eluent accommodates
Portion 3 and mixing unit 5A can be the devices of one, or mixing unit 5A and determination part 6 can be one
Device.
Further, in the 1st embodiment and the 2nd embodiment, eluent receiving portion 3 can also be via
Filter house 2 extracts pipette or the syringe etc. of eluent from slurry.Now, filter house 2 can also be
Releasably it is installed on the filter of eluent receiving portion 3.Thus, in eluent receiving portion 3 from slurry
When extracting eluent, filter house 2 is installed on eluent receiving portion 3.Further, from eluent receiving portion
3, when mixing unit 5,5A add eluent, unload filter house 2 from eluent receiving portion 3.
Further, in the 1st embodiment and the 2nd embodiment, the chela that chelating agen quantitative system is carried out is utilized
The quantitative approach of mixture can be performed fully automatic, or can automatically carry out a portion, or all right
All by manually carrying out.I.e., it is possible to carried out portion or all of above-mentioned chelating agen by staff
Quantitative approach, it is also possible to automatically carried out the quantitative square of portion or all of above-mentioned chelating agen by arithmetical unit etc.
Method.
Further, in the 1st embodiment and the 2nd embodiment, utilize chelating agen quantitative system to measure and burn
While ash (especially flying dust) has noresidue chelating agen, chelating agen is carried out quantitatively, but the present invention does not limit
In this.Such as, as the measuring object beyond burning ash, can implement to utilize this to contaminated soil
The quantitative approach of the chelating agen of bright involved chelating agen quantitative system.When soil is the most contaminated by heavy metals
In the case of, need that this soil is implemented heavy metal inclosure and process (being equivalent to the harmless treatment of burning ash).
By utilizing chelating agen involved in the present invention quantitative in soil after implementing this heavy metal inclosure process
The chelating agen quantitative approach of system, it is possible to be easily confirmed whether that implementing inclosure fully processes.And,
When inclosure processes not fully, it is possible to speculate the pharmaceutical quantities etc. that should supplement interpolation further.If it addition,
Heavy metal inclosure employs chelating agen in processing, then this heavy metal inclosure can be processed and be considered as chelation treatment.
Further, the most contaminated by heavy metals in order to investigate soil, it is also possible to enforcement utilizes involved in the present invention
The quantitative approach of the chelating agen of chelating agen quantitative system.That is, measuring object can also be that heavy metal is not carried out
The soil of inclosure process etc..Now, the i.e. soil of measuring object is implemented to add the chelating of appropriate chelating agen
After process, residual chelating agen is carried out quantitatively.Thereby, it is possible to speculate the heavy metal pollution journey to soil
Degree, it is possible to easily judge whether that needing to implement heavy metal inclosure processes.
Embodiment
Then, utilize following example that the present invention is described in more detail, but the present invention is not limited to these
Example.
(embodiment 1)
After reclaiming the flying dust produced when burning industrial waste, add in this flying dust the chelating agen of normal concentration with
Carry out chelation treatment.Chelating agen employs the TS-300 piperazines chelating that TOSOH Co., Ltd of Japan manufactures
Agent.10g flying dust after chelation treatment is mixed in 100ml water (purification water) and stirs with agitator
Mix 5 minutes, then utilize funnel and filter paper to filter the water being dispersed with flying dust.Filter paper employs ADVANTEC
The qualitative analysis No.101 that TOYO Co., Ltd manufacture.The filtrate extracted by filtration adds
The copper sulfate solution 0.12ml of 0.02mol/L also mixes, thus makes mensuration sample.
Made mensuration sample is determined by the transmission light measurement method employing formal hydrazine standard solution
Turbidity.In this transmission light measurement, employ LED as light source, employ strain formula meeting as scopometer
The digital haze meter 500G that She Gongli RIKEN manufactures.Further, turbidimetric mensuration wavelength is set to
660nm, is set as 20～500 degree by the measurement range of turbidity.About turbidity, as standard substance by 1mg
Formal hydrazine make an addition to the turbidity purifying water the suspension after making it dispersed of 1L and be set to 1 degree.
The measurement result measuring sample of embodiment 1 is shown in table 1.It addition, when turbidity is less than 20, will chelating
The concentration of agent is set to 0, when turbidity is more than 500, is set to measure chelating agen by the concentration of chelating agen
Concentration.
[table 1]
| The addition (wt%) of chelating agen | 0 | 5 | 6 | 7 | 8 | 9 |
| Turbidity (is spent) | Less than 20 | 30 | 40 | 165 | 450 | More than 500 |
| The concentration (mg/L) of chelating agen | 0 | 1 | 2 | 430 | 1160 | - |
Fig. 4 is the curve chart of the result of expression table 1.In the diagram, transverse axis represents the addition of chelating agen,
The longitudinal axis in left side represents turbidity, and the longitudinal axis on right side represents the concentration of the chelating agen measured in sample.In Fig. 4
Triangle 11a～11e is the concentration of chelating agen, and rhombus 12a～12e in Fig. 4 is the turbid of mensuration sample
Degree.As shown in table 1, when the addition of chelating agen is 0wt%～6wt%, turbidity is almost unchanged.Therefore,
The gradient of the straight line 13 linking rhombus 12b, 12c in Fig. 4 is minimum.It is to be understood that chelate
The chelating agen added during process fully reacts with the heavy metal in flying dust so that in mensuration sample completely or nearly
Not containing chelating agen, the metal ion (copper ion) therefore measured in sample does not reacts with chelating agen, non-shape
Become water-fast material.
By contrast, as shown in table 1, when the addition of chelating agen is 7wt%～8wt%, turbidity is drastically gone up
Rise.Therefore, compared with the gradient of straight line 13, Fig. 4 links the straight line 14 of rhombus 12d, 12e
Gradient becomes very large.It is to be understood that carry out with the addition of during chelation treatment the chelating agen of excess, lead
Causing to measure containing the chelating agen remained in sample, the copper ion therefore measured in sample reacts with residual chelating agen
And forming water-fast material (copper complex) so that the turbidity measuring sample steeply rises.Owing to surveying
Containing the copper ion being adjusted to ormal weight in random sample product, the most copper complex formazan formation amount is because of residual chelating agen
Concentration and change.That is, the concentration of residual chelating agen determines to measure the variable quantity of the turbidity of sample.Thus
Understand, between the turbidity of sample and the concentration of residual chelating agen, there is dependency relation measuring.
The intersection point 15 of straight line 13 and straight line 14 is equivalent to the point that the copper complex in mixed liquor initially forms.
That is, the point that the heavy metal during intersection point 15 is equivalent to the flying dust in chelation treatment and chelating agen react just.
In other words, intersection point 15 is to represent the point for judging to measure in sample the threshold value with or without chelating agen, is straight line
13 and the flex point of straight line 14.Therefore, in embodiment 1, by obtaining above-mentioned straight line 13 and straight line
14, it is possible to easily obtain the suitable addition i.e. intersection point 15 of chelating agen in chelation treatment.
(embodiment 2)
Here, employ the M-1 dithio manufactured by Miyoshi Oil&FatCo., Ltd as chelating agen
Carbamic acid quasi-chelate compound, is diluted to 5 times by the filtrate extracted by filtration, in the filtrate of dilution
Add the nickel chloride aqueous solution 0.6ml of 0.04mol/L and mix, thus having made mensuration sample.Remove
Outside this, make mensuration sample in the same manner as in Example 1.And, with same as in Example 1
Mode determine the turbidity of this mensuration sample.The measurement result measuring sample of embodiment 2 is shown in table 2.
[table 2]
| The addition (wt%) of chelating agen | 0 | 5 | 6 | 7 | 8 | 9 |
| Turbidity (is spent) | 50 | 55 | 65 | 90 | 180 | 275 |
| The concentration (mg/L) of chelating agen | 0 | 2 | 3 | 41 | 170 | 280 |
Fig. 5 is the curve chart of the result of expression table 2.In Figure 5, transverse axis represents the addition of chelating agen,
The longitudinal axis in left side represents turbidity, and the longitudinal axis on right side represents the concentration of the chelating agen measured in sample.In Fig. 5
Triangle 21a～21f is the concentration of chelating agen, and rhombus 22a～22f in Fig. 5 is the turbid of mensuration sample
Degree.As shown in table 2, when the addition of chelating agen is 0wt%～6wt%, turbidity is almost unchanged.Therefore,
The gradient of the straight line 23 linking rhombus 22b, 22c in Fig. 5 is minimum.It is to be understood that as implemented
In example 1 as explanation, carry out the chelating agen of interpolation during chelation treatment the most anti-with the heavy metal in flying dust
Should so that measure in sample and completely or nearly do not contain chelating agen.
By contrast, as shown in table 2, when the addition of chelating agen is 7wt%～9wt%, turbidity is significantly gone up
Rise.Therefore, compared with the gradient of straight line 23, Fig. 5 links the straight line 24 of rhombus 22d～22f
Gradient becomes big.It is to be understood that as described in Example 1, measure nickel in sample from
Son reacts with residual chelating agen and defines water-fast material (nickel complex).Owing to measuring in sample
Containing the nickel ion being adjusted to ormal weight, therefore the formation amount of nickel complex is sent out because the concentration of residual chelating agen
Changing.It follows that in example 2, the turbidity with residual chelating agen measuring sample concentration it
Between there is also dependency relation.It addition, in example 2, relative to the solution turbidity of the amount of residual chelating agen
Climbing more than embodiment 1.
The intersection point 25 of straight line 23 and straight line 24 is equivalent to the point that the nickel complex in mixed liquor initially forms.
That is, the point that the heavy metal during intersection point 25 is equivalent to the flying dust in chelation treatment and chelating agen react just.
Therefore, in example 2, it is also possible to easily obtain chela by obtaining above-mentioned straight line 23 and straight line 24
The suitable addition i.e. intersection point 25 of the chelating agen in conjunction process.
Claims (8)
1. the quantitative approach of a chelating agen, it is characterised in that possess following operation:
Measuring object after chelation treatment is mixed in water, then removes this measuring object, thus
Form solution；
The metal ion of ormal weight is added in described solution；And
Measure the turbidity of the described solution being added with described metal ion, and accordingly to the chelating in described solution
Agent is carried out quantitatively.
2. the quantitative approach of a chelating agen, it is characterised in that possess following operation:
Burning ash after chelation treatment is mixed in water, then removes this burning ash, thus formed molten
Liquid；
The metal ion of ormal weight is added in described solution；And
Measure the turbidity of the described solution being added with described metal ion, and accordingly to the chelating in described solution
Agent is carried out quantitatively.
The quantitative approach of chelating agen the most according to claim 1 and 2, it is characterised in that
Described metal ion is copper ion, and described chelating agen is aminodithioformic acid quasi-chelate compound.
The quantitative approach of chelating agen the most according to claim 1 and 2, it is characterised in that
Described metal ion is nickel ion, and described chelating agen is aminodithioformic acid quasi-chelate compound.
The quantitative approach of chelating agen the most according to any one of claim 1 to 4, its feature exists
In,
The turbidity of described solution is measured by transmission light measurement method.
6. a chelating agen quantitative system, it is characterised in that possess:
Filter house, filters slurry, is dispersed with measuring object, described mensuration object in described slurry
Containing the heavy metal using chelating agen to carry out insoluble process in thing；
Mixing unit, the metal ion that in the eluent eluted in described filter house, hybrid regulatory is quantitative；
Determination part, measures the turbidity of the mixed liquor mixed by described eluent and obtain with described metal ion；
And
Quantitatively portion, according to the turbidity of the described mixed liquor that described determination part is obtained, in described mixed liquor
Chelating agen is carried out quantitatively.
7. a chelating agen quantitative system, it is characterised in that possess:
Filter house, filters slurry, is dispersed with burning ash, contains in described burning ash in described slurry
Chelating agen is used to carry out the heavy metal of insoluble process；
Mixing unit, the metal ion that in the eluent eluted in described filter house, hybrid regulatory is quantitative；
Determination part, measures the turbidity of the mixed liquor mixed by described eluent and obtain with described metal ion；
And
Quantitatively portion, according to the turbidity of the described mixed liquor that described determination part is obtained, in described mixed liquor
Chelating agen is carried out quantitatively.
8. the quantitative approach of a chelating agen, it is characterised in that
The turbidity of described solution is measured after adding the metal ion of ormal weight in the solution, thus to described molten
Chelating agen in liquid is carried out quantitatively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015062411 | 2015-03-25 | ||
| JP2015-062411 | 2015-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106018281A true CN106018281A (en) | 2016-10-12 |
Family
ID=57080956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610173656.2A Pending CN106018281A (en) | 2015-03-25 | 2016-03-23 | Quantitative method and quantitative system of chelating agent |
Country Status (2)
| Country | Link |
|---|---|
| JP (2) | JP6765200B2 (en) |
| CN (1) | CN106018281A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756372A (en) * | 2020-12-19 | 2021-05-07 | 宁波明州环境能源有限公司 | Method for judging addition of chelating agent in fly ash stabilization process |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7164792B2 (en) * | 2018-04-25 | 2022-11-02 | 壯太郎 樋口 | Method for measuring chelating agents |
| JP6847082B2 (en) * | 2018-09-10 | 2021-03-24 | 大成建設株式会社 | In-situ insolubilization method |
| CN109971793A (en) * | 2019-03-12 | 2019-07-05 | 南京通用电气装备有限公司 | A kind of anaerobic gas generation promotor of low cost and preparation method thereof and application method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466620A (en) * | 2010-11-01 | 2012-05-23 | 袁俊海 | Method for measuring influence of addition amount of heavy metal chelator to iron ion clearance |
| CN102466617A (en) * | 2010-11-01 | 2012-05-23 | 袁俊海 | Method for measuring influence of heavy metal chelant on removal rate of metal mixed solutions |
| CN103512930A (en) * | 2012-06-18 | 2014-01-15 | 栗田工業株式会社 | Method for determining adding amount of organic chelate heavy metal fixing agent |
| CN104211957A (en) * | 2014-08-28 | 2014-12-17 | 中山市宏科化工有限公司 | Nano-silicon dioxide-modified fly ash metal ion chelator and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4599913B2 (en) * | 2004-05-17 | 2010-12-15 | 東ソー株式会社 | Method for determining required addition amount of heavy metal treating agent and apparatus used therefor |
| JP4784309B2 (en) * | 2006-01-10 | 2011-10-05 | 東ソー株式会社 | Judgment method of heavy metal fixation effect |
| PL2040837T3 (en) * | 2006-07-04 | 2012-11-30 | Gaston Glock | Method for the removal of heavy metals |
| JP5150853B2 (en) * | 2008-03-19 | 2013-02-27 | オリエンタル技研工業株式会社 | Method and apparatus for determining the appropriate amount of fixative for immobilizing heavy metals in incineration fly ash |
| JP5728983B2 (en) * | 2011-02-04 | 2015-06-03 | 栗田工業株式会社 | Chemical injection control method for heavy metal scavengers |
| JP2015000376A (en) * | 2013-06-14 | 2015-01-05 | 東ソー株式会社 | Requirement determination apparatus for heavy-metal processing agent |
| JP5962722B2 (en) * | 2014-08-29 | 2016-08-03 | 栗田工業株式会社 | Chelating agent addition amount determination device and chelating agent addition amount determination method |
-
2016
- 2016-03-10 JP JP2016047212A patent/JP6765200B2/en active Active
- 2016-03-23 CN CN201610173656.2A patent/CN106018281A/en active Pending
-
2020
- 2020-05-08 JP JP2020082660A patent/JP6845956B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466620A (en) * | 2010-11-01 | 2012-05-23 | 袁俊海 | Method for measuring influence of addition amount of heavy metal chelator to iron ion clearance |
| CN102466617A (en) * | 2010-11-01 | 2012-05-23 | 袁俊海 | Method for measuring influence of heavy metal chelant on removal rate of metal mixed solutions |
| CN103512930A (en) * | 2012-06-18 | 2014-01-15 | 栗田工業株式会社 | Method for determining adding amount of organic chelate heavy metal fixing agent |
| CN104211957A (en) * | 2014-08-28 | 2014-12-17 | 中山市宏科化工有限公司 | Nano-silicon dioxide-modified fly ash metal ion chelator and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘立华等: "两性高分子重金属螯合絮凝剂的合成及其对Cu(Ⅱ)的去除性能", 《环境工程学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756372A (en) * | 2020-12-19 | 2021-05-07 | 宁波明州环境能源有限公司 | Method for judging addition of chelating agent in fly ash stabilization process |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6845956B2 (en) | 2021-03-24 |
| JP2020139957A (en) | 2020-09-03 |
| JP2016183960A (en) | 2016-10-20 |
| JP6765200B2 (en) | 2020-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106018281A (en) | Quantitative method and quantitative system of chelating agent | |
| JP5150853B2 (en) | Method and apparatus for determining the appropriate amount of fixative for immobilizing heavy metals in incineration fly ash | |
| Štrok et al. | Development of pre-concentration procedure for the determination of Hg isotope ratios in seawater samples | |
| CN106488808B (en) | Chelating agent addition determining device and chelating agent addition determine method | |
| CN104048964B (en) | Full-automatic water quality analysis-e/or determining total phosphorus and orthophosphate test kit make and usage | |
| CN104280509A (en) | Device and method for detecting total cyanide and sulfide in water solution by employing direct conversion | |
| DE102011007011A1 (en) | Analyzer for the automated determination of a measured variable of a liquid sample | |
| JP2008184469A (en) | Mixture composition and method for treating heavy metal therewith | |
| CN103994994A (en) | Method for analyzing silicon in ferro-vanadium | |
| CN104849400B (en) | Novel method for measuring content of zinc in alkaline zinc-nickel alloy plating solution | |
| CN101413897B (en) | Method and reagent kit for detecting nitrite shield reagent in milk | |
| CN107238585A (en) | The quantitative approach and chelating agent quantitative system of chelating agent | |
| CN111650139A (en) | Thiocyanate determination method for removing hydrogen peroxide interference | |
| CN106404769B (en) | The device for fast detecting of heavy metal arsenic | |
| CN102914511A (en) | Quantitative detecting method for polyacrylamide in composite/mixture | |
| CN104101573A (en) | Method for measuring niobium content in iron steel through beryllium hydroxide separating sulfochlorophenol S spectrophotometric method | |
| CN113289306A (en) | Treatment method of waste residue containing arsenic sulfide | |
| CN106115909B (en) | Method for judging whether chemical agent is put into production and used to influence normal operation of sewage anaerobic treatment system or not and anaerobic reaction device | |
| JPH10337550A (en) | Method for determining proper adding amount of heavy metal stabilizer and chemical treatment method for waste | |
| CN105293753B (en) | A kind of processing method of argentiferous, arsenic waste solution processing unit | |
| Drikas et al. | Spectrophotometric method for the determination of total cyanide in wastewater samples | |
| CN112997076B (en) | Digestion of lead (0) and subsequent colorimetric detection of lead (II) | |
| Topuz et al. | Simultaneous preconcentration and determination of Cu (II), Ni (II), and Co (II) in food and environmental samples by the application of chelate adsorption on amberlite XAD-1180 | |
| CN103185701A (en) | Method for measuring content of nickel in low nickel iron | |
| Ensafi et al. | Spectrophotometric reaction-rate method for the determination of sulfide by catalytic action on the oxidation of sodium azide by iodine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170808 Address after: Tokyo, Japan, Japan Applicant after: Sumitomo Heavy Industries Environment Corp. Address before: Tokyo, Japan, Japan Applicant before: Sumiju Environmental engineering Technology Co., ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |
|
| RJ01 | Rejection of invention patent application after publication |