CN104677900B - A kind of method of chlorine dioxide content in quick detection water for eliminating reagent blank influence - Google Patents
A kind of method of chlorine dioxide content in quick detection water for eliminating reagent blank influence Download PDFInfo
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- CN104677900B CN104677900B CN201510090771.9A CN201510090771A CN104677900B CN 104677900 B CN104677900 B CN 104677900B CN 201510090771 A CN201510090771 A CN 201510090771A CN 104677900 B CN104677900 B CN 104677900B
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Abstract
The invention discloses a kind of method of chlorine dioxide content in quick detection water for eliminating reagent blank influence, this method prepares liquid-type chlorine dioxide detection reagent first, the chlorine dioxide standard color card for deducting reagent blank is made of water white transparency PVC plastic flitch again, chlorine dioxide standard color card is placed in blank bottom of the tube during test, the chlorine dioxide concentration corresponding to standard color card during with sample cell solid colour is read, chlorine dioxide concentration in water sample is obtained.Chlorine dioxide concentration detection is carried out by the method, influence of the reagent blank to testing result can be eliminated, be particularly suitable for chlorine dioxide field quick detection in water.
Description
Technical field
The present invention relates to the present invention relates to field of water quality detection, more particularly to a kind of eliminate the quick of reagent blank influence
The method for detecting chlorine dioxide content in water.
Background technology
Chlorine dioxide（ClO2）Be at present in the world generally acknowledged the efficient of latest generation, wide spectrum, safety it is sterilized, fresh-keeping
Agent, is the optimal substitute of chlorinated product, has been widely used in World Developed Countries.Use the life of chlorine dioxide treatment
Drinking water living will not produce generally the teratogenesis being also easy to produce during with chlorine-containing disinfectants such as sodium hypochlorite, mutagens, carcinogenic chloroform,
But skin is contacted or solution of the intake containing high concentration of chlorine dioxide, may still cause intense stimulus and corrosiveness.
In water more than the detection of chlorine dioxide using directly develop the color AAS, Fading spectrophotometry, fluorimetry,
Chemical titration, chromatography, electrochemical method, plasma resonance scattering method, these methods are both needed to take back water sample special
Laboratory, is chemically examined by the operating technology personnel of specialty and completed, most of method also needs to the high large-scale instrumentation of price, no
Quick, easy Site Detection requirement can be met, some special when and wheres also exist sampling not in time, can not be objective anti-
Reflect the situation of sampling location Water quality.
Existing chlorine dioxide Site Detection reagent is the dry-type detection reagent based on colorimetric method in the market,
The detection reagent takes a certain amount of water sample mix, dissolve with dry-type detection reagent when measuring, react a period of time after
Specific color is produced, the concentration for drawing water sample test substance is directly compareed with standard color card.Such method is quick, conveniently, it is public
Many participations are high, but can not eliminate influence of the change to measurement result of reagent blank during measurement, only constant in reagent blank
Just there is higher accuracy when constant.But, actually detected to find, the either detection reagent of liquid-type or dry-type,
All inevitably there is a situation where that reagent blank becomes larger or diminished in storing process.In addition, using the inspection of dry-type
Test agent when carrying out water sample detection, it is necessary to first detection reagent is fully dissolved with water sample to be measured, then with the specific pollution in water sample
Thing carries out reaction and produces particular color.Because the TWS that Various Seasonal, different zones are gathered is not quite similar, dry-type is dissolved
Also it is not quite similar the time required to during detection reagent, effectively control is difficult to the time required to whole detection process, also to testing result
Accuracy is adversely affected.
Therefore, demand one kind uses liquid-type detection reagent, can eliminate reagent blank on testing result influence, using standard
The detection method of chlorine dioxide in the quantitative water of the direct visual colorimetric determination of colour atla, for realizing chlorine dioxide field quick detection in water
It is particularly important.
The content of the invention
It is an object of the invention to：In view of the shortcomings of the prior art, reagent blank shadow can be eliminated the invention provides one kind
The method of chlorine dioxide content in loud quick detection water.
For achieving the above object, the present invention uses following scheme：A kind of quick inspection for eliminating reagent blank influence
The method for surveying chlorine dioxide content in water, it is characterised in that methods described comprises the following steps：
（1）The preparation of liquid-type chlorine dioxide detection reagent, the liquid-type chlorine dioxide detection reagent presses the amount of material
Following components and deionized water are configured to solution by concentration,
（N, N- diethyl -1,4- phenylenediamines）Sulfate 0.19-0.38 mmol/L
Glycine 0.267-0.675 mol/L
Disodium ethylene diamine tetraacetate 2.69-5.38 mmol/L
Ethylene glycol 0.36-0.90 mol/L
PH6.50 phosphate buffer 30-80 mmol/L；
（2）The preparation of the chlorine dioxide standard color card after reagent blank is deducted, at least 4 colorimetric cylinders, optional 1 colorimetric are taken
Manage as blank tube, remaining colorimetric cylinder is first to add in standard pipe, blank tube first to add concentration in deionized water, each standard pipe in ladder
The chlorine dioxide standard spent the deionized water added in the chlorine dioxide standard liquid of change, blank tube and added in standard pipe is molten
Liquid product is identical, the step of adding same volume in all colorimetric cylinders（1）Obtained liquid-type chlorine dioxide detection reagent, reaction
No longer change to color, it is in color to be shot by colorimetric cylinder bottom up in each colorimetric cylinder, with mapping software by each standard pipe face
Color deducts blank tube color, then the concentration of the color of gained and corresponding chlorine dioxide standard liquid is printed upon into water white transparency plate
On；
（3）The detection of water sample to be measured, while taking at least 2 colorimetric cylinders, optional 1 colorimetric cylinder is blank tube, remaining colorimetric
Manage as sample cell, the deionization for first adding and being added in water sample to be measured, blank tube in deionized water, sample cell is first added in blank tube
Water is identical with the volume of water sample to be measured added in sample cell, the step of adding same volume in all colorimetric cylinders（1）Obtained liquid
Build chlorine dioxide detection reagent, reaction no longer changes to color, then by step（2）Made standard color card is placed in blank tube
The overlay color of bottom, observation blank tube and chlorine dioxide standard color card, reads and sample cell color most close overlay color
Corresponding chlorine dioxide concentration.
It is used as the preferred scheme of the present invention, step（1）In liquid-type chlorine dioxide detection reagent press substance withdrawl syndrome
Following components and deionized water are configured to solution,
（N, N- diethyl -1,4- phenylenediamines）Sulfate 0.26-0.31 mmol/L
Glycine 0.37-0.57 mol/L
Disodium ethylene diamine tetraacetate 3.74-4.34 mmol/L
Ethylene glycol 0.53-0.73 mol/L
PH6.50 phosphate buffer 40-65 mmol/L.
It is used as present invention further optimization, step（1）In liquid-type chlorine dioxide detection reagent by material amount it is dense
Following components and deionized water are configured to solution by degree,
（N, N- diethyl -1,4- phenylenediamines）The mmol/L of sulfate 0.28
The mol/L of glycine 0.471
The mmol/L of disodium ethylene diamine tetraacetate 4.04
The mol/L of ethylene glycol 0.63
The mmol/L of pH6.50 phosphate buffers 50.
It is used as the preferred scheme of the present invention, step（2）In take 7 colorimetric cylinders, an optional colorimetric cylinder is blank tube, remaining
Sequentially added in the six roots of sensation colorimetric cylinder concentration for 0.05mg/L, 0.10mg/L, 0.20mg/L, 0.30mg/L, 0.50mg/L,
0.80mg/L chlorine dioxide standard liquid.
As the preferred scheme of the present invention, water white transparency plate is the water white transparency PVC plastic flitch that thickness is 1-2mm.
The positive effect of the present invention is as follows：
The method of chlorine dioxide content has method letter in the quick detection water for eliminating reagent blank influence of the present invention
High, the easily operated advantage of single, accuracy；Detected, can effectively be controlled whole using liquid-type chlorine dioxide detection reagent
The time required to detection process；By the side that blank tube color addition is carried out to colorimetric control with sample cell again on standard color card
Method, can effectively eliminate influence of the reagent blank to testing result, be particularly suitable for chlorine dioxide field quick detection in water.
Embodiment
Embodiment 1
（1）The preparation of liquid-type chlorine dioxide detection reagent, the liquid-type chlorine dioxide detection reagent presses the amount of material
Following components and deionized water are configured to solution by concentration,
（N, N- diethyl -1,4- phenylenediamines）The mmol/L of sulfate 0.19
The mol/L of glycine 0.267
The mmol/L of disodium ethylene diamine tetraacetate 2.69
The mol/L of ethylene glycol 0.36
The mmol/L of pH6.50 phosphate buffers 30；
（2）The preparation of the chlorine dioxide standard color card after reagent blank is deducted, 7 10ml glass colorimetric cylinders are taken, the 1st is set
Root colorimetric cylinder is that blank tube, 2-7 root colorimetric cylinders are standard pipe, adds 10ml deionized waters in blank tube and standard pipe respectively
With the chlorine dioxide mark that 10ml concentration is 0.05mg/L, 0.10mg/L, 0.20mg/L, 0.30mg/L, 0.50mg/L, 0.80mg/L
Quasi- solution, adds step（1）Described liquid-type chlorine dioxide detection reagent 0.2ml, reacts to color and no longer becomes at room temperature
Change, as the color produced by colorimetric cylinder bottom up shoots each tube reaction, with mapping software photoshop7.0 by each standard pipe
Color is deducted after blank tube color, and the concentration of the color of gained and corresponding chlorine dioxide standard liquid is printed upon into thickness is
On 1mm water white transparency PVC plastic flitch；
（3）Take 2 10ml glass colorimetric cylinders, it is that blank tube, the 2nd colorimetric cylinder are sample cell to set the 1st colorimetric cylinder, point
10ml deionized waters and 10ml water samples to be measured are not added in blank tube and sample cell, step is added（1）Described in liquid
Type chlorine dioxide detection reagent, reacts to color and no longer changes at room temperature, by step（2）Described standard color card is placed in this step
In blank bottom of the tube, by blank tube bottom up observe blank tube be superimposed with standard color card after color, and with sample cell face
Color is compareed, when both solid colours, is read and the chlorine dioxide concentration corresponding to sample cell color most close overlay color.
Embodiment 2
（1）The preparation of liquid-type chlorine dioxide detection reagent, the liquid-type chlorine dioxide detection reagent presses the amount of material
Following components and deionized water are configured to solution by concentration,
（N, N- diethyl -1,4- phenylenediamines）The mmol/L of sulfate 0.28
The mol/L of glycine 0.471
The mmol/L of disodium ethylene diamine tetraacetate 4.04
The mol/L of ethylene glycol 0.63
The mmol/L of pH6.50 phosphate buffers 50；
（2）The preparation of the chlorine dioxide standard color card after reagent blank is deducted, 7 10ml glass colorimetric cylinders are taken, the 1st is set
Root colorimetric cylinder is that blank tube, 2-7 root colorimetric cylinders are standard pipe, adds 10ml deionized waters in blank tube and standard pipe respectively
With the chlorine dioxide mark that 10ml concentration is 0.05mg/L, 0.10mg/L, 0.20mg/L, 0.30mg/L, 0.50mg/L, 0.80mg/L
Quasi- solution, adds step（1）Described liquid-type chlorine dioxide detection reagent 0.2ml, reacts to color and no longer becomes at room temperature
Change, as the color produced by colorimetric cylinder bottom up shoots each tube reaction, with mapping software photoshop7.0 by each standard pipe
Color is deducted after blank tube color, and the concentration of the color of gained and corresponding chlorine dioxide standard liquid is printed upon into thickness is
On 1mm water white transparency PVC plastic flitch；
（3）Take 2 10ml glass colorimetric cylinders, it is that blank tube, the 2nd colorimetric cylinder are sample cell to set the 1st colorimetric cylinder, point
10ml deionized waters and 10ml water samples to be measured are not added in blank tube and sample cell, step is added（1）Described in liquid
Type chlorine dioxide detection reagent, reacts to color and no longer changes at room temperature, by step（2）Described standard color card is placed in this step
In blank bottom of the tube, by blank tube bottom up observe blank tube be superimposed with standard color card after color, and with sample cell face
Color is compareed, when both solid colours, is read and the chlorine dioxide concentration corresponding to sample cell color most close overlay color.
Embodiment 3
（1）The preparation of liquid-type chlorine dioxide detection reagent, the liquid-type chlorine dioxide detection reagent presses the amount of material
Following components and deionized water are configured to solution by concentration,
（N, N- diethyl -1,4- phenylenediamines）The mmol/L of sulfate 0.38
The mol/L of glycine 0.675
The mmol/L of disodium ethylene diamine tetraacetate 4.04
The mol/L of ethylene glycol 0.90
The mmol/L of pH6.50 phosphate buffers 80；
（2）The preparation of the chlorine dioxide standard color card after reagent blank is deducted, 7 10ml glass colorimetric cylinders are taken, the 1st is set
Root colorimetric cylinder is that blank tube, 2-7 root colorimetric cylinders are standard pipe, adds 10ml deionized waters in blank tube and standard pipe respectively
With the chlorine dioxide mark that 10ml concentration is 0.05mg/L, 0.10mg/L, 0.20mg/L, 0.30mg/L, 0.50mg/L, 0.80mg/L
Quasi- solution, adds step（1）React to color and no longer become under described liquid-type chlorine dioxide detection reagent 0.2ml, normal temperature
Change, as the color produced by colorimetric cylinder bottom up shoots each tube reaction, with mapping software photoshop7.0 by each standard pipe
Color is deducted after blank tube color, and the concentration of the color of gained and corresponding chlorine dioxide standard liquid is printed upon into thickness is
On 1mm water white transparency PVC plastic flitch；
（3）Take 2 10ml glass colorimetric cylinders, it is that blank tube, the 2nd colorimetric cylinder are sample cell to set the 1st colorimetric cylinder, point
10ml deionized waters and 10ml water samples to be measured are not added in blank tube and sample cell, step is added（1）Described in liquid
React to color and no longer change under type chlorine dioxide detection reagent, normal temperature, by step（2）Described standard color card is placed in this step
In blank bottom of the tube, by blank tube bottom up observe blank tube be superimposed with standard color card after color, and with sample cell face
Color is compareed, when both solid colours, is read and the chlorine dioxide concentration corresponding to sample cell color most close overlay color.
Embodiment 4
In order to which the effect further to the present invention is verified, the change of reagent blank is investigated to measurement result accuracy
Influence, the present invention has done following contrast test：By the step of this law embodiment 1（1）Described method prepares liquid-type chlorine dioxide
Detection reagent is test group, not deduct reagent blank, the detection reagent of standard color card direct color comparison be used as control group, by two
Group reagent puts 4 DEG C of refrigerators respectively and 37 water-baths are stored 7 days, and to a dense with national standard method measure chlorine dioxide
Spend and be measured for 0.05mg/L water sample, while replacing water sample to carry out reagent blank test with deionized water, with 721 light splitting light
Degree meter record reagent blank value, the results are shown in Table 2.
Table 2
From table 2 it can be seen that under identical experiment condition, with the gradually increase of reagent blank, the measure of test group
As a result keep constant, but the measurement result of control group substantially becomes big, shows that method of the present invention can effectively remove reagent empty
Influence of the white change to chlorine dioxide test result.
The present invention is not limited to above-mentioned embodiment, and persons skilled in the art are according to disclosed by the invention interior
Hold, the present invention, or every thinking using the present invention implemented using other a variety of embodiments, do simple change or
Change, both fall within protection scope of the present invention.
Claims (6)
1. a kind of method of chlorine dioxide content in quick detection water for eliminating reagent blank influence, it is characterised in that the side
Method comprises the following steps：
（1）The preparation of liquid-type chlorine dioxide detection reagent, the liquid-type chlorine dioxide detection reagent presses substance withdrawl syndrome
Following components and deionized water are configured to solution,
（N, N- diethyl -1,4- phenylenediamines）Sulfate 0.19-0.38 mmol/L
Glycine 0.267-0.675 mol/L
Disodium ethylene diamine tetraacetate 2.69-5.38 mmol/L
Ethylene glycol 0.36-0.90 mol/L
PH6.50 phosphate buffer 30-80 mmol/L；
（2）The preparation of the chlorine dioxide standard color card after reagent blank is deducted, at least 4 colorimetric cylinders are taken, optional 1 colorimetric cylinder is
Blank tube, remaining colorimetric cylinder is standard pipe, under the conditions of 5-40 DEG C, is first added in blank tube in deionized water, each standard pipe first
Add the deionized water added in the chlorine dioxide standard liquid of concentration in gradient change, blank tube and added in standard pipe two
Chlorine monoxid standard liquid volume is identical, the step of adding same volume in all colorimetric cylinders（1）Obtained liquid-type chlorine dioxide
Detection reagent, reaction no longer changes to color, and it is in color to be shot by colorimetric cylinder bottom up in each colorimetric cylinder, uses mapping software
Each standard pipe color is deducted into blank tube color, then the color of gained and the concentration of corresponding chlorine dioxide standard liquid are printed
On water white transparency plate；
（3）The detection of water sample to be measured, while taking at least 2 colorimetric cylinders, optional 1 colorimetric cylinder is blank tube, and remaining colorimetric cylinder is
Sample cell, under the conditions of 5-40 DEG C, first adds in deionized water, sample cell in blank tube and first adds in water sample to be measured, blank tube
The deionized water of addition is identical with the volume of water sample to be measured added in sample cell, the step of adding same volume in all colorimetric cylinders
（1）Obtained liquid-type chlorine dioxide detection reagent, reaction no longer changes to color, then by step（2）Made reference colour
The overlay color of blank bottom of the tube, observation blank tube and chlorine dioxide standard color card is placed in, is read and sample cell color most phase
Chlorine dioxide concentration corresponding near overlay color.
2. the side of chlorine dioxide content in a kind of quick detection water for eliminating reagent blank influence according to claim 1
Method, it is characterised in that：Step（1）In liquid-type chlorine dioxide detection reagent by substance withdrawl syndrome by following components and go from
Sub- water is configured to solution,
（N, N- diethyl -1,4- phenylenediamines）Sulfate 0.26-0.31 mmol/L
Glycine 0.37-0.57 mol/L
Disodium ethylene diamine tetraacetate 3.74-4.34 mmol/L
Ethylene glycol 0.53-0.73 mol/L
PH6.50 phosphate buffer 40-65 mmol/L.
3. the side of chlorine dioxide content in a kind of quick detection water for eliminating reagent blank influence according to claim 1
Method, it is characterised in that：Step（1）In liquid-type chlorine dioxide detection reagent by substance withdrawl syndrome by following components and go from
Sub- water is configured to solution,
（N, N- diethyl -1,4- phenylenediamines）The mmol/L of sulfate 0.28
The mol/L of glycine 0.471
The mmol/L of disodium ethylene diamine tetraacetate 4.04
The mol/L of ethylene glycol 0.63
The mmol/L of pH6.50 phosphate buffers 50.
4. chlorine dioxide contains in a kind of quick detection water for eliminating reagent blank influence according to claim 1 or 2 or 3
The method of amount, it is characterised in that：Step（2）In take 7 colorimetric cylinders, an optional colorimetric cylinder is blank tube, remaining six roots of sensation colorimetric
The dioxy that concentration is 0.05mg/L, 0.10mg/L, 0.20mg/L, 0.30mg/L, 0.50mg/L, 0.80mg/L is sequentially added in pipe
Change chlorine standard liquid.
5. chlorine dioxide contains in a kind of quick detection water for eliminating reagent blank influence according to claim 1 or 2 or 3
The method of amount, it is characterised in that：Water white transparency plate is the water white transparency PVC plastic flitch that thickness is 1-2mm.
6. the side of chlorine dioxide content in a kind of quick detection water for eliminating reagent blank influence according to claim 4
Method, it is characterised in that：Water white transparency plate is the water white transparency PVC plastic flitch that thickness is 1-2mm.
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| CN109406425A (en) * | 2018-11-13 | 2019-03-01 | 上海仪电科学仪器股份有限公司 | For detecting detection agent of chlorine dioxide and preparation method thereof and detection method in water |
| CN111504992A (en) * | 2020-05-06 | 2020-08-07 | 中国检验检疫科学研究院 | Rapid detection kit for chlorine dioxide after ballast water disinfection |
| CN114002212B (en) * | 2021-12-24 | 2022-04-26 | 广东环凯生物技术有限公司 | Chlorine dioxide detection reagent, kit and rapid detection method |
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