CN109358051A - Survey the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper and preparation method of ammonia in air - Google Patents
Survey the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper and preparation method of ammonia in air Download PDFInfo
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- CN109358051A CN109358051A CN201811547317.1A CN201811547317A CN109358051A CN 109358051 A CN109358051 A CN 109358051A CN 201811547317 A CN201811547317 A CN 201811547317A CN 109358051 A CN109358051 A CN 109358051A
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- 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
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases
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- 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
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N2021/7756—Sensor type
- G01N2021/7759—Dipstick; Test strip
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Abstract
The chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper and preparation method of ammonia in a kind of survey air belong to environment and quickly detect and industrial hygiene field.The test paper is the test paper that load has bromocresol purple sodium salt, Bromothymol blue sodium salt, surfactant chain alkyl trimethyl ammonium in base paper；In mass ratio, bromocresol purple sodium salt: Bromothymol blue sodium salt: surfactant chain alkyl trimethyl ammonium=(4-8): (6-10): (0.02-0.2).Preparation method are as follows: prepare soak according to supported reagent, base paper is impregnated, dry plastic packaging.The test paper is cooperateed with according to bromocresol purple sodium salt with Bromothymol blue sodium salt to be acted on ammonia, so that the test paper of script yellow is become bluish violet, discoloration is obvious, and test paper reaction color edge clear is easy to Observe and measure, and precision is higher.Chain alkyl trimethyl ammonium keeps bromocresol purple sodium salt, Bromothymol blue sodium salt dispersibility more preferable, and the uniformity on filter paper is more preferable, increases test paper discoloration strip length, sensitivity increases.
Description
Technical field
It is quickly detected and industrial hygiene field the invention belongs to environment, is a kind of chain alkyl trimethyl of ammonia in survey air
Ammonium enhanced sensitivity mix reagent test paper and preparation method.
Background technique
Being present in excess for ammonia in air allows the moisture of skin histology to tail off, it might even be possible to and it is denaturalized tissue protein,
Membrane structure degenerates.The resistance of human body can be made to decline, because ammonia has the function of paralysis, enter pathogen
Human body, human body is because the intrusion of pathogen will be damaged.In daily life, the concentration of ammonia is higher than normal value for people
Body, poultry, plant etc. is all harmful.We should pay attention to the source of ammonia in life, ammonia in working environment often
Content, taken precautions against.Therefore it needs in real time to be monitored environment in relevant environment, with greater need for a kind of using simple and efficient
Detection method.
The detection method of ammonia has nessler reagent, salicylic acid-sodium potassium tartrate tetrahydrate spectrophotometry, chromatography chemiluminescence
Hair etc..These detection methods need the collection in worksite sample of ammonia mostly, then sample treatment, analysis detection, the time needed
It is longer, need professional to operate.Although its method is mature, accuracy is high, is not suitable for quickly detection and layman
On-site measurement.
The use of Test paper, testing cost is low, and speed is fast, and not needing professional also can be used.It is a kind of quick, just
Take, it is easy to use measurement ammonia test paper be it is applicable, have application prospect.
Summary of the invention
The purpose of the present invention is it is a kind of survey air in ammonia chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper and preparation method,
Mainly for detection of the concentration of ammonia in the surrounding air for having ammonia, ammonia can be carried out with the test paper in a certain amount of air reacts the test paper
Make test paper color change, the length and ammonia density of reaction color have quantitative relationship, according to the discoloration strip length and ammonia of test paper
The relationship of concentration obtains the concentration of ammonia in air.
The present invention is a kind of chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper for surveying ammonia in air, is loaded in base paper
There is the test paper of bromocresol purple sodium salt, Bromothymol blue sodium salt, surfactant chain alkyl trimethyl ammonium；Wherein, by quality
Than bromocresol purple sodium salt: Bromothymol blue sodium salt: surfactant chain alkyl trimethyl ammonium=(4-8): (6-10):
(0.02-0.2)。
Described surveys in air in the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia, the chain alkyl three
Methyl ammonium is the alkyl trimethyl ammonium of C12-C18, more preferably cetyl trimethylammonium bromide (CTMAB) or cetyl three
Ammonio methacrylate (CTMAC).
The chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper for surveying ammonia in air, measurement ammonia density range are
6.0~35mg/m3, detect and be limited to 2.5mg/m3。
It is described to survey in air in the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia, base paper be ordinary filter paper,
One of chromatography filter paper, qualitative filter paper, quantitative filter paper.
Described surveys in air in the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia, and specification is preferred are as follows: long
For 40~100mm, width is 3~5mm.
The preparation method for surveying the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air of the invention, including with
Lower step:
Step 1: preparing soak
Bromocresol purple sodium salt solution, Bromothymol blue sodium salt solution and chain alkyl trimethyl ammonium solution are mixed equal
It is even, with no ammonium hydroxide constant volume, obtain soak；
Wherein, the content of the ingredient and each ingredient that contain in soak are as follows: in every 100mL soak, bromocresol purple sodium
Salt is 16-32mg, Bromothymol blue sodium salt is 24-40mg, chain alkyl trimethyl ammonium is 0.08-0.8mg, remaining is no ammonia
Water；
Step 2: dipping
Base paper is placed in soak and is impregnated, the test paper after being impregnated；Wherein, soaking time is that base paper absorbs soak
Until reaching saturation；
Step 3: dry plastic packaging
After the test paper drying after immersion, in 110~150 DEG C of progress plastic packagings, the chain alkyl three for surveying ammonia in air is obtained
Methyl ammonium enhanced sensitivity mix reagent test paper.
In the step 2, the soaking time is 5~25min.
In the step 2, the soaking temperature is 10~70 DEG C.
In the step 3, the drying is dried or is dried for room temperature.
In the step 3, the drying, specifically: the test paper after immersion is placed in constant temperature oven, 40~90
DEG C drying 10~90min.
In the step 3, the plastic packaging carries out plastic packaging press mold using plastic packaging machine.
The chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper for surveying ammonia in air, specification, Ke Yi
It cuts, can also be cut before immersion before plastic packaging after drying.
In the present invention, the water removes specified otherwise, refers both to no ammonium hydroxide.
The detection method of the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in a kind of survey air of the invention, packet
Include following steps:
(1) one end for surveying the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air is cut off, is placed on inspection
Region is surveyed, ammonia and surveying loads on the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air in detection zone air
Reagent reaction, test paper become bluish violet by yellow, after reacting 15~30min, read the length that bluish violet changes along test strips, are
Change colour strip length；
(2) is measured by discoloration strip length, detection zone can be obtained for the relationship of ammonia density according to the discoloration strip length of test paper
The concentration of ammonia in the air of domain.
The discoloration strip length of the test paper is to the relationship of ammonia density using one of following four expression way:
The first, according to the standard series concentration experiment of ammonia, obtain discoloration strip length and ammonia concentration in air it is linear
Regression equation；Discoloration strip length, which is acquired, by regression equation corresponds to ammonia density.
Second, according to the standard series concentration experiment of ammonia, obtained discoloration strip length is corresponding with ammonia concentration in air
Relationship, production discoloration strip length-ammonia density table acquire ammonia concentration in air according to discoloration strip length using interpolation method.
The third, according to the equation of linear regression of discoloration strip length and ammonia concentration in air, ammonia surveyors' staff obtained；Benefit
The ammonia density corresponding to tape measure discoloration strip length.
4th kind, according to the equation of linear regression of discoloration strip length and ammonia concentration in air, the ammonia directly in surveying air
Measuring scale is marked on chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper；It is dense that ammonia in air is directly read according to discoloration strip length
Degree.
The equation of linear regression or discoloration strip length-ammonia density table of the discoloration strip length and ammonia concentration in air, root
Lower experiment obtains accordingly:
(1) chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper one end that n item surveys ammonia in air is cut off, is placed in same
In the air bottle of ammonia density known to one, reaction 15min-30min is taken out, meanwhile, it is marked in the discoloration band intersection of test paper, uses lattice
Ruler measurement discoloration strip length, when measurement, should ensure that the zero graduation line of the opening dative ruler of test paper is overlapped record data, take n test paper
Foundation of the average value of parallel laboratory test as discoloration strip length；Wherein, n >=3；
(2) step (1) is repeated, the relation with contents table of the ammonia known to detection difference in the air bottle of ammonia density changes colour
Strip length-ammonia density table, and acquire the equation of linear regression of discoloration strip length and ammonia concentration in air content.
(3) in the detection process, the ammonia density range of measurement is 6.0~35mg/m3, it is 2.5mg/m in ammonia3, ammonia is anti-
The colour band that bluish violet should be had occurs, but is difficult to Accurate Determining length, so the detection of method is limited to 2.5mg/m3。
The chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia and its preparation and inspection in a kind of survey air of the invention
Survey method, the beneficial effect is that:
The present invention is cooperateed with according to bromocresol purple sodium salt with Bromothymol blue sodium salt to be acted on ammonia, makes the examination of script yellow
Paper becomes bluish violet, and discoloration is obvious, and test paper reaction color edge clear is easy to Observe and measure, and precision is higher.Chain alkyl three
Methyl ammonium keeps bromocresol purple sodium salt, Bromothymol blue sodium salt dispersibility more preferable, and the uniformity on filter paper is more preferable.Become test paper
Colour band length increases, and sensitivity increases.
The presence that can indicate ammonia around this principle, according to the reaction length of test paper indicate ammonia concentration number.
The chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper for surveying ammonia in air is prepared, relative standard deviation 0.3- is detected
4.8%.According to the rules, the time weight average allowable concentration of ammonia is no more than 20mg/m in workplace air3.Therefore the present invention is suitable
For having in the emergency monitoring of the measurement of the workplace of ammonia and ammonia.Because the test paper uniformity and cost of manufacture are low, using more
It is convenient, therefore have significant application value.
It loads bromocresol purple sodium salt and mixes examination with Bromothymol blue sodium salt and surfactant chain alkyl trimethyl ammonium
The test paper of agent production makes the test paper of yellow become bluish violet when encountering ammonia.Depositing for ammonia can be indicated around this principle
, according to the reaction length of test paper indicate ammonia concentration number.Bromocresol purple sodium salt and Bromothymol blue sodium salt are difference
It is water soluble acid neutralization indicator, two kinds of reagent mixing collaborations is acted on ammonia in the present invention, color change becomes apparent from, and judgement is more
Accurately.Surfactant chain alkyl trimethyl ammonium is a kind of cationic surfactant, is frequently utilized for increasing in analytical chemistry
Molten sensitization.It increases test paper discoloration strip length in the present invention, and sensitivity increases.
Specific embodiment
The technical solution of the invention made and detection method are further elaborated combined with specific embodiments below.
Embodiment 1
The chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia, specially loads in chromatography filter paper in a kind of survey air
There is the test paper of bromocresol purple sodium salt, Bromothymol blue sodium salt, surfactant cetyl trimethylammonium bromide (CTMAB),
It is in mass ratio bromocresol purple sodium salt: Bromothymol blue sodium salt: surfactant cetyl trimethylammonium bromide
(CTMAB)=6:8:0.1.
The a length of 40-80mm for surveying the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air, width are
2-5mm。
The preparation method of the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in a kind of survey air, including following step
It is rapid:
Step 1, soak is prepared
Bromocresol purple sodium salt is dissolved in no ammonium hydroxide, bromocresol purple sodium-salt aqueous solution is obtained；
Bromothymol blue sodium salt is dissolved in no ammonium hydroxide, Bromothymol blue sodium-salt aqueous solution is obtained；
Chain alkyl trimethyl ammonium is dissolved in no ammonium hydroxide, chain alkyl trimethyl ammonium aqueous solution is obtained；
Bromothymol blue sodium-salt aqueous solution and bromocresol purple sodium-salt aqueous solution, aqueous surfactant solution are added to one
Determine in the container of volume, with no ammonium hydroxide constant volume, and shake up, obtain soak, wherein the ingredient that contains in soak and it is each at
The content divided are as follows: in every 100mL soak, bromocresol purple sodium salt (24mg), Bromothymol blue sodium salt (32mg), surface-active
Agent cetyl trimethylammonium bromide (CTMAB) (0.4mg), remaining is no ammonium hydroxide；
Step 2, it impregnates
Chromatography filter paper is cut into long 80mm first, several chromatography filter paper items of wide 3mm are spare.
By chromatography filter paper item, it is placed in soak and impregnates, the filter paper item after being impregnated；Wherein, soaking time is
15min；Soaking temperature is room temperature；
Step 3, room temperature is dried or is dried
Filter paper item after immersion is dried 18 minutes at 80 DEG C, obtains dry filter paper item；
Step 4, plastic packaging
By dry filter paper item, the chain alkyl for surveying ammonia in air is obtained in 120 DEG C of progress plastic packaging press molds with plastic packaging machine
Trimethyl ammonium enhanced sensitivity mix reagent test paper.
The detection method of the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in a kind of survey air, including following step
It is rapid:
(1) one end for surveying the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air is cut off, is placed on inspection
Region is surveyed, ammonia and the reagent in the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in survey air in detection zone air
Reaction, yellow become blue, after reacting 15min, read bluish violet along the length of discoloration test paper variation, for the strip length that changes colour；
(2) according to the relationship of the discoloration strip length and ammonia density of test paper, measurement discoloration strip length, to obtain detection zone
The concentration of ammonia in air.
The discoloration strip length of the test paper and the relationship of ammonia density are according to discoloration strip length and ammonia concentration in air
Equation of linear regression, ammonia surveyors' staff obtained；
The relationship of the discoloration strip length and ammonia density of the test paper, determines method are as follows:
(1) chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper one end that n item surveys ammonia in air is cut off, is placed in same
In the air bottle of ammonia density known to one, reaction 15min is taken out, meanwhile, it is marked in the discoloration band intersection of discoloration test paper, to prevent
The length of colour band will increase or boundary line virtualization bring error, measures discoloration strip length with lattice ruler, when measurement should ensure that discoloration examination
The zero graduation line of the opening dative ruler of paper is overlapped record data, takes the average value of n item discoloration test paper parallel laboratory test as discoloration band
The foundation of length；Wherein, n >=5；
(2) step (1) is repeated, the content of the ammonia known to detection difference in the air bottle of ammonia density obtains discoloration belt length
The relationship of degree and ammonia concentration in air content；
According to the equation of linear regression of described discoloration strip length and ammonia concentration in air, specifically: the change for the test paper that changes colour
The equation of linear regression of colour band length and ammonia concentration in air are as follows:
Y=0.5043x+2.5859
In formula, x is ammonia density, unit mg/m3；
Y is the discoloration strip length of discoloration test paper, unit mm；
The discoloration strip length of discoloration test paper and the related coefficient of ammonia concentration in air are 0.9985；
The present embodiment chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper measurement ammonia obtained for surveying ammonia in air contains
Amount, compared with national standard method " the measurement Berthelot spectrophotometry of air and wasteair ammonia " (HJ 533-2009)
Compared with the results are shown in Table 1.
Analysis result (the mg/m of ammonia in 1 practical measurement air of table3)
The result shows that two methods result is close in detection range.And this test paper method have it is easy to carry, quickly
Measurement, feature easy to detect.
Embodiment 2
The chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in a kind of survey air has bromine for load on qualitative filter paper
Cresol-purple sodium salt, Bromothymol blue sodium salt, surfactant hexadecyltrimethylammonium chloride (CTMAC)；It is in mass ratio,
Bromocresol purple sodium salt, Bromothymol blue sodium salt, surfactant hexadecyltrimethylammonium chloride (CTMAC)=6:8:0.1.
The a length of 80mm, width 4mm for surveying the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air.
The preparation method of the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in a kind of survey air, including following step
It is rapid:
Step 1, soak is prepared
By the bromine thyme powder orchid sodium salt centainly matched and bromocresol purple sodium salt, surfactant is added to certain volume
Container in, with no ammonium hydroxide constant volume, and shake up, obtain soak, wherein the ingredient that contains in soak and each ingredient contain
Amount are as follows: in every 100mL soak, bromocresol purple sodium salt (24mg), Bromothymol blue sodium salt (32mg), surfactant 16
Alkyl trimethyl ammonium chloride (CTMAC) (0.4mg), remaining is no ammonium hydroxide；
Step 2, it impregnates
By qualitative filter paper, it is placed in soak and impregnates, the filter paper after being impregnated；Wherein, soaking time 15min, leaching
Steeping temperature is 60 DEG C；
Step 3, room temperature is dried or is dried
Filter paper after immersion is dried 15 minutes at 82 DEG C, obtains dry filter paper；
Step 4, plastic packaging
By dry filter paper, 80mm is grown into cutting, and width is the filter paper item of 4mm, with plastic packaging machine, in 120 DEG C of progress plastic packagings
Press mold obtains the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper for surveying ammonia in air.
The detection method of the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in a kind of survey air, including following step
It is rapid:
(1) one end for surveying the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air is cut off, is placed on inspection
Region is surveyed, ammonia and the reagent in the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in survey air in detection zone air
Reaction, yellow become blue, after reacting 15min, read bluish violet along the length of discoloration test paper variation, for the strip length that changes colour；
(2) according to the relationship of the discoloration strip length and ammonia density of test paper, measurement discoloration strip length, to obtain detection zone
The concentration of ammonia in air.
The discoloration strip length of the test paper and the relationship of ammonia density are according to discoloration strip length and ammonia concentration in air
Equation of linear regression, ammonia surveyors' staff obtained；
The relationship of the discoloration strip length and ammonia density of the test paper, determines method are as follows:
(1) chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper one end that n item surveys ammonia in air is cut off, is placed in same
In the air bottle of ammonia density known to one, reaction 15min is taken out, meanwhile, it is marked in the discoloration band intersection of discoloration test paper, to prevent
The length of colour band will increase or boundary line virtualization bring error, measures discoloration strip length with lattice ruler, when measurement should ensure that discoloration examination
The zero graduation line of the opening dative ruler of paper is overlapped record data, takes the average value of n item discoloration test paper parallel laboratory test as discoloration band
The foundation of length；Wherein, n >=5；
(2) step (1) is repeated, the content of the ammonia known to detection difference in the air bottle of ammonia density obtains discoloration belt length
The relationship of degree and ammonia concentration in air content；
According to the equation of linear regression of the discoloration strip length and ammonia concentration in air, ammonia is dense in semiquantitative determination air
Degree.
The present embodiment chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper measurement ammonia obtained for surveying ammonia in air contains
Amount, compared with national standard method " the measurement Berthelot spectrophotometry of air and wasteair ammonia " (HJ 533-2009)
Compared with the results are shown in Table 2.
Analysis result (the mg/m of ammonia in 2 practical measurement air of table3)
The result shows that two methods result is close in detection range.And this test paper method have it is easy to carry, quickly
Measurement, feature easy to detect.
Claims (10)
1. a kind of chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper for surveying ammonia in air, which is characterized in that in the survey air
The chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia is that load has bromocresol purple sodium salt, Bromothymol blue sodium in base paper
The test paper of salt, surfactant chain alkyl trimethyl ammonium；Wherein, in mass ratio, bromocresol purple sodium salt: Bromothymol blue sodium
Salt: surfactant chain alkyl trimethyl ammonium=(4-8): (6-10): (0.02-0.2).
2. surveying the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air as described in claim 1, feature exists
In described surveys in air in the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia, the chain alkyl trimethyl
Ammonium is the alkyl trimethyl ammonium of C12-C18.
3. surveying the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air as described in claim 1, feature exists
In, the described chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper for surveying ammonia in air, measurement ammonia density range is 6.0~
35mg/m3, detect and be limited to 2.5mg/m3。
4. surveying the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air as described in claim 1, feature exists
In described surveys in air in the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia, and base paper is ordinary filter paper, chromatography filter
One of paper, qualitative filter paper, quantitative filter paper；
Described surveys in air in the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia, specification are as follows: a length of 40~
100mm, width are 3~5mm.
5. the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in survey air described in claim 1-4 any one
Preparation method, which comprises the following steps:
Step 1: preparing soak
Bromocresol purple sodium salt solution, Bromothymol blue sodium salt solution and chain alkyl trimethyl ammonium solution are uniformly mixed, used
Without ammonium hydroxide constant volume, soak is obtained；
Wherein, the content of the ingredient and each ingredient that contain in soak are as follows: in every 100mL soak, bromocresol purple sodium salt is
16-32mg, Bromothymol blue sodium salt are 24-40mg, chain alkyl trimethyl ammonium is 0.08-0.8mg, remaining is no ammonium hydroxide；
Step 2: dipping
Base paper is placed in soak and is impregnated, the test paper after being impregnated；Wherein, soaking time is that base paper absorption soak reaches
Until saturation；
Step 3: dry plastic packaging
After the test paper drying after immersion, in 110~150 DEG C of progress plastic packagings, the chain alkyl trimethyl for surveying ammonia in air is obtained
Ammonium enhanced sensitivity mix reagent test paper.
6. surveying the preparation side of the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air as claimed in claim 5
Method, which is characterized in that in the step 2, soaking time is 5~25min, and soaking temperature is 10~70 DEG C.
7. surveying the preparation side of the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air as claimed in claim 5
Method, which is characterized in that in the step 3, the drying is dried or dried for room temperature；
The drying, specifically: the test paper after immersion is placed in constant temperature oven, in 40~90 DEG C of 10~90min of drying；
The plastic packaging carries out plastic packaging press mold using plastic packaging machine；
The chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper for surveying ammonia in air, specification are moulded after the drying
It cuts before envelope, or is cut before immersion.
8. the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in survey air described in claim 1-4 any one
Detection method, which comprises the following steps:
(1) one end for surveying the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air is cut off, is placed on detection zone
The reagent loaded on the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air ammonia and is surveyed in detection zone air in domain
Reaction, test paper become bluish violet by yellow, after reacting 15~30min, the length that bluish violet changes along test strips are read, for discoloration
Strip length；
(2) discoloration strip length is measured to the relationship of ammonia density according to the discoloration strip length of test paper, detection zone sky can be obtained
The concentration of ammonia in gas.
9. surveying the detection side of the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air as claimed in claim 8
Method, which is characterized in that the equation of linear regression or discoloration strip length-ammonia density of the discoloration strip length and ammonia concentration in air
Table is obtained according to following experiment:
The first, is according to the standard series concentration experiment of ammonia, the linear regression of obtained discoloration strip length and ammonia concentration in air
Equation；Discoloration strip length, which is acquired, by regression equation corresponds to ammonia density；
Second, according to the standard series concentration experiment of ammonia, the corresponding relationship of obtained discoloration strip length and ammonia concentration in air,
Production discoloration strip length-ammonia density table acquires ammonia concentration in air according to discoloration strip length using interpolation method；
The third, according to the equation of linear regression of discoloration strip length and ammonia concentration in air, ammonia surveyors' staff obtained；Utilize mark
Ammonia density corresponding to ruler measurement discoloration strip length；
4th kind, according to the equation of linear regression of discoloration strip length and ammonia concentration in air, the long-chain of ammonia directly in surveying air
Measuring scale is marked on alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper；Ammonia concentration in air is directly read according to discoloration strip length.
10. surveying the detection side of the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper of ammonia in air as claimed in claim 9
Method, which is characterized in that the equation of linear regression or discoloration strip length-ammonia density of the discoloration strip length and ammonia concentration in air
Table is obtained according to following experiment:
(1) n item chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper one end of ammonia in air is surveyed to cut off, be placed in it is same
Knowing in the air bottle of ammonia density, reaction 15min-30min takes out, meanwhile, it marks in the discoloration band intersection of test paper, is surveyed with lattice ruler
Quantitative change colour band length, when measurement, should ensure that the zero graduation line of the opening dative ruler of test paper is overlapped record data, take n test paper parallel
Foundation of the average value of experiment as discoloration strip length；Wherein, n >=3；
(2) step (1), the relation with contents table of the ammonia known to detection difference in the air bottle of ammonia density, i.e. discoloration belt length are repeated
Degree-ammonia density table, and acquire the equation of linear regression of discoloration strip length and ammonia concentration in air content.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811547317.1A CN109358051A (en) | 2018-12-18 | 2018-12-18 | Survey the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper and preparation method of ammonia in air |
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| CN201811547317.1A CN109358051A (en) | 2018-12-18 | 2018-12-18 | Survey the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper and preparation method of ammonia in air |
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| CN201811547317.1A Withdrawn CN109358051A (en) | 2018-12-18 | 2018-12-18 | Survey the chain alkyl trimethyl ammonium enhanced sensitivity mix reagent test paper and preparation method of ammonia in air |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11162840B1 (en) | 2021-04-20 | 2021-11-02 | Giftedness And Creativity Company | Method and kit for detecting technetium-99m radioisotopes |
| CN114113072A (en) * | 2021-12-09 | 2022-03-01 | 南昌师范学院 | Composite indicator, quick detection test paper and method for detecting freshness of pork |
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| CN1595120A (en) * | 2004-07-08 | 2005-03-16 | 中国人民解放军后勤工程学院 | Process for making test paper used for acceptance test of transport oil container after washing |
| CN101900684A (en) * | 2009-10-16 | 2010-12-01 | 北京智云达科技有限公司 | Test paper for quickly detecting urea in liquid milk and preparation method thereof |
| CN108776132A (en) * | 2018-04-18 | 2018-11-09 | 沈阳理工大学 | The simple test paper of ammonia and its preparation and assay method in a kind of measurement air |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1595120A (en) * | 2004-07-08 | 2005-03-16 | 中国人民解放军后勤工程学院 | Process for making test paper used for acceptance test of transport oil container after washing |
| CN101900684A (en) * | 2009-10-16 | 2010-12-01 | 北京智云达科技有限公司 | Test paper for quickly detecting urea in liquid milk and preparation method thereof |
| CN108776132A (en) * | 2018-04-18 | 2018-11-09 | 沈阳理工大学 | The simple test paper of ammonia and its preparation and assay method in a kind of measurement air |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11162840B1 (en) | 2021-04-20 | 2021-11-02 | Giftedness And Creativity Company | Method and kit for detecting technetium-99m radioisotopes |
| CN114113072A (en) * | 2021-12-09 | 2022-03-01 | 南昌师范学院 | Composite indicator, quick detection test paper and method for detecting freshness of pork |
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