CN110646415A - Reagent for rapidly detecting magnesium hardness concentration in water and use method thereof - Google Patents
Reagent for rapidly detecting magnesium hardness concentration in water and use method thereof Download PDFInfo
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- CN110646415A CN110646415A CN201910922741.8A CN201910922741A CN110646415A CN 110646415 A CN110646415 A CN 110646415A CN 201910922741 A CN201910922741 A CN 201910922741A CN 110646415 A CN110646415 A CN 110646415A
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- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 27
- 239000011777 magnesium Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 10
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000000872 buffer Substances 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- 230000000873 masking effect Effects 0.000 claims abstract description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 48
- 239000002994 raw material Substances 0.000 claims description 45
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 32
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 claims description 32
- 239000004471 Glycine Substances 0.000 claims description 16
- 235000013878 L-cysteine Nutrition 0.000 claims description 16
- 239000004201 L-cysteine Substances 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 13
- 239000004570 mortar (masonry) Substances 0.000 claims description 13
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 9
- DEFVIWRASFVYLL-UHFFFAOYSA-N ethylene glycol bis(2-aminoethyl)tetraacetic acid Chemical compound OC(=O)CN(CC(O)=O)CCOCCOCCN(CC(O)=O)CC(O)=O DEFVIWRASFVYLL-UHFFFAOYSA-N 0.000 claims description 9
- 239000002202 Polyethylene glycol Substances 0.000 claims description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims description 8
- 239000012496 blank sample Substances 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 4
- 241000931888 Pyxis Species 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 abstract 1
- 239000002352 surface water Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 5
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
- 229910001425 magnesium ion Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002798 spectrophotometry method Methods 0.000 description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 206010012735 Diarrhoea Diseases 0.000 description 1
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
- G01N21/75—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
-
- 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
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- 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
- G01N2021/775—Indicator and selective membrane
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention belongs to the technical field of environmental protection detection, and particularly relates to a reagent and a use method for rapidly detecting the hardness concentration of magnesium in water. The reagent for rapidly detecting the hardness concentration of the high-concentration magnesium in the water consists of A, B and C, wherein the weight ratio of A: b: c-2-3: 2-3: 1-2; the component A is a solid buffer reagent with the pH value of 9.5-11; the component B is a mixture of a buffer reagent and a masking agent reagent; the component C is a mixture of a filler and a calcium magnesium reagent-acid gran K. The detection reagent is a solid reagent bag, is convenient to carry and simple to use, has a quick test process, and can be matched with a portable Pyxis SP-910 multi-parameter water quality analyzer to quickly and accurately detect the high magnesium hardness content in industrial circulating water, surface water and sewage.
Description
Technical Field
The invention belongs to the technical field of environmental protection detection, and particularly relates to a reagent and a use method for rapidly detecting the hardness concentration of magnesium in water.
Background
The magnesium ion concentration in water is the magnesium hardness, and when the magnesium ion concentration is too high, the magnesium ion concentration can react with carbonate, phosphate radical or silicate radical in water to generate magnesium carbonate, magnesium phosphate and magnesium silicate scale. The hardness of water is mainly calcium and magnesium, and the over-high hardness of water can cause harm to human health, daily life, industrial production and the like. For example, excessive magnesium sulfate in water can cause diarrhea. The measurement of magnesium hardness in water is carried out in many ways, but most of them are carried out in the laboratory, such as: with the development of modern analytical chemistry, limitations of a traditional water magnesium hardness analysis method on analysis efficiency and analysis capacity become more and more obvious, and application of the traditional water magnesium hardness analysis method in analysis of a complex water body system is limited. Reagents for testing magnesium hardness are mainly provided in the market by an EDTA titration method, a calcium-magnesium indicator method, an online titration method and the like. The reagent for measuring magnesium by the existing colorimetric method has low measuring range, only can measure a few ppm, and can only dilute dozens of times or even hundreds of times of harder water body for testing, so that the result can not accurately reflect the hardness of the water body.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defect of low reagent dosage range of rapid detection of magnesium hardness concentration in water in the prior art, and provides a reagent and a use method for rapid detection of high-concentration magnesium hardness concentration in water.
The invention realizes the purpose through the following technical scheme: a reagent for rapidly detecting the hardness concentration of high-concentration magnesium in water comprises A, B and C, wherein the weight ratio of A: b: c-2-3: 2-3: 1-2;
the component A is a solid buffer reagent with the pH value of 9.5-11;
the component B is a mixture of a buffer reagent and a masking agent reagent;
the component C is a mixture of a filler and a calcium magnesium reagent-acid gran K.
Preferably, the component A is prepared from the following raw materials in parts by weight: adding 10g-20g of glycine, 2g-4g of lithium hydroxide, 0.1g-0.5g L-cysteine and 1g-5g of EDTA.4Na into a glass mortar, fully grinding until all raw materials are uniformly mixed, and then subpackaging into 0.2-0.3g per bag to obtain a component A;
preferably, the component B is prepared from the following raw materials in parts by weight: adding 10g-20g of glycine, 2g-4g of lithium hydroxide, 0.1g-0.5g L-cysteine and 1g-5g of EGTA (ethylene glycol bis (2-aminoethyl ether) tetraacetic acid) into a glass mortar, fully grinding until all raw materials are uniformly mixed, and then subpackaging into 0.2-0.3g of each package to obtain a component B;
preferably, the component C is prepared from the following raw materials in parts by weight: 5g to 15g of filler polyethylene glycol, 0.5g to 1.5g of calcium magnesium reagent and 0.5g to 1.5g of acid gran K, fully grinding the raw materials until all the raw materials are uniformly mixed, and then subpackaging into 0.1g to 0.2g of each bag to obtain the component C.
According to another aspect of the present invention, the present invention provides a method for using a reagent for rapidly detecting a high concentration of magnesium hardness in water, comprising the steps of:
when in use, two 10ml colorimetric bottles are taken, and water samples are respectively added to the scale marks; adding the component A into a colorimetric bottle, and shaking up to dissolve the component A to obtain a blank sample; adding the component B into another colorimetric bottle, and shaking up to dissolve the component B to obtain a sample to be detected; and adding two parts of the component C into two colorimetric bottles respectively, shaking uniformly for dissolving, reacting for 2min at a timing, putting a blank sample into a spectrophotometric analyzer after timing is finished, performing background calibration, and putting a sample to be detected into the spectrophotometric analyzer for reading.
The invention adopts the solid reagent package, avoids the frequent configuration and instability of the liquid reagent, greatly improves the reaction sensitivity in the buffer solution with the pH value of about 9.5-11, thereby ensuring the accuracy and the reproducibility of the result, and has the advantages of simple and convenient operation, accurate result, low price, convenient storage and transportation, suitability for on-site rapid detection and the like.
Compared with the prior art, the invention has the following advantages:
1) the invention adopts a spectrophotometry method to directly test the high-range magnesium hardness without dilution;
2) the method of the invention is convenient to operate, and the reagent and the detection instrument thereof are convenient to carry.
Drawings
FIG. 1 is a linear relationship diagram of the rapid detection reagent for magnesium hardness concentration of the present invention and different magnesium concentrations.
Detailed Description
In the embodiment of the invention, the ultraviolet spectrophotometer analyzer is replaced by a Pyxis SP-910 portable multi-parameter water quality analyzer.
Example 1
The reagent is packaged by A, B, C three components, and the specific manufacturing method comprises the following steps:
1. preparing raw materials of the component A according to the following proportion: adding 10g of glycine, 3g of lithium hydroxide, 0.1g L-cysteine and 1g of EDTA.4Na into a glass mortar, fully grinding the materials until all the raw materials are uniformly mixed, and then subpackaging into 0.2g of each bag to obtain a reagent A;
2. preparing raw materials for the component B according to the following proportion: 10g of glycine, 2g of lithium hydroxide, 0.1g of L-cysteine and 1g of EGTA, adding the materials into a glass mortar, fully grinding until all raw materials are uniformly mixed, and then subpackaging into 0.2g of each bag to obtain a reagent B;
3. preparing raw materials for the component C according to the following proportion: 5g of polyethylene glycol 6000,0.5g of acid Glan K and 0.5g of calcium-magnesium reagent, adding the materials into a glass mortar, fully grinding until all raw materials are uniformly mixed, and then subpackaging into 0.1g of each bag to obtain the reagent C.
Example 2
The reagent is packaged by A, B, C three components, and the specific manufacturing method comprises the following steps:
1. preparing raw materials of the component A according to the following proportion: adding 15g of glycine, 3g of lithium hydroxide, 0.25g of 0.25g L-cysteine and 4.2g of EDTA.4Na into a glass mortar, fully grinding the materials until all the raw materials are uniformly mixed, and then subpackaging into 0.25g of each bag to obtain a reagent A;
2. preparing raw materials for the component B according to the following proportion: 15g of glycine, 3.2g of lithium hydroxide, 0.25g L-cysteine and 2.3g of EGTA, adding the materials into a glass mortar, fully grinding until all raw materials are uniformly mixed, and then subpackaging into 0.23 g of each bag to obtain a reagent B;
3. preparing raw materials for the component C according to the following proportion: 7.5g of polyethylene glycol 6000,1.2g of acid gran K and 1.2g of calcium-magnesium reagent, adding the materials into a glass mortar, fully grinding until all raw materials are uniformly mixed, and then subpackaging into 0.1g of each bag to obtain the reagent C.
Example 3
The reagent is packaged by A, B, C three components, and the specific manufacturing method comprises the following steps:
1. preparing raw materials of the component A according to the following proportion: adding 20g of glycine, 3g of lithium hydroxide, 0.5g L-cysteine and 5g of EDTA.4Na into a glass mortar, fully grinding the materials until all the raw materials are uniformly mixed, and then subpackaging into 0.3g of each bag to obtain a reagent A;
2. preparing raw materials for the component B according to the following proportion: 20g of glycine, 4g of lithium hydroxide, 0.5g of L-cysteine and 5g of EGTA, adding the materials into a glass mortar, fully grinding until all raw materials are uniformly mixed, and then subpackaging into 0.3g of each bag to obtain a reagent B;
3. preparing raw materials for the component C according to the following proportion: 15g of polyethylene glycol 8000,1.2g of acid Glan K and 1.2g of calcium-magnesium reagent, adding the materials into a glass mortar, fully grinding until all raw materials are uniformly mixed, and then subpackaging into 0.2g of each bag to obtain the reagent C.
Example four
0.9521g of anhydrous magnesium chloride is precisely weighed, dissolved in water and fixed to 100ml, which is CaCO310000PPM of magnesium standard solution mother liquor is diluted to prepare a series of standard solutions with different concentrations, wherein the concentrations are respectively 10, 50, 100, 150 and 200 PPM. Two 10ml colorimetric bottles are taken, and water samples are respectively added to the scale marks. 1 part of reagent A (prepared in example 3)Adding one of the color comparison bottles, shaking up and dissolving to obtain a blank sample; adding 1 pack of reagent B (prepared in example 3) into another colorimetric bottle, and shaking up to dissolve the reagent B, wherein the reagent B is a sample to be detected; and then adding two bags of reagent C (prepared in example 3) into two colorimetric bottles respectively, shaking up for dissolving, timing for reaction for 2min, after timing is finished, putting a blank sample into an ultraviolet spectrophotometry analyzer for background calibration, and putting a sample to be detected into the spectrophotometry analyzer for reading. The linear relation is seen by taking the absorbance as the abscissa and the concentration as the ordinate, the linear relation between the hard magnesium concentration and the absorbance is good, and R20.9979, as shown in fig. 1.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (5)
1. A reagent for rapidly detecting the hardness concentration of high-concentration magnesium in water comprises A, B and C, wherein the weight ratio of A: b: c-2-3: 2-3: 1-2;
the component A is a solid buffer reagent with the pH value of 9.5-11;
the component B is a mixture of a buffer reagent and a masking agent reagent;
the component C is a mixture of a filler and a calcium-magnesium reagent-acid granan K;
the component A is prepared from the following raw materials in parts by weight: adding 10g-20g of glycine, 2g-4g of lithium hydroxide, 0.1g-0.5g L-cysteine and 1g-5g of EDTA.4Na into a glass mortar, fully grinding until all raw materials are uniformly mixed, and then subpackaging into 0.2-0.3g per bag to obtain a component A;
the component B is prepared from the following raw materials in parts by weight: adding 10g-20g of glycine, 2g-4g of lithium hydroxide, 0.1g-0.5g L-cysteine and 1g-5g of EGTA into a glass mortar, fully grinding until all raw materials are uniformly mixed, and then subpackaging into 0.2-0.3g of each bag to obtain a component B;
the component C is prepared from the following raw materials in parts by weight: 5g to 15g of filler polyethylene glycol, 0.5g to 1.5g of calcium magnesium reagent and 0.5g to 1.5g of acid gran K, fully grinding the raw materials until all the raw materials are uniformly mixed, and then subpackaging into 0.1g to 0.2g of each bag to obtain the component C.
2. The reagent for rapidly detecting the hardness concentration of high-concentration magnesium in water according to claim 1, wherein:
fully grinding 10g of glycine, 3g of lithium hydroxide, 0.1g L-cysteine and 1g of EDTA.4Na until all raw materials are uniformly mixed, and then subpackaging into 0.2g of each bag to obtain a component A;
fully grinding 10g of glycine, 2g of lithium hydroxide, 0.1g of L-cysteine and 1g of EGTA until all raw materials are uniformly mixed, and then subpackaging into 0.2g of each bag to obtain a component B;
5g of polyethylene glycol 6000,0.5g of acid gran K and 0.5g of calcium-magnesium reagent, fully grinding the raw materials until all the raw materials are uniformly mixed, and then subpackaging into 0.1g of each bag to obtain the component C.
3. The reagent for rapidly detecting the hardness concentration of high-concentration magnesium in water according to claim 1, wherein:
fully grinding 15g of glycine, 3g of lithium hydroxide, 0.25g of 0.25g L-cysteine and 4.2g of EDTA.4Na until all raw materials are uniformly mixed, and then subpackaging into 0.25g of each bag to obtain a component A;
15g of glycine, 3.2g of lithium hydroxide, 0.25g L-cysteine and 2.3g of EGTA are fully ground until all raw materials are uniformly mixed, and then the mixture is subpackaged into 0.23 g of each bag to form a component B;
7.5g of polyethylene glycol 6000,1.2g of acid gran K and 1.2g of calcium-magnesium reagent are fully ground until all raw materials are uniformly mixed, and then the raw materials are subpackaged into 0.1g of each bag to form the component C.
4. The reagent for rapidly detecting the hardness concentration of high-concentration magnesium in water according to claim 1, wherein:
fully grinding 20g of glycine, 3g of lithium hydroxide, 0.5g L-cysteine and 5g of EDTA.4Na until all raw materials are uniformly mixed, and then subpackaging into 0.3g of each bag to obtain a component A;
20g of glycine, 4g of lithium hydroxide, 0.5g of L-cysteine and 5g of EGTA are fully ground until all raw materials are uniformly mixed, and then the raw materials are subpackaged into 0.3g of each bag to form a component B;
15g of polyethylene glycol 8000,1.2g of acid Glan K and 1.2g of calcium-magnesium reagent are fully ground until all raw materials are uniformly mixed, and then the raw materials are subpackaged into 0.2g of each bag to form the component C.
5. The use method of the reagent for rapidly detecting the hardness concentration of high-concentration magnesium in water according to claim 1, comprising the following steps:
when in use, two 10ml colorimetric bottles are taken, and water samples are respectively added to the scale marks; adding the component A into a colorimetric bottle, and shaking up to dissolve the component A to obtain a blank sample;
adding the component B into another colorimetric bottle, and shaking up to dissolve the component B to obtain a sample to be detected;
and adding two parts of the component C into two colorimetric bottles respectively, shaking uniformly for dissolving, reacting for 2min at a timing, putting a blank sample into a spectrophotometric analyzer after timing is finished, performing background calibration, and putting a sample to be detected into the spectrophotometric analyzer for reading.
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