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Preparation method of tap water sulfate detection agent

A technology of sulfate and detection agent, which is applied in the field of preparation of sulfate detection agent in tap water, can solve the problems of complicated operation, involving sample processing and the like, and achieves the effects of being convenient to carry and low in price

Inactive Publication Date: 2016-05-25
WUXI JIJIN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For samples greater than 10mg / L sulfate brine, the gravimetric method is more accurate, but this method involves sample processing, and the operation is cumbersome, so it is generally not used in routine determination of water quality

Method used

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  • Preparation method of tap water sulfate detection agent
  • Preparation method of tap water sulfate detection agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: According to the mass ratio, respectively weigh calcium hydroxide 0.6g, citric acid 3.3g, polyvinyl alcohol 1.5g, polyvinylpyrrolidone 6.5g; the citric acid of above-mentioned mass percentage is dissolved in polyvinyl alcohol, then add Mix polyvinylpyrrolidone evenly, place it indoors and leave it open for 0.6h, volatilize the polyvinyl alcohol and grind it into a powder, then add the above-mentioned mass percentage of barium chloride, calcium hydroxide and appropriate amount of distilled water to the powder, and mix evenly, that is A detection agent for the detection of sulfate content in water.

[0010] Take 10ml of tap water in a test tube, then add 0.1g of the above-mentioned sulfate content detection agent, shake the test tube for 1min, mix thoroughly, filter, use a spectrophotometer to measure the absorbance of the filtrate at a wavelength of 400nm, and calculate the sulfate concentration to be 102mg / L , which is lower than the national standard of 2...

Embodiment 2

[0011] Embodiment 2: according to the mass ratio, respectively weigh calcium hydroxide 1.0g, citric acid 4.5g, polyvinyl alcohol 2.5g, polyvinylpyrrolidone 7.5g; the citric acid of above-mentioned mass percentage is dissolved in polyvinyl alcohol, then add Mix polyvinylpyrrolidone evenly, place it indoors and leave it open for 0.5h, volatilize the polyvinyl alcohol and grind it into powder, then add the above-mentioned mass percentage of barium chloride, calcium hydroxide and appropriate amount of distilled water to the powder, and mix evenly, that is A detection agent for the detection of sulfate content in water.

[0012] Take 10ml of tap water in a test tube, then add 0.1g of the above-mentioned sulfate content detection agent, shake the test tube for 1min, mix well, filter, use a spectrophotometer to measure the absorbance of the filtrate at a wavelength of 400nm, and calculate the sulfate concentration to be 112mg / L , which is lower than the national standard of 250mg / L, ...

Embodiment 3

[0013] Embodiment 3: according to mass ratio, take by weighing calcium hydroxide 1.5g, citric acid 6.5g, polyvinyl alcohol 3.5g, polyvinylpyrrolidone 8.5g respectively; The citric acid of above-mentioned mass percentage is dissolved in polyvinyl alcohol, then add Mix polyvinylpyrrolidone evenly, place it indoors and leave it open for 0.4h, volatilize the polyvinyl alcohol and grind it into powder, then add the above-mentioned mass percentage of barium chloride, calcium hydroxide and appropriate amount of distilled water to the powder, and mix evenly, that is A detection agent for the detection of sulfate content in water.

[0014] Take 10ml of tap water in a test tube, then add 0.1g of the above-mentioned sulfate content detection agent, shake the test tube for 1min, mix thoroughly, filter, use a spectrophotometer to measure the absorbance of the filtrate at a wavelength of 400nm, and calculate the sulfate concentration to be 132mg / L , which is lower than the national standard...

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Abstract

The present invention discloses a preparation method of a tap water sulfate detection agent, and the tap water sulfate detection agent includes a composition comprising the following components by weight: 0.6% to 1.5% of calcium hydroxide; 3.3% to 6.5% of citric acid; 1.5% to 3.5% of polyvinyl alcohol; 6.5% to 8.5% of polyvinyl pyrrolidone and the balance of distilled water. The tap water sulfate detection agent is low in price, portable, fast and accurate; the tap water sulfate content detection range is 50-100mg / L, and the tap water sulfate detection agent can be operated by non-professionals.

Description

technical field [0001] The invention relates to a preparation method of a sulfate detection agent in tap water. Background technique [0002] A small amount of sulfate in tap water is harmless to animals and humans, but when it exceeds 250 mg / L, it has a diarrhea-causing effect; boiler water contains sulfate, which can form scale when it encounters calcium ions; sulfate and cement form aluminum calcium sulfate, which causes volume expansion. Concrete collapse; Geological departments often use the ratio of SO42- and Cl- content as the main sign of general survey of sulfide deposits, which has a certain reference value for searching for sulfide beds and understanding the distribution of oil fields. Therefore, the determination of sulfate in water is important in environmental protection, geology , construction and other fields are of great significance. The detection of sulfate mainly includes gravimetric method, volumetric method, spectrophotometric method, turbidimetric met...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N21/75
CPCG01N21/31G01N21/75
Inventor 刘进军
Owner WUXI JIJIN ENVIRONMENTAL PROTECTION TECH CO LTD