CN104345041A - Preparation and application methods of detection powder used for detecting concentration of chloride in water - Google Patents
Preparation and application methods of detection powder used for detecting concentration of chloride in water Download PDFInfo
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- CN104345041A CN104345041A CN201410144650.3A CN201410144650A CN104345041A CN 104345041 A CN104345041 A CN 104345041A CN 201410144650 A CN201410144650 A CN 201410144650A CN 104345041 A CN104345041 A CN 104345041A
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Abstract
The invention discloses preparation and application methods of detection powder used for detecting the concentration of chloride in water and relates to a technique applied to quick and quantitative detection of the content of chloride in natural water. The chloride detection powder is prepared by mixing mercuric thiocyanate, beta-cyclodextrin, potassium hydrogen sulfate, ferric ammonium sulfate dodecahydrate, polyvinylpyrrolidone and sodium sulfate according to a ratio. The application method of the detection powder comprises the following steps: adding 0.15-0.4g of the chloride detection powder into 5ml of a water sample, shaking until the chloride detection powder is dissolved, and measuring by a spectrophotometer or a chromometer after 10-20 minutes to obtain the content of chloride in the sample. The chloride detection powder has the characteristics that the reaction is quick and sensitive, the chloride ion detection range is 0.2-8mg/L, the chloride detection powder is suitable for detecting the content of chloride in various water bodies, the chloride detection powder is stable in performance and convenient to take and use; and the chloride detection powder can be operated by nonspecialists.
Description
Technical field
The present invention relates to the method for preparation and use that a kind of water quality chloride detects powder, belong to technical field of analysis and detection.
Background technology
Chlorion is the negative ion be harmful to thermal power plant and nuclear power station Water vapour images, serious corrosive attack is had to water distribution system during chloride ion content height, chloride in steam can make blade on steam turbine and nozzle surface generation spot corrosion, and in Power Plant Water Vapor system, chloride ion content receives strict control and detection.In many large enterprises, the detection of chlorion is all absolutely necessary, and chloride ion content is the leading indicator evaluating boiler feed water, Lu Shui, recirculated cooling water.The enterprises such as metallurgy, chemical fertilizer, fiber and petrochemical complex are in the operation of its heat power equipment and organic manufacturing process, and the adjustment of height to the stability of producing, production process parameters of chloride ion content is all vital.The chlorion of excessive concentrations also can cause buildings to corrode, make that drinking-water hardship is salty, salting of soil, cause plant growth difficulty, and be detrimental to health, many process waters and irrigation water have all done certain restriction to chloride ion content, and some areas standard has made relevant regulations to wastewater chlorination thing.
Chlorion is an important indicator of water quality detection, and at present, the detection method that chlorion is conventional mainly contains volumetric method, nephelometry, spectrophotometric method, the chromatography of ions etc.Guan Rui etc. have studied the stability of silver nitride precipitation in gelatin ethanol water, establish trace chlorine spectrophotometric determination method (Guan Rui, Li Chang, Song Wei, the research and apply of spectrophotometry trace chlorine,
chemical Standardization and quality supervision, 2000, (3): 7-9), chlorion is in good linear within the scope of 0 ~ 6mg/L, and detectability 0.013mg/L, the recovery is 101% ~ 105%, for chloride ion conductor in organic process water.In acid condition, chlorion and mercuric thiocyanate react and generate mercuric chloride complex compound, the thiocyanate radical discharged and iron (III) react and generate red complex, thereby establish trace chlorine method (Gu Ligong in water by Spectrophotometry, trace chlorine in mercuric thiocyanate-ferric nitrate indirect Determination water
jiangsu health care, 2005, (1): 18), chloride ion content is good linear relation within the scope of 0.2 ~ 10mg/L, the recovery 95.8% ~ 102%.Be the stabilizing agent of AgCl turbidity in an acidic solution with polysorbate60, can be used for determination of chloride ion in Boiler Water of Power Plant, the range of linearity 0 ~ 8mg/L chlorion, the recovery 87.75% ~ 103%(Chen Zhenhua, spring Sheep's-parsley, the research of trace chlorine in Nephelometric Determination Boiler Water of Power Plant, North China power technology, 2003, (2): 7 ~ 8).Zhang Xinshen etc. utilize ion chromatograph to measure the chlorion in waste leather-making liquid sewage, the range of linearity 0.01 ~ 1 mM, and the chlorion recovery 98.6% ~ 102.5%(opens new Shen, Zheng Xiaomei, Chen Ziyang, ion-chromatographic determination chloride ion content, leather technology, 1998, (9): 14-16).Zhu Ziping adopts chlorion in sulfate by ion chromatography emulsion, its mark-on average recovery rate 95% ~ 105%(Zhu Ziping, the chlorion in ion-chromatographic determination emulsion, analytical instrument, 2004, (4): 32-34).Develop outdoor onsite application simple, fast and effectively determination of chloride ions be very important.
Summary of the invention
The object of this invention is to provide and be a kind ofly suitable for the pulvis that in the day water, underground water, tap water, potable water, life and process water, chloride content detects fast.
In order to achieve the above object, the present invention is based on the development of mercuric thiocyanate development process, this detection powder is made up of mercuric thiocyanate, Monoammonium ferric sulfate dodecahydrate, potassium acid sulfate, beta cyclodextrin etc., and concrete preparation method is as follows:
3:10:100:50:30:50 takes mercuric thiocyanate in mass ratio, beta cyclodextrin, sodium sulphate, potassium acid sulfate, Monoammonium ferric sulfate dodecahydrate, polyvinylpyrrolidone are each some, first beta cyclodextrin is mixed with mercuric thiocyanate, after dripping the grinding evenly of a small amount of water, dry 1 hour under 50 degree of constant temperature, mix with potassium acid sulfate, Monoammonium ferric sulfate dodecahydrate, polyvinylpyrrolidone again
Above-mentioned chemical reagent used: mercuric thiocyanate, beta cyclodextrin, potassium acid sulfate, Monoammonium ferric sulfate dodecahydrate, polyvinylpyrrolidone are analysis pure chemicals.
The using method that chloride detects powder is: in 5ml water sample, adds chloride and detects powder 0.15 ~ 0.4g, after shake to dissolving, places 10 ~ 20min, utilizes spectrophotometer or tintmeter to measure, obtain chloride concentration in sample.
Chloride of the present invention detects powder advantage: (1) reacts quick, sensitive, sensing range: 0.2 ~ 8mg/L chlorion, is suitable for the detection of chloride content in various water bodies.(2) have stable performance, portably use the features such as convenient, layman can operate.
Embodiment
embodiment 1chloride detects the preparation of powder
Weigh 1g beta cyclodextrin respectively to mix with 0.3g mercuric thiocyanate, drip 5 distilled water grindings evenly, dry 1h for 50 degree, after being ground into fine powder, mix with 10g sodium sulphate, 5g potassium acid sulfate, 3g Monoammonium ferric sulfate dodecahydrate, 5g polyvinylpyrrolidone, pulverize, obtain chloride and detect powder.
embodiment 2in underground water, chloride concentration measures
Get 1ml underground water in 5ml color comparison tube, adding distil water is diluted to 5ml, the chloride adding above-mentioned preparation detects powder 0.3g, shake color comparison tube dissolves to detecting powder, place 10min, measure the absorbance of solution with 722 type spectrophotometers at 480nm place, calculating chloride concentration in underground water is 16.8mg/L, consistent with sulfate by ion chromatography result 17.5mg/L, show that this chloride detects powder accurately, reliably.
Claims (3)
1. the preparation for the detection powder of water quality chloride concentration mensuration and using method, it is characterized in that, be mixed into chloride in proportion by solid powder such as mercuric thiocyanate, beta cyclodextrin, potassium acid sulfate, Monoammonium ferric sulfate dodecahydrate, polyvinylpyrrolidone, sodium sulphate and detect powder, during use, chloride being detected powder is dissolved in water sample, records chloride concentration by coherent detection instrument.
2. the preparation method of a kind of detection powder for water quality chloride concentration mensuration according to claim 1, it is characterized in that, 3:10:100:50:30:50 takes mercuric thiocyanate in mass ratio, beta cyclodextrin, sodium sulphate, potassium acid sulfate, Monoammonium ferric sulfate dodecahydrate, polyvinylpyrrolidone are each some, first beta cyclodextrin is mixed with mercuric thiocyanate, after dripping the grinding evenly of a small amount of water, dry 1 hour under 50 degree of constant temperature, mix with potassium acid sulfate, Monoammonium ferric sulfate dodecahydrate, polyvinylpyrrolidone again
Above-mentioned chemical reagent used: mercuric thiocyanate, beta cyclodextrin, potassium acid sulfate, Monoammonium ferric sulfate dodecahydrate, polyvinylpyrrolidone are analysis pure chemicals.
3. the using method of a kind of detection powder for water quality chloride concentration mensuration according to claim 1, it is characterized in that, in 5ml water sample, add chloride and detect powder 0.15 ~ 0.4g, after shake to dissolving, place 10 ~ 20 minutes, utilize spectrophotometer or tintmeter to measure, obtain chloride concentration in sample
Water sample described above refers to the day water, underground water, tap water, potable water, life and process water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410144650.3A CN104345041A (en) | 2014-04-11 | 2014-04-11 | Preparation and application methods of detection powder used for detecting concentration of chloride in water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931432A (en) * | 2015-06-30 | 2015-09-23 | 苏州东辰林达检测技术有限公司 | Carbon oxysulfide detection reagent and preparation method thereof |
| CN108072622A (en) * | 2017-12-29 | 2018-05-25 | 新津海天水务有限公司 | Chlorion rapid detection method in a kind of tap water |
-
2014
- 2014-04-11 CN CN201410144650.3A patent/CN104345041A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931432A (en) * | 2015-06-30 | 2015-09-23 | 苏州东辰林达检测技术有限公司 | Carbon oxysulfide detection reagent and preparation method thereof |
| CN108072622A (en) * | 2017-12-29 | 2018-05-25 | 新津海天水务有限公司 | Chlorion rapid detection method in a kind of tap water |
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Application publication date: 20150211 |