CN101865854B - Reagent for quickly determining copper concentration in water and use method thereof - Google Patents
Reagent for quickly determining copper concentration in water and use method thereof Download PDFInfo
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- CN101865854B CN101865854B CN2010101987385A CN201010198738A CN101865854B CN 101865854 B CN101865854 B CN 101865854B CN 2010101987385 A CN2010101987385 A CN 2010101987385A CN 201010198738 A CN201010198738 A CN 201010198738A CN 101865854 B CN101865854 B CN 101865854B
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Abstract
The invention discloses a reagent for quickly determining copper concentration in water and a use method thereof, which relate to the reagent for determining copper concentration in water and a use method of the reagent. The reagent for quickly determining copper concentration in water comprises the following components in percentage by mass: 3 to 27.5 percent of anhydrous sodium hydrogen phosphate, 2 to 33 percent of anhydrous sodium dihydrogen phosphate, 25 to 50 percent of hydroxylamine hydrochloride, 1 to 2 percent of 2,2'- biquinoline -4,4'- dicarboxylic acid disodium salt, and 18.5 to 38 percent of anhydrous sodium sulphate. The use method of the reagent for quickly determining the copper concentration in water comprises the following steps: adding the reagent for quickly determining the copper concentration in water into a water sample to be tested, staying still for 2min, comparing the color with a standard colorimetric card or a colorimetric disc, and reading the copper concentration. The invention has the advantages of convenient operation, accurate results, low prices, convenient transportation and carrying, applicability of on-site determination and the like.
Description
[technical field]
The present invention relates to a kind of using method of measuring reagent and this reagent of copper ion concentration in the water.
[background technology]
Copper is the very wide trace element of a kind of distribution, but when copper content is greater than 0.01mg/L in the water, the self-purification of water is had the obvious suppression effect.Copper is very big to hydrobiont toxicity, it is generally acknowledged that the water body cupric is unsafe greater than 0.01mg/L to fish.Copper is relevant with its form in water body to hydrobiological toxicity, and the toxicity of free copper ion is more much bigger than complex state copper.Copper sulphate is 0.6mg/L to the critical harm concentration of paddy rice in the irrigation water.In the world wide, the average cupric 3 μ g/L of fresh water, the average cupric 0.25 μ g/L of seawater.The main pollution source of copper has the copper-containing wastewater of department's dischargings such as plating, smelting, five metals, petrochemical complex and chemical industry.
The assay method of copper mainly contains atomic absorption method, anodic stripping voltammetry, oscilloscopic polarography, Imuthid extraction spectrophotometric method, new cuprous clever extraction spectrophotometric method etc.These methods need specific instrument such as atomic absorption spectrophotometer (AAS), polarographic analyze, spectrophotometer etc.When using Imuthid extraction spectrophotometric method, new cuprous clever extraction spectrophotometric method, sample such as need extract at operation, and extractant is an organic solvent, and environment, operating personnel are had certain influence.
[summary of the invention]
The objective of the invention is to propose a kind of easy operation, make things convenient for accumulating, measurement result is accurate, and is cheap, and is suitable for reagent for quickly determining copper concentration in the water of fast-field evaluation.
The present invention also provides a kind of using method of mentioned reagent.
The object of the present invention is achieved like this:
Reagent for quickly determining copper concentration in the water of the present invention, component by following quality percentage composition is formed: ADSP 3%-27.5%, AMSP 2%-33%, oxammonium hydrochloride 25%-50%, 2,2 '-diquinoline-4,4 '-dioctyl phthalate disodium (BCA) 1%-2%, anhydrous sodium sulfate 18.5%-38%.
Wherein, preferably form by the component of following quality percentage composition: ADSP 16.95%, AMSP 16.5%, oxammonium hydrochloride 50%, 2,2 '-diquinoline-4, (BCAO 1.2%, anhydrous sodium sulfate 15.35% for 4 '-dioctyl phthalate disodium.
Reagent for quickly determining copper concentration in the preferred water, its contained all components all can pass through 80 mesh standard sieves.
Reagent for quickly determining copper concentration is 0.2g in the most preferred water.
The using method of reagent for quickly determining copper concentration in the above-mentioned water comprises: reagent for quickly determining copper concentration in the above-mentioned water is added in the water sample to be measured, leave standstill 2 minutes after, with standard color comparison card or colorimetric disc colorimetric, the concentration of reading copper.
Wherein, if cupric then show purple in the water, and the depth of purple is directly proportional with the concentration of copper in the water, therefore can be by the concentration of reading copper with standard color comparison card or colorimetric disc colorimetric.
The present invention adopts the total solids pack, avoided national standard method need dispose reagent and standard solution, shortcomings such as the reagent shelf-life is of short duration, and this law need not extraction, is used for the fast measuring of potable water, surface water and industrial waste water copper concentration, has easy and simple to handle, the result is accurate, low price is convenient to transportation and is carried, and is fit to advantages such as on-site measurement.
Use mensuration reagent of the present invention and standard method Imuthid extraction spectrophotometric method (GB/T5750.6-2006) bioassay standard sample respectively, replicate determination is 5 times continuously, the results are shown in Table 1.The result shows that this law and standard method be basically identical as a result, shows that this law accurately and reliably.
The test result of table 1 standard model
With this law certain Electroplate Factory is intended the test of copper concentration in the discharge water water sample, and carry out the experiment of recovery of standard addition, the results are shown in Table 2.
Table 2 sample measurement result and recovery of standard addition
| Sample | Background quality (μ g) | Mark-on quality (μ g) | Quality behind the mark-on (μ g) | Recovery of standard addition (%) |
| 1 | 5.37 | 5.00 | 10.25 | 97.6 |
| 2 | 5.13 | 5.00 | 10.11 | 99.6 |
It is 1.0mg/L that the maximum of the middle copper of drinking water sanitary standard (GB5749-2006) is limited the quantity of, and the highest permission discharge capacity of copper is respectively 0.4,1.0,2.0mg/L in the integrated wastewater discharge standard (GB8978-1996).This law measurement range is 0.2～6.0mg/L, and preferred 0.2g can satisfy test request in most cases.
When water sample pH＜4, can interference measurement, acidity is too high, precipitation then can occur, adds NaOH this moment or potassium hydroxide solution constantly shakes up to resolution of precipitate simultaneously.
In water sample, there is silver ion (5mg/L) to exist, drips 0.5mL left and right sides saturated potassium chloride solution, cross leaching filtrate then and carry out water determination.
The existence of ferric iron (5mg/L) also can cause interference, and ferric iron can drip reductive agent (oxammonium hydrochloride 100g/L) thereby be reduced into the ferrous mensuration that do not influence.
[embodiment]
Embodiment one
1, prepares ADSP 16.95g, AMSP 16.5g, oxammonium hydrochloride 50g, BCA1.2g, anhydrous sodium sulfate 15.35g adds above-mentioned starting material in the glass mortar, fully is ground to whole starting material and can passes through 80 mesh standard sieves, be distributed into every bag 0.2g then, become reagent for quickly determining copper concentration in the water;
2, reagent for quickly determining copper concentration in the water is added in the water sample to be measured, leave standstill 2 minutes after, with standard color comparison card or colorimetric disc colorimetric, the concentration of reading copper.
Embodiment two
1, prepares ADSP 5g, AMSP 33g, oxammonium hydrochloride 25g, BCA1g, anhydrous sodium sulfate 38g adds above-mentioned starting material in the glass mortar, fully is ground to whole starting material and can passes through 80 mesh standard sieves, be distributed into every bag 0.2g then, become reagent for quickly determining copper concentration in the water;
2, reagent for quickly determining copper concentration in the water is added in the water sample to be measured, leave standstill 2 minutes after, with standard color comparison card or colorimetric disc or colorimetric, the concentration of reading copper.
Embodiment three
1, prepares ADSP 27.5g, AMSP 2g, oxammonium hydrochloride 50g, BCA2g, anhydrous sodium sulfate 18.5g adds above-mentioned starting material in the glass mortar, fully is ground to whole starting material and can passes through 80 mesh standard sieves, be distributed into every bag 0.2g then, become reagent for quickly determining copper concentration in the water;
2, reagent for quickly determining copper concentration in the water is added in the water sample to be measured, leave standstill 2 minutes after, with standard color comparison card or colorimetric disc or colorimetric, the concentration of reading copper.
Claims (4)
1. copper concentration determination reagent in the water, it is characterized in that its component by following quality percentage composition forms: ADSP 3%-27.5%, AMSP 2%-33%, oxammonium hydrochloride 25%-50%, 2,2 '-diquinoline-4,4 '-dioctyl phthalate disodium 1%-2%, anhydrous sodium sulfate 18.5%-38%.
2. copper concentration determination reagent in the water as claimed in claim 1 is characterized in that all components wherein all can pass through 80 mesh standard sieves.
3. copper concentration determination reagent in the water as claimed in claim 1 or 2 is characterized in that copper concentration determination reagent is 0.2g in the described water.
4. the using method of copper concentration determination reagent in the water as claimed in claim 1 is characterized in that copper concentration determination reagent in the described water is added in the water sample to be measured, leave standstill 2 minutes after, with standard color comparison card or colorimetric disc colorimetric, the concentration of reading copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101987385A CN101865854B (en) | 2010-06-04 | 2010-06-04 | Reagent for quickly determining copper concentration in water and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101987385A CN101865854B (en) | 2010-06-04 | 2010-06-04 | Reagent for quickly determining copper concentration in water and use method thereof |
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| Publication Number | Publication Date |
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| CN101865854A CN101865854A (en) | 2010-10-20 |
| CN101865854B true CN101865854B (en) | 2011-08-31 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105527235B (en) * | 2015-12-30 | 2018-04-17 | 汕头大学医学院 | A kind of method of liquid-liquid extraction GFAAS methods measure monovalence copper content |
| CN106501193B (en) * | 2016-10-08 | 2019-07-16 | 中国农业大学 | A kind of kit measuring content of copper ion |
| CN106501238B (en) * | 2016-10-17 | 2019-05-21 | 阳谷祥光铜业有限公司 | The detection method of copper object phase in a kind of flash smelting furnace copper ashes |
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| US7378281B2 (en) * | 2002-03-08 | 2008-05-27 | The United States Of America As Represented By The Secretary Of The Navy | Process to measure PPB levels of dissolved copper in jet fuels and other non-aqueous fluids using a colorimetric process |
| CN1189737C (en) * | 2003-03-14 | 2005-02-16 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Copper detecting paper and preparing method thereof |
| CN101398385A (en) * | 2007-09-29 | 2009-04-01 | 中国科学院沈阳应用生态研究所 | Reagent for detecting copper in water and method for preparing same |
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