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Method for determining content of copper in copper electrolyte

A technology of copper electrolyte and determination method, which is applied in the direction of chemical analysis by titration method, can solve the problems of long sample processing time, large deviation of results, high salt content, etc., and achieve accurate and reliable analysis results, short measurement time and simple operation Effect

Inactive Publication Date: 2014-12-10
中条山有色金属集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method takes a long time
[0005] The analysis and determination method adopts instrumental analysis. The disadvantages of this method are that the step-by-step dilution factor is large, and the result deviation is large. At the same time, the salt content in the liquid is high, and the loss of the instrument is also large;
[0006] The analysis is carried out by three-acid digestion-iodometric method, which consumes hydrochloric acid, nitric acid, and sulfuric acid, and the sample processing time is long, the cost is high, and it is time-consuming and laborious

Method used

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  • Method for determining content of copper in copper electrolyte

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Effect test

Embodiment 1

[0018] The assay method of copper content in a kind of copper electrolyte of the present embodiment comprises the following steps:

[0019] 1) Take 2mL of copper electrolyte in a 300mL beaker;

[0020] 2) Neutralize with 2mL of ammonia water until iron is completely precipitated;

[0021] 3) Add 1g of ammonium bifluoride to cover the iron, add 2g of potassium iodide, and titrate with a sodium thiosulfate standard solution with a concentration of 0.003126g / mL, and calculate the copper content w according to the concentration and consumption volume of the sodium thiosulfate standard solution Cu .

Embodiment 2

[0023] The assay method of copper content in a kind of copper electrolyte of the present embodiment comprises the following steps:

[0024] 1) Take 5mL of copper electrolyte in a 300mL beaker;

[0025] 2) Neutralize with 5mL of ammonia water until the iron is completely precipitated;

[0026] 3) Add 2g of ammonium bifluoride to cover iron, add 3g of potassium iodide, and titrate with a sodium thiosulfate standard solution with a concentration of 0.003126g / mL, and calculate the copper content w according to the concentration and consumption volume of the sodium thiosulfate standard solution Cu .

Embodiment 3

[0028] The assay method of copper content in a kind of copper electrolyte of the present embodiment comprises the following steps:

[0029] 1) Take 3mL of copper electrolyte in a 300mL beaker;

[0030] 2) Neutralize with 3mL of ammonia water until the iron is completely precipitated;

[0031] 3) add 1.5g ammonium bifluoride to cover iron again, add 2.5g potassium iodide, be that the sodium thiosulfate standard solution of 0.003126g / mL is titrated with concentration, calculate copper content w according to the concentration and consumption volume of sodium thiosulfate standard solution Cu .

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Abstract

The invention belongs to a measuring method and particularly relates to a method for determining the content of copper in copper electrolyte. According to the technical scheme, the method comprises the following steps: adding the copper electrolyte into a flask; neutralizing the copper electrolyte by virtue of ammonium hydroxide until ferrum completely settles; adding ammonium bifluoride to mask ferrum, adding potassium iodide, and carrying out titration by virtue of a 0.003126g / mL sodium thiosulfate standard solution, thereby determining the content of copper. The method has the advantages of low cost, short determination time, time saving and labor saving properties and accurate and reliable analysis result and the like and is simple to operate.

Description

technical field [0001] The invention belongs to a measuring method, in particular to a measuring method for copper content in a copper electrolyte. Background technique [0002] The copper content in the copper electrolyte is relatively high, and the analysis and determination methods mainly include: atomic absorption spectrometry, triacid digestion-iodometric method. [0003] Atomic absorption spectrometry operating procedures: pipette 2mL of electrolyte solution into a 100mL volumetric flask, add 5mL of concentrated nitric acid, dilute to the mark with distilled water, shake well, pipette 2mL of liquid into a 500mL volumetric flask, add 25mL of concentrated nitric acid, Dilute to the mark and shake well to be tested. Turn on the computer, enter the program, turn on the lamp of the element to be measured, preheat the lamp for 15 minutes, turn on the instrument, air compressor and fan, then open the acetylene gas valve, put the straw into deionized water to ignite and adjus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16
Inventor 张光华马丽君樊兰菊
Owner 中条山有色金属集团有限公司
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