Method for detecting concentration of impurity elements in zinc sulfate liquid

Abstract

The invention discloses a method for detecting the concentration of impurity elements in zinc sulfate liquid. The method includes the steps: detecting emission intensity of different impurity elements in standard samples at detection wavelengths of the impurity elements by the aid of an inductively coupled plasma atomic emission spectrometer, and building standard working curves between the concentration and the emission intensity of various impurity elements according to detection results; detecting emission intensity of various impurity elements in zinc sulfate liquid to be detected at detection wavelengths of the impurity elements by the aid of the inductively coupled plasma atomic emission spectrometer, and calculating the concentration of the impurity elements according to detected emission intensity and the standard working curves. According to the method, samples are taken once, multiple elements can be simultaneously detected, and the workload of a traditional chemical method can be greatly reduced. The method has wide detecting ranges, and on-line detection of the zinc sulfate liquid in wet zinc smelting process can be basically met. According to the method, treatment of waste liquid is conveniently analyzes, and hazards to occupational health of analysts are reduced.

Description

technical field [0001] The invention relates to the detection field, in particular to a method for detecting the concentration of impurity elements in zinc sulfate liquid. Background technique [0002] During the wet zinc smelting process, the level of impurities in the zinc sulfate liquid directly affects the power consumption and the output of zinc flakes. Accurate and timely provision of high-quality testing services for the production system can better guide production. There are two commonly used methods for the determination of impurity content in zinc sulfate liquid in traditional zinc hydrometallurgy: spectrophotometry and oscillographic polarography. In the traditional analysis mode, there are the following problems: First, most of the analytical elements (such as Fe, Co, Cu, Cd, etc.) Second, factors such as complex analysis process, high labor intensity, and high requirements for analysis timeliness affect the stability of the analysis data, which is not conduciv...

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a detection method for the concentration of impurity elements in zinc sulfate liquid, aiming to solve the problems of long detection time and high labor intensity in the detection method of the prior art.

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