Method for detecting multiple heavy metal elements simultaneously

Abstract

The method of detecting multiple heavy metal elements simultaneously is one combined ion selecting electrode and leaching voltage-current method. In the detecting system, the electrode combination of several selecting electrodes, reference electrodes and working electrodes is adopted. For practical solution with several kinds of heavy metal elements in wide dynamic content range, the selecting ion electrodes are first used to detect heavy metals in high content, and leaching voltage-current method is then adopted. The present invention has simple sample processing program, is suitable for automatic measurement, and may be used in various fields.

Description

Technical field [0001] The invention relates to a method for simultaneous detection of multiple heavy metal elements. Background technique [0002] Heavy metal ions (such as Zn 2+ , Pb 2+ 、Cd 2+ 、Cu 2+ 、Cr 6+ , Mn 5+ 、As 3+ , Fe 3+ , Hg 2+ ) can have harmful or even fatal effects on the human body, so the quantitative detection of heavy metals is of great significance in medicine, food, clinical and environmental monitoring. Because the dynamic range of the heavy metal content contained in the solution sample collected in different fields is very wide, even in the same field, the dynamic range of the heavy metal content contained in the solution sampled at different times and different places is also inconsistent, which gives the actual The detection technology has brought great difficulties. At present, the dynamic range of many methods and instruments for detecting heavy metals is relatively small. If the heavy metal content is too high, the sample needs to be dil...

AI Technical Summary

Problems solved by technology

Because the dynamic range of the heavy metal content contained in the solution sample collected in different fields is very wide, even in the same field, the dynamic range of the heavy metal content contained in the solution sampled at different times and different places is also inconsistent, which gives the actual The detection technology has brought great difficulties. At present, the dynamic range of many methods and instruments for detecting heavy metals is relatively small. If the heavy metal content is too high, the sample needs to be diluted, or even repeatedly diluted, which brings a lot of inconvenience to the automatic measurement.

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