Rapid detection method for inductively coupled plasma atomic emission spectrometry simultaneously determining lead and cadmium content in coupernick

Abstract

The invention discloses a rapid detection method for simultaneous determination of lead and cadmium content in coupernick, and belongs to the field of detection conducted by means of inductively coupled plasma spectrometer. The method is used for rapid detection of the lead and cadmium content in the coupernick in products such as electronics, bags and imitation ornaments. By determining the source of unknown spectral interference in the coupernick, an interference correction coefficient method is adopted for correcting results, so that the requirement of not exceeding the limit is met. Accordingly, the interference is corrected, the accuracy is improved, operation is easy and efficient, and the detection cycle is shortened.

Description

technical field [0001] The invention relates to a method for simultaneously measuring the contents of lead and cadmium elements in magnet alloy products, and belongs to the field of detection using inductively coupled plasma spectrometers. Background technique [0002] Lead and cadmium are heavy metal elements with significant biological toxicity. They can be enriched by hundreds of times under the biomagnification of the food chain, and finally enter the human body. Heavy metals can strongly interact with proteins and enzymes in the human body, making them inactive, and may also accumulate in certain organs of the human body, causing chronic poisoning. At present, EU RoHS requires that the lead content shall not exceed 1000mg / kg, and the cadmium content shall not exceed 100mg / kg. The (EU) 2015 / 628 law requires that the lead content of all parts and accessible parts of products that can be placed in children's mouths shall not exceed 500mg / kg. kg; Domestic RoHS and the mand...

AI Technical Summary

Problems solved by technology

The results of the lead content in the magnet obtained by the first three methods are quite different from those obtained by atomic absorption spectrometry, and often need to be further determined by atomic absorption spectrometry; the matrix matching method needs to use X-ray fluorescence spectrometer to determine the composition first, and prepare the standard solution of the corresponding matrix For detection, the composition and content of different magnets are different, and it is difficult to fix a matrix composition method for matching

Therefore, when using existing methods for detection, it will increase the detection cost, reduce the detection efficiency, prolong the detection cycle, and increase the time cost of enterprise trade.

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