Method for simultaneously measuring five heavy metal elements including arsenic, cadmium, copper, mercury and lead in artificial tiger bone meal

Abstract

The invention discloses a method for simultaneously measuring five heavy metal elements including arsenic, cadmium, copper, mercury and lead in artificial tiger bone meal. The method includes main steps of 1), digesting artificial tiger bone meal samples by the aid of nitric acid and hydrogen peroxide and sizing the artificial tiger bone meal samples by the aid of 2% nitric acid solution to obtain analysis to-be-measured sample solution; 2), selectively preparing serial mixed standard solution from As, Cd, Cu, Hg and Pb single-element standard solution by the aid of 2% nitric acid solution; 3), plotting standard curves; 4), measuring the analysis to-be-measured sample solution by the aid of ICP-AES (inductively coupled plasma-atomic emission spectrometry) spectrographs so as to obtain the contents of the five heavy metal elements in the samples according to the standard curves. The method has the advantages that reaction for digesting the samples is mild, and accordingly the samples are low in pollution and loss; the digestion time can be shortened, digested samples can be directly measured by the aid of ICP-AES processes, and accordingly the detection cycles of the samples can be shortened; the method is high in safety and good in accuracy and repeatability, and requirements on quickly measuring the heavy metal elements in the artificial tiger bone meal can be met.

Description

technical field [0001] The invention relates to a method for detecting heavy metal content of bone-enhancing medicine, in particular to a method for simultaneously measuring heavy metal content in artificial tiger bone powder by using inductively coupled plasma atomic emission spectrometry (ICP-AES), and belongs to the technical field of traditional Chinese medicine detection. Background technique [0002] Artificial tiger bone powder is a kind of bone-building medicine, which has bone-building effect and is used for the improvement of symptoms such as low back pain, soreness of the waist and knees, weakness of lower limbs, and difficulty in walking. In recent years, excessive heavy metal content has become the focus of drug safety and human health at home and abroad; the sources of heavy metals in traditional Chinese medicine mainly include growth environment, processing process and their own genetic characteristics; traditional atomic absorption spectroscopy is often used t...

AI Technical Summary

Problems solved by technology

[0004] ICP-AES has different technical characteristics compared with traditional detection methods based on dry and wet digestion methods, and there are few reports on its application in drug detection. Report on rapid and effective detection methods for five heavy metals including copper, mercury and lead

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