Preparation method of Yunnan pseudo-ginseng standard substance containing heavy metal

Abstract

The invention provides a preparation method of a Yunnan pseudo-ginseng standard substance containing heavy metal. The preparation method comprises the following steps: (1), performing baking; (2), performing preliminary grinding; (3), performing screening; (4), performing secondary grinding; (5), performing uniform mixing; (6), performing irradiation: carrying out irradiation sterilization on a Yunnan pseudo-ginseng heavy metal standard substance sample by adopting gamma rays generated by radioactive isotope cobalt-60 with the irradiation dose of 6kGy; and (7), performing sub-packaging and thelike. The Yunnan pseudo-ginseng standard substance candidate with good uniformity and containing heavy metal is prepared; the Yunnan pseudo-ginseng standard substance containing the heavy metal is prepared by checking the uniformity and the stability and using fixing values in multiple laboratories, so that the consistency of a standard curve matrix and a sample matrix is ensured to the greatestextent, the error interference caused by a matrix effect is reduced; and the method has the advantages of high uniformity and stability, accurate measurement value and simplicity in operation.

Description

technical field [0001] The invention relates to the technical field of preparation of matrix standard substances containing heavy metals, in particular to a preparation method of Yunnan notoginseng standard substances containing heavy metals. Background technique [0002] Notoginseng, recorded in the Pharmacopoeia as the dried root of Panax notoginseng (Burk.) F.H.Chen, a plant of Araliaceae, also known as: Jinbuhuan in Compendium of Materia Medica, is a traditional Chinese medicinal material, genuine medicinal material, and 40 kinds of bulk medicinal materials One, it has a history of more than 400 years of application, and has a long-standing reputation at home and abroad. Sanqi has been known as the "hemostatic medicine" since ancient times. Wenshan Prefecture in Yunnan Province is the origin and main producing area of ​​Panax notoginseng. Panax notoginseng is a characteristic economic crop in Yunnan Province. However, due to the prevalence of environmental factors, like ...

AI Technical Summary

Problems solved by technology

In the past, when detecting the content of heavy metals in Yunnan Panax notoginseng, single-standard standard solutions or mixed-standard standard solutions of different heavy metal elements with pure water as the matrix were mostly used to realize the evaluation of measurement methods and the quality control of measurement equipment. Effect interference will cause certain errors in the measurement results

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