Comparative Research of Two Pretreatment Methods on Determination of Trace Manganese in Panax Pseudo-Ginseng Var. Notoginseng by Atomic Absorption Spectroscopy

Author:

Yang Jin1,Liu Wei1,Wang Bao Sheng1,Li Qing Hua2,Yi Ping1,Huang Du Shu1,Min Yong1

Affiliation:

1. Honghe University

2. Honghe Prefecture Center for Disease Control and Prevention

Abstract

In this research the atomic absorption spectroscopy method (the correlation coefficient was 0.9995) was employed for determination of the content of heavy metal-manganese in panax pseudo-ginseng var. notoginseng, which was chosen as the sample. The optimum conditions of two pretreatments were researched independently. In the dry ashing, the optimized temperature and time are 600°C and 4~6 hours respectively, and the manganese content determined is 53.16 ug/g and the recovery rate of manganese added in sample is 98.64%. In the wet digestion, The HNO3-H2O2 digestion system is the best one, and the content was 52.95ug/g and the recovery rate is 97.30%. So the two pretreatment methods of the sample are accurate enough on manganese content determination. But the dry ashing is better than the wet digestion relatively.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

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5. B.S. Wang, H.L. Bei, H. Zhang, et al. In: Northern Horticulture, 2011, P. 181-182.

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