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

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.

• Periodical: Advanced Materials Research (Volumes 554-556)
• Pages: 2064-2067
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.554-556.2064
• Online since: July 2012
• Authors: Jin Yang, Wei Liu, Bao Sheng Wang, Qing Hua Li, Ping Yi, Du Shu Huang, Yong Min
• Keywords: Atomic Absorption Spectroscopy, Dry Ashing, Manganese, Panax Pseudo-Ginseng Var. Notoginseng, Pretreatment, Wet Digestion

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