微波消解/ICP-MS法测定川黄柏中微量重金属元素

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Abstract An inductively coupled plasma mass spectrometry (ICP-MS) for determination of the contents of 8 trace heavy metal elements in cortex phellodendri chinensis after microwave-assisted digestion of the sample has been developed. The accuracy of the method was evaluated by the analysis of corresponding trace heavy metal elements in standard reference materials (GBW 07604 and GBW 07605). By applying the proposed method, the contents of 8 trace heavy metal elements in cortex phellodendri chinensis cultivated in different areas (in Bazhong, Yibin and Yingjing, respectively) of Sichuan and different growth period (6, 8 and 10 years of samples from Yingjing) were determined. The relative standard deviation (RSD) is in the range of 3.2％-17.8％ and the recoveries of standard addition are in the range of 70％-120％. The results of the study indicate that the proposed method has the advantages of simplicity, speediness and sensitivity. It is suitable for the determination of the contents of 8 trace heavy metal elements in cortex phellodendri chinensis. The results also show that the concentrations of 4 harmful trace heavy metal elements As, Cd, Hg and Pb in cortex phellodendri chinensis are all lower than the limits of Chinese Pharmacopoeia and Green Trade Standard for Importing and Exporting Medicinal Plant and Preparation. Therefore, the cortex phellodendri chinensis is fit for use as medicine and export.

Key words：Cortex phellodendri chinensis;Trace element;Chinese traditional medicine;ICP-MS;Microwave-assisted digestion

Received: 2006-05-10 Accepted: 2006-08-20

ZTFLH:

O657.6

Corresponding Authors: KOU Xing-ming E-mail: kouxm@scu.edu.cn

Cite this article:

KOU Xing-ming,XU Min,GU Yong-zuo. Determination of Trace Heavy Metal Elements in Cortex Phellodendri Chinensis by ICP-MS after Microwave-Assisted Digestion [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(06): 1197-1200.

URL:

https://www.gpxygpfx.com/EN/Y2007/V27/I06/1197

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