Determination of U, Th and Tl in Fourteen Chinese Traditional Medicines by Microwave Digestion-ICP-MS
Fourteen Chinese traditional medicines were digested by microwave digestion, which are generally applied to treat tumor in clinic, and the contents of U, Th and Tl in the fourteen Chinese traditional medicines were determined by inductively coupled plasma mass spectrometry (ICP-MS),
and the results show that the change ranges of the elements contents were: 0.005 153-0.153 4 μg·g-1 for U;0.035 01-0.462 8 μg·g-1 for Th;0.001 43-1.600 μg·g-1 for Tl. The contents of U, Th and Tl in the fourteen Chinese traditional
medicines were low, and not with one accord. The determination results of the fourteen Chinese traditional medicines were analyzed by SPSS 11.5, and the results show that there were not significant deviations(p0.05) of the contents of U, Th and Tl between the medicine of treating the
toxifying disease with poisonous agents and the medicines of heat-clearing. The study indicates that inductively coupled plasma mass spectrometry (ICP-MS) is a quick, accurate, sensitive method to determine the contents of U, Th and Tl in Chinese traditional medicine, and the results of this
study provide reference data for using Chinese traditional medicine safely in clinic and developing Chinese traditional medicine.
Keywords: Chinese traditional medicine; Inductively coupled plasma mass spectrometry; Th; Tl; U
Document Type: Research Article
Affiliations: Technical Center, Liaoning Administration for Entry Exit Inspection and Quarantine, Dalian 116000, China
Publication date: 01 January 2009
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