Wang Dong-Mei, Feng Jie, Qin Fu-Jing, Mo Yi-Sheng
The Third Affiliated Hospital of Guangxi Medical University, Nanning 530031, China.
Zhong Yao Cai. 2012 Mar;35(3):366-8.
To determine the contents of six heavy metal elements in traditional Chinese medicine of Zanthoxylum nitidum in twelve habitats by ICP-AES.
Nitric acid- perchloric acid mixed acid digested system was used to completely decomposed the organic compounds effectually. The As, Cr, Hg, Ni, Cd and Pb were determined by the absorption spectroscopy under set up working conditions.
An efficient, simple and accurate method was established. The recoveries were 90.82%-101.21% and RSDs were within 3.0%.
The contents of six heavy metal elements are different in Zanthoxylum nitidum from different habitats. As, Cr and Hg were not detected. The content of Pb which from eleven habitats is consistent with the standards of medicine and export except from Nanning habitats, meanwhile the content of Cd all exceeds those standards.
采用电感耦合等离子体发射光谱法（ICP - AES）测定12个产地的中药两面针中6种重金属元素的含量。
采用硝酸 - 高氯酸混合酸消解体系有效地完全分解有机化合物。在设定的工作条件下，通过吸收光谱法测定砷、铬、汞、镍、镉和铅。
建立了一种高效、简便、准确的方法。回收率为90.82% - 101.21%，相对标准偏差在3.0%以内。
不同产地的两面针中6种重金属元素的含量不同。未检测到砷、铬和汞。除南宁产地外，其他11个产地的铅含量符合药品和出口标准，而镉含量均超过这些标准。
