Wong M K, Tan P, Wee Y C
Department of Chemistry, National University of Singapore.
Biol Trace Elem Res. 1993 Feb;36(2):135-42. doi: 10.1007/BF02783172.
The concentrations of nine heavy metals, cadmium, cobalt, copper, iron, manganese, nickel, lead, zinc, and mercury in 42 Chinese herbal medicinal plants were determined. Generally, all the samples studied had, relative to the other trace metals, higher concentrations of iron, manganese, and zinc. The concentration range of the metals determined was comparable to that in many of the East Asian vegetables and fruits. A few samples were found to contain relatively higher concentrations of the toxic metals such as cadmium, lead, and mercury. This was probably caused by contamination during air-drying and preservation.
测定了42种中国药用植物中镉、钴、铜、铁、锰、镍、铅、锌和汞9种重金属的含量。总体而言，相对于其他痕量金属，所有研究样本中铁、锰和锌的含量较高。所测定金属的浓度范围与许多东亚蔬菜和水果中的浓度范围相当。发现少数样本含有相对较高浓度的镉、铅和汞等有毒金属。这可能是由于风干和保存过程中的污染所致。
