Determination of the Contents of Heavy Metals in 8 Chinese Crude Drugs by UV Spectrophotometry
- VernacularTitle:紫外分光光度法测定8种中药材中重金属的含量
- Author:
Yaqin TIAN
;
Teng XU
;
Guomei ZHANG
- Publication Type:Journal Article
- Keywords:
Chinese crude drugs;
Heavy metal;
UV spectrophotometry;
Detection
- From:
China Pharmacy
2007;0(33):-
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To determine the contents of heavy metals in commercial Chinese crude drugs and to provide reference for the monitoring of heavy metals in the crude drugs.METHODS:UV spectrophotometry was established to determine the contents of heavy metals in 6 vegetable drugs(Panax quinquefolium,Panax ginseng,Lycium barbarum,Radix et Rhizoma Glycyrrhizae,Bulbus Fritillariae Cirrhosae and Salvia miltiorrhiza)and 2 animal-source drugs(Scolopendra subspinipes mutilans and Bombyx Batryticatus).RESULTS:The linear range of heavy metal plumbum(reference substance)was 0.01～0.50 ?g?mL-1(r=0.997 7),and the average recovery rate was 99.49%(RSD=1.41%).The contents of heavy metals in Panax quinquefolium,Panax ginseng,Lycium barbarum,Radix et Rhizoma Glycyrrhizae,Bulbus Fritillariae Cirrhosae,Salvia miltiorrhiza were 26.13,28.96,26.99,29.98,26.63 and 28.06 ?g?g-1 respectively,and the contents of Scolopendra subspinipes mutilans and Bombyx Batryticatus were on the high side(47.62 and 59.24 ?g?g-1 respectively).CONCLUSION:The method is easy,highly accurate,and it can be used for detection of heavy metals in Chinese crude drugs.
