Determination of Five Heavy Metals and Harmful Elements in Freeze-dried Rehmannia from Different Habitats
- VernacularTitle:不同产地冻干地黄中5种重金属及有害元素的含量测定
- Author:
Min LI
;
Shurong ZHANG
;
Jianwen ZHANG
- Publication Type:Journal Article
- Keywords:
FAAS;
Double channels AFS;
Harmful elements;
Heavy metals
- From:
China Pharmacist
2015;18(10):1788-1790
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the content of Pb, Cd, Cu, As and Hg in freeze-dried Rehmannia from different habitats by FAAS and double channels AFS. Methods:The contents of Pb,Cd and Cu in Rehmannia from different habitats were directly deter-mined by FAAS, while the contents of As and Hg were determined by double channels AFS after pretreated with HNO3-HClO4 . Re-sults:It was shown that each element had good linear relationship with the correlation coefficient above 0. 997 4. The average recovery was 97. 88%-100. 90% with RSD of 0. 019% -4. 20% (n=6). Meanwhile, the concentrations of 5 harmful elements and heavy met-als in 4 batches of 10 samples were higher than the limits described in Chinese pharmacopoeia. Conclusion:The results measured by the method are considered to be accurate, quick and easy to be operated. It can be used to determine heavy metals and harmful ele-ments in freeze-dried Rehmannia from different habitats.
