[Determination of mercury content in yuhong ointment by wet catalytic digestion-atomic absorption spectrometry].
OBJECTIVE
To develop a method for determining the content of mercury contained in Yuhong ointment.


METHODS
The wet catalytic digestion method was adopted for the pretreatment, and the mercury content in Yuhong ointment was determined by hydride generation-atomic absorption spectrometry (HG-AAS).


RESULTS
The mercury showed a good linear relation in the range from 2 to 20 microg x L(-1), with the average recovery of 104.27% and RSD of 3.37%. The RSD for real sample repeated measurement was determined to be 8.4%. The mercury content in Yuhong ointment was detected in range from 0.7 to 1.5 mg x g(-1).


CONCLUSIONS
The proposed method is accurate, highly reproducible and it can be used to control mercury content of Yuhong ointment.
Department of Toxicology, School of Public Health, Peking University, Beijing 100191, China. newman-611@163.com
Xinmin
X
Sun
Qi
Q
Wang
Jizheng
J
Mu
Lixia
L
Wang
D002384:Catalysis; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D008628:Mercury / Q000032:analysis* / Q000302:isolation & purification; D009824:Ointments; D012015:Reference Standards; D015203:Reproducibility of Results; D013054:Spectrophotometry, Atomic / Q000379:methods*
D004365:Drugs, Chinese Herbal; D009824:Ointments; D008628:Mercury