Determination of mercury content in yuhong ointment by wet catalytic digestion-atomic absorption spectrometry.
- Author:
Xinmin SUN
1
;
Qi WANG
;
Jizheng MU
;
Lixia WANG
Author Information
- Publication Type:Journal Article
- MeSH: Catalysis; Drugs, Chinese Herbal; chemistry; Mercury; analysis; isolation & purification; Ointments; Reference Standards; Reproducibility of Results; Spectrophotometry, Atomic; methods
- From: China Journal of Chinese Materia Medica 2012;37(6):744-745
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo develop a method for determining the content of mercury contained in Yuhong ointment.
METHODThe 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).
RESULTThe 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).
CONCLUSIONThe proposed method is accurate, highly reproducible and it can be used to control mercury content of Yuhong ointment.
