To develop a method for determining the content of mercury contained in Yuhong ointment.
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).
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).
The proposed method is accurate, highly reproducible and it can be used to control mercury content of Yuhong ointment.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica 03/2012; 37(6):744-5.