[Determination of mercury in Chinese medicinal material and biological samples using pyrolysis atomic absorption spectrometry].
In this paper a rapid and simple method using pyrolysis coupled with atomic absorption spectrometry for the analysis of total mercury in Chinese medicinal material and biological samples is presented. No sample digestion was needed and this greatly simplifies the analytical procedure and minimizes potential sources of contamination. Under optimum conditions, the reproducibility of the method was 2.1% for peak area and 9.1% for peak height. The detection limit (3sigma) was 6.3 ng x g(-1), and the recovery was within the range of 95%-105%. Several standard reference materials were analyzed and the results were obtained with satisfaction. The performance of the method was compared with inductively coupled plasma-mass spectrometry (ICP-MS), and excellent agreements were observed between these two methods.
Huang
Ru-jin
RJ
Department of Chemistry, Key Laboratory of Analytical Science of MOE, Xiamen University, Xiamen 361005, China.
Zhuang
Zhi-xia
ZX
Wei
Jin-feng
JF
Zhang
Shu-qiong
SQ
Shen
Jin-can
JC
Wang
Xiao-ru
XR
D000818:Animals; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D013058:Mass Spectrometry; D008628:Mercury / Q000032:analysis*; D051381:Rats; D015203:Reproducibility of Results; D013054:Spectrophotometry, Atomic / Q000295:instrumentation / Q000379:methods*
D004365:Drugs, Chinese Herbal; D008628:Mercury