Determination of mercury in environmental and biological samples by cold vapour atomic absorption spectrometry |
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Authors: | Lizhong Zhu Jun Lu Xiao-Chun Le |
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Institution: | (1) Department of Chemistry, Hangzhou University, 310028 Zhejiang, Peoples Republic of China;(2) Department of Chemistry, University of British Columbia, V6T 1Z1 Vancouver, B.C., Canada |
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Abstract: | A continuously operating monitoring method for total mercury at sub-ng/ml level in environmental and biological samples by cold vapour atomic-absorption spectrometry with NaBH4 as a reductant was developed. The mercury vapour generator and absorption cell closed-end by quartz were used in this study. The detection limit (S/N = 3) and relative standard deviation of 12 determinations of 10 ng/ml Hg(II) were 0.11 ng/ml and 1.1%, respectively. The range of standard calibration curve was 0–50 ng/ml Hg, The proposed method was successfully applied to the completely continuous monitoring of total mercury in waste water, sediments and pork liver. |
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Keywords: | mercury cold vapour atomic absorption spectrometry environment |
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