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| Determination of Mercury in Soil by Double-Channel Atomic Fluorescence Spectrometry |
| Received:November 23, 2016 Revised:February 16, 2017 |
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| DOI：doi:10.3969/j.issn.2095-1035.2017.03.001 |
| KeyWord:mercury; soil; digestion; double-channel atomic fluorescence spectrometry |
| Author | Institution |
| LI Jinrong |
山西省环境科学研究院，太原 |
| DANG Jinhua |
山西省环境科学研究院，太原 |
| SONG Shanjuan |
山西省环境科学研究院，太原 |
| LIU Lijun |
山西省环境科学研究院，太原 |
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| Abstract: |
| A sample was digested by nitric acid（3+1）with a boiling water bath heating. Mercury was determined by double-channel atomic fluorescence spectrometry with 1％nitric acid as the carrier flow and 0.5 g/L potassium borohydride as the reducing agent. The negative high voltage, the lamp current and the flow rate of the carrier were optimized. The method was verified by soil standard materials and the results showed that the detection limit of the method was 0.000 7 mg/kg, the relative standard deviation 3.9% and the recovery of standard addition between 95.4％ and 101％. The method is simple, rapid and accurate. |
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