冷原子吸收光谱法分析测定天然气中微量总汞  

Determination of Trace total Mercury in Natural Gas by Cold Vapor Absorption Spectrometry Method

作　　者：宋薇[1,2] 吴坚 汪正范[1,2] 丁辉[1,2] 

机构地区：[1]北京市理化分析测试中心 [2]中国计量科学研究院,北京100089

出　　处：《现代科学仪器》1999年第4期51-52,共2页Modern Scientific Instruments

摘　　要：本文研究了冷原子吸收法测定天然气中汞的适宜条件，采用碘－活性碳吸附管收集天然气管道中的汞，然后用微波消解法溶样，再用冷原子吸收光谱法分析测定汞的方法． ＲＳＤ＜ ５％，方法具有简便，快速，避免汞的挥发损失的特点，用于实际测定，得到满意结果。The authors set up the procedures to determin the trace total mercury in gas by cold vapor atomic absorption spectrometry. Sampling mercury from natural gas with I-active carbon, and the microwave oven digestion system is used for dissolution of the samples. The recovery ranges and the relative standard deviation were 91. 3 % to 98. 0 % and less than 5 %. The method is simple and accurate, the results were shown to be satisfactory.

关 键 词：汞 冷原子吸收 光谱法 天然气 微波溶样 测定 

分 类 号：TQ547.7[化学工程—煤化学工程]