碘浸硅胶吸附法测量天然气中汞含量  

Determination of Mercury Content in Natural Gas by Chemisorption on Iodine -Impregnated Silica Gel

作　　者：涂振权[1] 王秋菊 何斌[3] 

机构地区：[1]四川大学化学工程学院 [2]大连LNG项目经理部 [3]中石油西南油气田公司天然气研究院

出　　处：《石油与天然气化工》2009年第3期255-257,共3页Chemical engineering of oil & gas

摘　　要：由于天然气中汞含量测量的现有国家标准GB/T 16781-1997具有局限性,本文对ISO6978.1-2003天然气中汞含量测量方法进行了研究,即采用碘浸硅胶吸附法富集天然气中的汞,经处理后再用冷原子荧光光谱法分析测定。研究结果表明,加标回收率为91%～109%,重复性RSD<4%,经过用于实际测定的考查,得到满意结果。Because the existing national standard GB/T 16781-1997 is limitative in determination of the mercury content in natural gas, this paper makes a study of ISO 6978.1-2003, a method for the determination of total mercury content in natural gas using a sampling method by chemisorption on iodine-impregnated silica gel. The collected mercury is handled and determined by cold atomic fluorescence spectrometry. The study showed that the recovery and the relative standard deviation of the method were 91% to 109% and less than 4% respectively. The results of determining the actual samples by the method were shown to be satisfactory.

关 键 词：碘浸硅胶 天然气 汞 冷原子荧光光谱法 

分 类 号：TE642[石油与天然气工程—油气加工工程]