原子荧光光谱法测定裂解汽油中的痕量砷
2013-03-08 15:11:00 益择发布张小确杨德凤王树青
(石油化工科学研究院北京100083)
摘要提出了用氢化物发生／原子荧光光谱法测定乙烯裂解汽油中痕量砷的分析方法，解决了该类样品中砷
含量测定的难题。方法的检出限为0．023p,g／L，工作曲线的线性程度高，重复性好(n=7时，RSD<3％)。加标回收率
高，可较好地满足工业生产的控制分析需要。
关键词砷；原子荧光光谱法；氢化物发生；裂解汽油
中图分类号0657．31
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Determination of Trace As in Pyrolysis Gasoline by
Atomic Fluorescence Spectrometry
Zhang Xiaoque，Yang Defeng，Wang Shuqing
(Rt茹arch In8titute of Petroleum Processing，Beijing，100083，China)
。Abstract A method for determination of trace As in ethylene pyrolysis gasoline by hydride generation—·ao
tomic fluorescence spectrometry(HG—AFS)was developed．111e problem to measure accurately the content of As
Was solved by this method．ne detection limit Was 0．023 ttg／L．ne working curve exhibits good linear characteristic．’
11le experimental results has good repeatability(11=7，RSD<3％)．ni8 new method can meet the demands
for control analysis in industrial production with high recovery rate．
Key words Arsenic；atomic fluorescence spectrometry；hydride generation；pyrolysis gasoline
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