氢化物发生-双道原子荧光光谱法联测化探样中的铋汞砷锑.pdf

第 45 卷 第 8 期 2016 年 8 月 Vol.45 No.8 Aug.2016 化工技术与开发 Technology VMGSim; C5+ content; C4 product 料中 C5+ 含量不稳定， 波动较大， 且无法在线监测， 造成操作滞后， 影响产品质量。 4 总结 针对实际生产过程中， 气体分馏装置由于上游 装置原因造成进料组分变化导致的产品不合格， 应 用流程模拟软件 VMGSim 对现有装置建立模型， 使 用软件中 “case study” 功能对原料组分、 产品要求、 塔底温度进行模拟计算， 拟合出原料 C5+ 含量与 C101 塔底温度变化的趋势图， 并将计算结果运用于 实际操作中。 气体分馏装置通过流程模拟计算的理论数据， 在操作过程中 C101 塔底温度以高于模拟计算的理 论温度进行操作， 实践证明 C4 产品中 C3 组分合格 率大大提高。 参考文献： 1 劳业荣 . 气体分馏装置稳态模拟和操作优化 J. 中外能 源，2008(2)： 74-79. 2 曹湘洪 . 石油化工流程模拟技术进展及应用 M. 北京 : 中国石化出版社，2010： 77. Determination of Bismuth, Mercury, Arsenic and Antinony in Geochemical Samples by Hydride Generation-Double Channel Atomic Fluorescence Spectrometry PENG Zhong-jin (Testing Center of Hunan Non-ferrous Metals Geology Investigation Bureau Rows 245, Jishou 416007, China) Abstract: Mineral sample was solved with aqua regia mineral. Using potassium borohydride as reducing agent. arsenic and antinony in sample was reduced with thiourea-ascorbic acid. Bismuth, mercury, arsenic and antinony was determined by hydride generation-double channel atomic fl uorescence spectrometry. According to the experimental results, the detection limit of bismuth, mercury, arsenic and antinony were 0.05g/g, 0.008g/g, 0.06g/g, 0.02g/g, respectively. The accuracy(average relative error) were 9.80%, 3.33%, -2.46%, -7.01%, respectively. The precision(relative standard deviation) were 9.23%, 8.39%, 2.27%, 9.97%, respectively. The recovery ratio were 93.9%, 104.3%, 99.1%, 99.1%, respectively. Key words: hydride generation atomi