ICP-MS有机溶剂稀释法测定柴油中的砷含量

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作者:: 刘丽莹，梁立伟，张岩，徐婷婷，靳丽丽
Liu Liying, Liang Liwei, Zhang Yan, Xu Tingting, Jin Lili

作者单位:: （中国石油石油化工研究院大庆化工研究中心，黑龙江大庆 163714）
(PetroChina Petrochemical Research Institute, Daqing Petrochemical Research Center, Daqing 163714, china)

摘要:: 摘要：选择航空煤油作为稀释溶剂稀释样品，采用电感耦合等离子体质谱法测定柴油中的砷（As）含量，优化了样品前处理条件和仪器测定条件。采用碰撞工作模式和在线加入内标元素钇（Y）互补使用的方式，消除分析中的干扰，3 个不同工艺的柴油样品中 As 的回收率均在98%~104%之间。实际样品测定结果的相对标准偏差均小于1%。方法快速、简便，准确度和精密度高，适用于柴油中As含量的快速测定。
Abstract: Samples were diluted in proportion by aviation kerosene and was used to determine arsenic content in the diesels byinductively coupled plasma mass spectrometry (ICP-MS), which included the optimizing sample pretreatment conditions andinstrument measurement conditions. Interference in the analysis is eliminated by using both the collision mode and the on-lineaddition of the internal standard element yttrium, the recovery rates of arsenic element in three different process diesel sampleswere in the range of 98%~104% and the relative standard deviations for actual sample measurement were all less than 1%. Themeasuring method was proved to be rapid, simple, highly accurate and precise, suitable for rapid detection of arsenic in the diesels.