煤油基-石墨炉原子吸收光谱法直接进样测定原油中砷含量  

Determination of arsenic in crude oil by kerosene based graphite furnace atomic absorption spectrometry

作　　者：张占元 毛佳伟[2] 宁豪 赖冬梅 李铭 Zhang Zhanyuan;Mao Jiawei;Ning Hao;Lai Dongmei;Li Ming(Chengdu Product Quality Inspection Research Institute Co.,Ltd.,Chengdu 610100,China;Sichuan Product Quality Supervision and Inspection Institute,Chengdu 610100,China)

机构地区：[1]成都产品质量检验研究院有限责任公司,成都610100 [2]四川省产品质量监督检验检测院,成都610100

出　　处：《分析仪器》2025年第2期77-82,共6页Analytical Instrumentation

基　　金：四川省市场监督管理局科技计划项目(SCSJZ2023003)。

摘　　要：原油中砷元素主要以有机砷化物形态存在,受热易分解损失,通过优化改进剂及石墨炉操作条件,建立了煤油基-石墨炉原子吸收光谱法直接测定原油及重油样品中As含量的分析方法。实验结果表明,所建立的直接进样法在0~1000μg/L砷浓度范围内线性良好,线性相关系数为0.999,检出限为6.1μg/L,定量限为18.3μg/L,加标回收率在96.5%~102.8%之间,并通过与标准SY/T 0528-2008方法结果对比进一步验证本方法具有操作更为简便、准确度高等优点,完全满足原油样品中砷的快速检测需求。Based on the characteristics of arsenic in crude oil mainly exist in the form of organic arsenide and easy decompose and lose when heated,graphite furnace atomic absorption spectrometry method is established to determinate As content in crude oil directly.The experimental results show that the linear correlation coefficient is 0.999 in the range of 0-1000μg/L,the detection limit is 6.1μg/L,the limit of quantitation is 18.3μg/L,the recoveries of spiked samples are between 96.5%and 102.8%.Through the comparison with the results of SY/T 0528-2008 method,it is verified that this method has more convenient operation and higher accuracy,which fully meets the needs of rapid detection of arsenic in crude oil.

关 键 词：原油 砷含量 原子吸收 煤油基 直接进样 

分 类 号：TE622.1[石油与天然气工程—油气加工工程]