微波灰化-电感耦合等离子体原子发射光谱法测定原油中的金属元素  

Determination of Metal Elements in Crude Oil by Microwave Ashing-Inductively Coupled Plasma-Atomic Emission Spectrometry

作　　者：王豪[1] 邬蓓蕾[1] 林振兴[1] 黄通人[1] 叶佳楣[1] 

机构地区：[1]宁波出入境检验检疫局,浙江宁波315000

出　　处：《分析科学学报》2012年第4期553-556,共4页Journal of Analytical Science

基　　金：国家质检总局科技计划(No.2006IK057);质检公益性科研项目(No.20124240041)

摘　　要：采用微波灰化技术消化原油样品,并使用电感耦合等离子体原子发射光谱法(ICP-AES)测定其中Na、Mg、Ca、Fe、V、Ni和Cu的含量。探讨了原油样品中金属元素测定的称样量和微波灰化程序,并优化了仪器工作参数和实验条件。样品经微波灰化处理后,用盐酸溶解残渣,方法对Na、Mg、Ca、Fe、V、Ni和Cu元素的检出限分别为0.07、0.01、0.01、0.01、0.02、0.04和0.03mg/kg,回收率在84.5%～96.6%之间,相对标准偏差在2.1%～6.9%范围。方法简便、可靠,可用于原油中Na、Mg、Ca、Fe、V、Ni和Cu 7种金属元素的检测。A determination method of Na, Mg, Ca, Fe, V, Ni and Cu in crude oil by inductively coupled plasma-atomic emission spectrometry （ICP-AES）, using microwave ashing as samples pre-treatment means was established. The programs for microwave ashing and sample weight were studied. Meanwhile, the operative conditions of ICP-AES were optimized. The detection limits were 0.07,0.01, 0.01,0.01, 0.02,0.04 and 0.03 mg/kg for Na, Mg, Ca, Fe, V, Ni and Cu, respectively. The average recoveries were between 84. 5% and 96. 6%, and the RSD were between 2. 1% and 6. 9% for the determination of metal elements in crude oil. The method was also suitable and practicable for the determination of Pb, As and Hg in crude oil.

关 键 词：微波灰化 电感耦合等离子发射光谱法 原油 金属元素 

分 类 号：O657.31[理学—分析化学]