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.
出处
《分析科学学报》
CAS
CSCD
北大核心
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)
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
Microwave ashing
Inductively coupled plasma-atomic emission spectrometry~ Crude oil
Metal element
