原油中微量金属元素的测定及风化条件下元素的变化规律  

Determination of trace metal elements in crude oils and the changes of trace metal elements of the weathered oils

作　　者：杨春茹[1,2] 陈发荣[2,3] 李景喜[2] 郑立[2] 杨东方[1] 韩彬[2] 王小如[2,3] 

机构地区：[1]上海海洋大学水产与生命学院,上海201306 [2]国家海洋局第一海洋研究所,青岛266061 [3]中国海洋大学化学化工学院,青岛266100

出　　处：《分析试验室》2011年第2期70-73,共4页Chinese Journal of Analysis Laboratory

基　　金：海洋公益性行业科研专项(200705011);海洋溢油鉴别与损害评估技术重点实验室开放基金(200920);海洋一所基本科研业务费专项(2007G17);科技基础性工作专项(2008FY230600)项目资助

摘　　要：建立了微波消解-电感耦合等离子体质谱(ICP-MS)法同时测定原油及自然风化后原油中的V、Cr、Mn、Fe、Ni、Zn、Mo、Ba等11种微量金属元素的方法。结果表明,11种微量金属元素的检出限为0.0056～0.8729μg/g,线性关系良好,相关系数r≥0.9995;相对标准偏差(RSD)<5.0%。经过30d风化,原油微量金属元素的含量发生较大变化,其中Ni、V元素含量相对稳定,抗风化能力较强,且Ni/V比值基本保持不变。A method was studied for the analysis of V,Cr,Mn,Fe,Ni,Zn,Mo,Ba etc in different crude oils and weathered oils by ICP-MS after these samples were digested with microwave digestion. The results showed that the detection limit of the method was in the range of 0. 0056 - 0. 8729μg/g depending on eleven different elements. And the linear correlation coefficient was preferable, equaling to or more than 0. 9995 ; the relative standard deviation was less than 5.0%. The distribution patterns of the trace metal elements in crude oils had great change after 30 days weathering; Among the selected elements, Ni ,V had strong weathering-resistant capabilities and Ni/V ratio remained relatively stable.

关 键 词：原油 微量金属元素 风化 锦/钒比值 

分 类 号：O657.63[理学—分析化学]