文献类型：期刊文献

英文题名：Determination of Trace As and Se in Complex Matrix Sample by Inductively Coupled Plasma-Mass Spectrometry with O₂ Collision/Reaction Cell

作者：Lu Bing-Yuan[1];Lu Wen-Wei[2];Zhu Wei-Lin[3];Lu Yan[3]

机构：[1]E China Univ Sci & Technol, Sino German Coll Technol, Shanghai 200237, Peoples R China;[2]Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China;[3]Shanghai Univ, Dept Appl Chem, Shanghai 200044, Peoples R China

年份：2009

卷号：37

期号：12

起止页码：1781

外文期刊名：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000273596100014)】；

语种：英文

外文关键词：Inductively coupled plasma-mass spectrometry; complex matrix; arsenic; selenium; oxygen collision/reaction cell

摘要：The O-2 collision cell technology was accepted to move the analyte to new oxide line position in stead of attenuating the double charge ions directly. A minus kinetic energy discrimination configuration was used to promote the oxide ions passing. An isobaric interference on new oxide line was corrected by a mathematic equation. It was found the enhancing effect of organic reagent benefit to As and Se oxide ion signal also. The 1% methanol sample solution was applied to improve the analyte sensitivity. The detection limits were 4.5 ng/L for As and 6.2 ng/L for Se. The background equivalent concentration was 0.022 mu g/L for As and 0. 025 mu g/L for Se. The analysis errors enter into the allowed range of the standard material., which greatly improve the analytical accuracy of the actual sample.