CAJ | 학술논문

本实验采用氧气碰撞/反应池技术促使分析物生成氧化物离子,避开原来的双电荷离子干扰.同时采用负的动能歧视效应来改善氧化物离子的通过率,对在新的谱线位置上出现同量异位素干扰辅以数学校正方法.实验发现, 有机试剂的增敏效应同样适合于As和Se的氧化物离子,1%甲醇溶液用于改善As和Se的分析灵敏度.在解决这类样品中微量As和Se的分析难题上,本方法显示了很好的效果,检出限为:As 0.0045μg/L, Se 0.0062μg/L,背景等效浓度:As 0.022μg/L,Se 0.025μg/L,分析结果的误差在标准物质的允许误差范围内,极大改善了实际样品分析结果的准确度.
본실험채용양기팽당/반응지기술촉사분석물생성양화물리자,피개원래적쌍전하리자간우.동시채용부적동능기시효응래개선양화물리자적통과솔,대재신적보선위치상출현동량이위소간우보이수학교정방법.실험발현, 유궤시제적증민효응동양괄합우As화Se적양화물리자,1%갑순용액용우개선As화Se적분석령민도.재해결저류양품중미량As화Se적분석난제상,본방법현시료흔호적효과,검출한위:As 0.0045μg/L, Se 0.0062μg/L,배경등효농도:As 0.022μg/L,Se 0.025μg/L,분석결과적오차재표준물질적윤허오차범위내,겁대개선료실제양품분석결과적준학도.
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 μg/L for As and 0.025 μg/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.