摘要
研究了流动注射小体积进样，电感耦合等离子体质谱法的基体效应，并与连续进样作了比较。流动注射小体积（１００μＬ）进样时，电离电位较高的Ａｓ和 Ａｕ基体对分析元素的信号表现为增强效应，分析元素的质量数越大，所受增强效应越小。电离电位较低的Ｃｕ、Ｉｎ、Ｌｉ、Ｎａ和Ｐｂ基体对分析元素的信号则表现为抑制效应，基体元素的质量数越大，对分析元素的抑制效应也越大；质量数较大的分析元素，所受的抑制效应较小；对质量数相近的分析元素，电离电位较高者受的抑制较大。与连续进样相比，流动注射小体积进样时，基体元素对分析元素的抑制效应较弱，而增强效应较强。
Matrix effects in flow injection (FI) inductively coupled plasma mass spectrometry has been studied, and the results have been compared with those of continuous nebulization. The matrix element As and An with higher ionization potential (> 9eV) have enhancement effect on the analyte signal, and the heavier the analyte mass, the smaller the enhancement effects by H. The matrix elements Cu, In, Li, Na and Pb with lower ionization potential have suppression effect on the analyte signal. The heavier the matrix element mass, the more severe the suppression effects. The heavier the analyte mass, the smaller the suppression effects. The higher ionization potential of analyte, the more severe the suppression effects. Compared with continuous nebulization, the degree of suppression effect is smaller and the degree of the enhancement effect is larger by FI.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2000年第12期1476-1480,共5页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金
科技部资助项目。
关键词
流动注射
电感耦合等离子体质谱法
基体效应
Flow injection, inductively coupled plasma mass spectrometry, matrix effect
