ROLLOVER EFFECT IN GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY WITH A GOLD PULSED HOLLOW-CATHODE LAMP

被引：5

作者：

ALLER, AJ

机构：

[1] Department of Biochemistry and Molecular Biology, University of León

来源：

ANALYTICA CHIMICA ACTA | 1993年 / 284卷 / 02期

关键词：

ATOMIC ABSORPTION SPECTROPHOTOMETRY; GOLD; ROLLOVER;

D O I：

10.1016/0003-2670(93)85321-A

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The presence of stray light in graphite furnace atomic absorption spectrometry causes errors in background correction at high analyte concentrations. The stray light level originates in the hollow-cathode lamp, but can be modified in the atomizer. Some differences were noted for both wall and platform atomization. Other factors, such as the presence of matrix components (copper) or chemical modifiers (vanadium), also affect the sensitivity for gold and consequently have an effect on the roll-over phenomenon. Experimental results show that the stray radiation depends on the wavelength region used for the determination of gold.

引用

收藏

页码：361 / 366

页数：6

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