ICP発光分光分析法のためのサブマイクロリットル試料導入法の開発

概要

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In the present study, sub-microliter sample introduction technique was developed for ICP atomic emission spectrometry. In order to introduce a 0.5-μl volume of sample solutions into an ICP, a tungsten-filament (WF) with a Λ shape was made for electrothermal vaporization instead of the WF with a conventional shape. The possibility of the simultaneous multi-element determination with a 0.5-μl volume of sample solutions was found by optimizing measurement conditions such as charging voltage for a capacitor and electric current for the dry of sample solution on the filament. Although the further improvement in reproducibility is required, the signal-to-background ratios in many elements were almost similar to those measured with a 5-μl volume of sample solutions.
2009-08-01