期刊
ANALYTICAL SCIENCES
卷 36, 期 4, 页码 419-423出版社
SPRINGERNATURE
DOI: 10.2116/analsci.19P223
关键词
Cadmium; graphite tube; electrochemical vapor generation; atomic fluorescence spectrometry
An electrochemical vapor generation (EcHG) system to determine the cadmium content using atomic fluorescence spectrometry has been established. The EcHG system uses two serially-connected graphite tubes as two electrolysis cells and an AC to DC power wall plug adapter with the constant voltage mode as a power supply. The system did not have an ion exchange membrane and only needed a pump to transport the feed solution and waste. Under these optimized conditions, the detection limit (3 sigma) and the relative standard deviation were 0.05 ng mL(-1) and 3.2%, respectively. The EcHG efficiency was 38.4 +/- 2.2%. The proposed technique has been successfully applied to determine the cadmium in three certified reference materials for environmental water and two drinking water samples.
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