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 (3s) 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.
CITATION STYLE
Liu, S., Duan, X., & Sun, J. (2020). Determination of cadmium in water samples by electrochemical hydride generation atomic fluorescence spectrometry using series graphite tubes as electrolytic cells under constant voltage. Analytical Sciences, 36(4), 419–423. https://doi.org/10.2116/ANALSCI.19P223
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