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Determination of trace copper, lead and cadmium in seawater by graphite furnace atomic absorption spectrometry with dithiazone-n-butyl acetate extraction


, : Determination of trace copper, lead and cadmium in seawater by graphite furnace atomic absorption spectrometry with dithiazone-n-butyl acetate extraction. Huanjing Kexue 17(3): 61-63, 95

This paper studied the optimum conditions for the determination of trace copper, lead and cadmium in seawater by graphite furnace atomic absorption spectrometry with dithizone-n-butyl acetate extraction. The results showed that copper, lead and cadmium in the weakly alkaline medium (pH8-10) can be quantitatively extracted simultaneously. The relative standard deviation is less than 3% and the recoveries for the added standard are between 92%-102%. The detection limit (mu-g/L) for copper, lead and cadmium are 0.06, 0.14 and 0.002, respectively. This method is simple and rapid. The method has been successfully applied to the determination of trace copper, lead and cadmium in seawater with satisfactory results.

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