2002•Hubei ChemicalRequires access

Determination the Trace Amounts of Cadmium in Soil by Flow-injection FAAS with On-line Liquid-liquid Extraction

Liu Han

Abstract

A method of a flow injection with on line liquid-liquid extraction was improved for determination the trace amount of cadmium in soil samples by FAAS.In the experimental work,some experimental parameters of the chalet extraction system,such as the acidity of medium and operating factors of the route which the influent passed through were optimized?The results showed that the precision(RSD) obtained for 1.5×10 -2 μg·ml -1 cadmium standard was 3.3% relative standard deviation (n=10) and the detection limit (k=3) was 3.1×10 -4 μg·ml -1 .We analyzed a standard soil sample to check the accuracy.The results were in the range which recommended by the standard.

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Key concepts: Cadmium, Extraction (chemistry), Detection limit, Relative standard deviation, Chromatography, Trace Amounts, Soil test, Analytical Chemistry (journal)