This paper studied the determination of copper,zinc and cadmium in soil,and optimized the instrument measurement conditions,microwave digestion reagent,etc.The concentration of copper is linear from 0.05 to 0.4μg·mL-1,linear correlation coefficient r=0.99930;zinc concentration is from 0.02 to 0.8μg·mL-1,linear correlation coefficient r=0.99940;cadmium concentration is linear from 0.2 to 2.4μg·L-1,linear correlation r=0.99840.The recovery rate of the spike is between 95.3%and 104.6%,and the relative standard deviation of the method(n=6)is between 0.87%and 5.91%.Through the detection of copper,zinc and cadmium content in 8 soil samples of a farmland,a good method is established.The experimental results show that the method has high accuracy and good precision,which provides a certain reference for the regulatory authorities.
维普
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