Determination of Arsenic in Soil and Sediment by Cold Dissolution
In this study,a new determination method of arsenic in soil and sediment was constructed by the atomic fluorescence with 5 mL of lefort aqua regia was used as the dissolution to treat soil and sediment samples.The results showed that when the soil sample was 0.100 0 g and the fixed volume was 25 mL,the concentration range of the standard solution was 0.0～10.0 mg/L,the correlation coefficient was 0.999 2,and the detection limit of arsenic was 0.000 367 mg/kg.The test results of five different concentration levels were within the range of standard values,with the relative error ranging between 2.22％and 5.81％.The RSD of the high,medium and low standard substances was 5.42％,3.04％and 2.94％.The relative deviation of the method comparison between HJ 680 and the present study is 2.75％and 1.67％;the spike recovery rate of different gradients are 94.0％～102％and 95.5％～105％.
efort aqua regiacold dissolutionarsenicsoilsediment
NETL
NSTL
万方数据
