两种不同酸溶体系微波消解-原子荧光测煤中砷含量对比

Comparison of Arsenic Content in Coal Measured by Microwave Digestion and Atomic Fluorescence in Two Different Acid Solution Systems

砷为煤中有害元素,测定其结果非常必要。用两种不同的酸溶体系,分别是HNO3-H2O2-HF和HNO3-H2O2体系,微波消解溶样,用原子荧光光度计测定As含量。线性范围是0~50μg/L,加标回收率分别为105%~110%、85%~105%。

arsenic is a harmful element in coal,so it is necessary to determine the results.Two different acid solution systems,HNO 3-H 2O 2-HF and HNO 3-H 2O 2,were used to resolve the samples by microwave,and As content was determined by atomic fluorescence photometer.The linear range is 0~50μg/L,and the recoveries are 105%~110%and 85%~105%,respectively.