【摘要】 采用微波消解-原子荧光光谱法测定大气细颗粒物中的砷,确定了最佳样品处理方法与测定条件。方法在0μg/L～40.0μg/L范围内线性良好,标准曲线相关系数达0.999以上,检出限为0.01μg/L。土壤标准品的测定值在标准值范围内,大气PM2.5滤膜样品加标回收率为96.0%～102%,5次平行测定的RSD为1.5%～3.6%。更多还原

【Abstract】 Samples of atmospheric fine particulates was digested by microwave,and arsenic was determined by hydride generation-atomic fluorescence spectroscopy( AFS). The experimental conditions for treating and analyzing samples were optimized. The correlation coefficient of standard curve could reach more than 0. 999 between 0 μg / L ～ 40. 0 μg / L,and the detection limit was 0. 01 μg / L. The analysis results of national soil standard materials were all within standard value ranges. The recovery rate of standard addition in the sample was in the range of 96% to 102%. RSD of result by the five parallel determination was 1. 5% to 3. 6%.更多还原