微波消解-原子荧光光谱法测定循环种植土壤中的硒

采用微波消解-原子荧光光谱法测定循环种植土壤中硒,优化了微波的消解条件和仪器的工作条件,建立了循环有机国药种植土壤中硒的快速分析方法。实验的标准偏差小,重现性、精密度好,平均加标回收率为102.3%。方法快速、准确、可靠,操作简单环保。三年有机国药循环种植土壤中硒含量为0.428 8mg/kg,两年有机国药循环种植土壤中硒含量为0.350 4mg/kg。

Determination of Se Content in the Cyclically Planting Soil by Microwave Digestion-Atomic Fluorescence Spectrometry

A microwave digestion-atomic fluorescence spectrometry method was established to fast determining Se in the soil for cyclically and organically planting traditional Chinese medicine. The conditions for sample digestion and instrument operation were optimized. The method has small standard deviation, good repeatability and precision. The average recovery for Se is 102.3%. The method is simple, fast, accurate, reliable and environmentally friendly. The Se contents in the soil , in which the traditional Chinese medicine had been cyclically and organically planted for three years and two years are 0.428 mg/kg and 0.350, respectively.