湿法消解-电感耦合等离子体质谱法测定土壤中的铍钼铊

Determination of Beryllium, Molybdenum and Thallium in Soil Samples by Inductively Coupled Plasma-Mass Spectrometer with Wet Digestion

采用盐酸-硝酸-氢氟酸及高氯酸体系湿法消解国家标准土壤样品，用电感耦合等离子体质谱法对土壤消解液中的铍钼铊进行定量分析，测定值与推荐值相符合。铍、钼和铊的检出限分别为0．017、0．015和0．004mg／k．g。各元素的相对标准偏差在0．5％～5．7％，相对误差在-8．0-6．0％，可以满足土壤样品中此类铍钼铊等痕量金属元素的同时测定。

A method for determination of beryllium, molybdenum and thallium in the national standard soil samples by Inductively Coupled Plasma-Mass Spectrometer and wet digestion for sample preparation was developed. The determination resultwas consistent with the certified values. The elements detection limit ofthe proposed methodwas0.017、 0.015and 0.004 mg/kg respectively., the relative standard deviations were 0.5%-3.7%,andthe relative errors were -8.0%-6.0%. The results indicated that the method is accurate for determination of trace heavy metals such as beryllium, molybdenum and thalliumin soil samples