ICP-OES测定地球化学样品中La,Y,Ba

Determination of La, Y and Ba in Geology Samples by inductively coupled argon plasma optical emission spectrometers

摘要:

水系沉积物、土壤等试样用HF[CD*2]HCl[CD*2]HNO3[CD*2]HClO4混酸消解后，以8％(V/V）HNO3溶解干渣，建立了测定地球化学样品中La，Y，Ba3种微量元素的电感耦合等离子体发射光谱（ICP[CD*2]OES）方法。方法测定限(μg/L，10SD)为：La 6.0，Y 1.0，Ba 1.0。精密度(RSD%，n=11)为：0.20~1.50，经国家一级地球化学标准物质的分析验证，结果与标准值吻合，该方法现已用于区域化探试样的分析。

Abstract:

An inductively coupled argon plasma optical emission spectrometers (ICPOES) method is established to determine 3 microelements, such as La, Y and Ba. The geochemical samples were prepared by decomposding with the mixture of HFHClHNO3[CD*2]HClO4, and then dissolving the residue with 8％(V/V）HNO3. Determination limit of this method is in range of 1~6 μg/L (10SD), La 6.0, Y 1.0 and Ba 1.0. The precision degree is 0.20~1.50 (RSD%, n=11). The analysis results were in good agreement with the certified values. The method has been applied in analyzing regional geochemical survey samples.