水平电极发射光谱法测试多目标生态地球化学土壤样品中的钼

Molybdenum Mensuration of Soil Samples by the Horizontal Electrode Emission Spectroscopy

以K2SO4、S粉、C粉、聚三氟氯乙烯粉、Al2O3、MgO混合物作为缓冲剂，以Sb为内标，电极发射光谱法测试多目标地球化学土壤样品中的钼。方法的检出限为0．28μg／g（3S），方法的精密度（RSD）为7．25％～8．66％。测试了国家一级地球化学标准物质，结果与标准值相符合。该方法已用于10000多件土壤样品的分析，并取得满意的结果。

By using K2SO4, S powder, C powder, fluorothene powder, Al2O3 and MgO mixture as buffering agents and antimony as an internal standard, it mensurates the molybdenum element in soil samples by the electrode emission spectroscopy. For the measuring method the detection limit is 0. 28μg/g and the precision degree is 7.25%-8. 66%. Compared with the standard values of state-level geochemical criterion substance, it is shown that the testing results are in agreement with the standard values. About 10000 soil samples are analyzed by the detection method, which has a satisfied result.