Tamm溶液提取——石墨炉原子吸收光谱法测定土壤中有效钼

Determination of Available Molybdenum in Soil by Tamm Solution Extraction and Graphite Furnace Atomic Absorption Spectrometry

摘要:

提出了Tamm溶液提取石墨炉原子吸收光谱法对土壤样品中有效钼的测定方法。有效钼标准曲线的相关系数为0.9995，方法检出限为0.005 mg/kg，定量限为0.018 mg/kg；采用有证标准物质对方法适用性进行了考察，本方法测定值与认定值基本一致，且相对误差（RE）不大于4.17%，相对标准偏差（RSD）不大于7.87%，本方法检出限低、精密度和正确度较好，满足土壤样品测试工作的要求，简化了工作流程，提高了工作效率，适用于批量土壤样品中有效钼的测定。

Abstract:

A method for the determination of available molybdenum in soil samples by Tamm solution extraction and graphite furnace atomic absorption spectrometry has been presented. The correlation coefficient of available molybdenum standard curve is 0.9995, the detection limit is 0.005mg/kg, and the quantitation limit is 0.018mg/kg. The applicability of the method has been investigated by using certified reference materials. The measured value of the method is basically consistent with the certified value, the relative error (RE) is less than 4.17%, and the relative standard deviation (RSD) is less than 7.87%. The detection limit of the method is low, the precision and accuracy are good, which will meet the requirements of soil sample testing and simplified the work flow. The work efficiency has been improved. It is suitable for the determination of available molybdenum in batch soil samples.