The method of magnetic stirring-inductively coupled plasma emission spectroscopy to determine exchangeable bases in calcareous soil
Soil samples were extracted by magnetic stirring and centrifugation,and four salt groups of exchange potassium,sodium,calcium and magnesium in sample exchange fluid were determined by plasma emission spectroscopy.A set of determination method suitable for batch agricultural soil was developed,which was simple,efficient and energy saving,stable and easy to master.The detection limit was exchangeable potassium 0.025 cmol/kg,exchangeable sodium 0.028 cmol/kg,exchangeable calcium 0.040 cmol/kg,exchangeable magnesium 0.019 cmol/kg.The determination results of the national certified standard substances were consistent with the recommended value and met with the quality control requirements.
magnetic stirringagricultural soilexchange potassium,sodium,calcium,magnesiumplasma emission spectrum
万方数据
维普
