微波辅助提取-紫外分光光度法检测土壤中的油脂总量

Determination of Total Oil in Soils by Microwave-Assisted Extraction Ultraviolet Spectrophotometry

以合成土样为对象 ,研究了微波辅助提取油脂的条件及其提取效率 ,由此建立了土壤中油脂分析的快速光度检测方法。在中档微波场辐射 3× 10 s时 ,2次 15 m L丙酮 -正己烷 (体积比 1∶ 1)萃取 10 g合成土样中的油脂时所获收率最高。方法的平均回收率大于 97.3% ,RSD小于 2 .5 % ,其结果与索氏萃取 4

A rapid spectrometric method for determination of oil in soils was established with the aid of microwave energy in extraction.The optimum parameters for determination of total oil in soil were studied in detail.The average recovery of oil is larger than 97.3% and RSD is less than 2.5%.This method is more efficient and solvent\|saving compared with the traditional Soxhlet extraction.