【摘要】 探讨了正己烷、石油醚及二氯甲烷∶正己烷(1∶2,体积比)混和液三种溶剂浸泡或超声波萃取与荧光光谱相结合测定土壤中荧光烃类污染物的方法,并为了验证方法有效性,对典型煤矿区93个土壤样品中的荧光烃类进行了快速检测。结果表明,采用二氯甲烷∶正己烷(1∶2,体积比)混和液超声波萃取土壤中荧光烃类,耗时短,萃取能力较强。对于具有大量土壤样品的研究区域,超声波萃取与荧光光谱法相结合可大大缩短土壤样品中总荧光烃类污染物的检测时间,进而可快速获知某一研究区内土壤环境中荧光烃类污染物的空间分异规律及相对污染程度,具有一定的应用价值。更多还原

【Abstract】 A method for the determination of hydrocarbon in soils by combining different extractant solvents,hexane,petroleum ether and dichloromethane : hexane (1∶2,V/V) with spectrofluorimetry is described,and to get the validity of the method,Hydro-carbon pollutant in 93 soil samples of typical coal mine was determined quickly by ultrasonic wave extraction and fluorescence spec-trum. Comparison experiments show that,dichloromethane : hexane(1∶2,V/V) can be used as a favorite extractant for the hydro-carbon. The method can increase the determination speed of total Hydrocarbon in soil when the samples quantity is massive,which will provide the relative pollution level and conclude the spatial variation of hydrocarbon in local area. The method is of value to some extent in environmental geochemistry.更多还原