摘要
采用动态顶空进样，气相色谱／离子阱质谱法测定土壤中的苯系物。对样品的吹扫温度、吹扫时问和解析时间进行了优化，各组分的方法检出限：苯为0．43μg／kg，甲苯为1．13μg／kg，对、间二甲苯均为1．74μg／kg,邻二甲苯为0．37μg／kg；对5种苯系物的低、中质量浓度标液进行加标，回收率为82．0％～115％，重复测定7次的RSD为4．8％，15．1％。对某造纸厂周边土壤样品中苯系物进行测定，结果固废堆存处周边土壤中苯和甲苯检出。
A gas chromatography/mass spectrometry coupled with dynamic headspace method was estab- lished for the determination of benzene series in soil. The sweeping temperature ,sweeping time, and desorption time were optimized, and the detection limits were from 0.37 μg/kg - 1.74 μg/kg. The low and medium con- centration of blank spike showed the recovery rate were form 82.0% -115%. The RSDs of seven times＇ repeti- tive determination ranged from 4.8% -15.1%. At the same time, the benzene series in the soil around the pa- per mill were detected using this method and the result was benzene and toluene were detected in the soil around the solid waste piles.
出处
《环境监测管理与技术》
2013年第5期34-37,共4页
The Administration and Technique of Environmental Monitoring
