摘要
采用顶空气相色谱质谱法（HS/GC-MS）对土壤中挥发性卤代烃进行了测定,优化了分析的顶空条件、气相色谱质谱分离条件。在优化条件下成功实现了24种挥发性卤代烃的分离,确定了分析方法的检出限、测定下限、精密度及回收率等质量控制参数。方法的检出限为0.8~4.4μg/kg,测定下限为3.2~17.6μg/kg。当加标量为100μg/kg和250μg/kg时,相对标准偏差分别为1.3%~12.6%和2.6%~8.7%,加标回收率分别为71.4%~126%和63.1%~121%。
The method to determine the volatile halogenated hydrocarbons in soil by headspace gas chromatography- mass spectrometry（ HS / GC- MS） is established in this study. The headspace conditions and GC- MS operation parameters were optimized. Under the optimal operation parameters,24 kinds of volatile halogenated hydrocarbons were separated clearly. The detection limit,determination limit,precision degree and recovery rate were also decided. The detection limit and determination limit of this method were 0. 8 ~ 4. 4 μg / kg and 3. 2 ~ 17. 6 μg / kg,respectively. When the adding standard were 100 μg / kg and 250 μg / kg,the relative standard deviations were 1. 3% ~ 12. 6% and 2. 6% ~ 8. 7% respectively,the recovery rates were71. 4% ~ 126% and 63. 1% ~ 121% respectively.
出处
《干旱环境监测》
2016年第2期62-66,共5页
Arid Environmental Monitoring
