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气相色谱法同时测定苯系物和汽油化合物
Analysis on gasoline range organics & benzene, toluene, ethylbenzene, xylene with gas chromatography
【摘要】 气相色谱法具有较高的灵敏度和良好的线性关系。按照EPA QA/QC的要求,将该方法运用于实际样品分析。结果表明,水中汽油检出限为0.04 mg/L,水中苯系物检出限为0.003~0.005 mg/L;土壤中汽油检出限为0.5 mg/kg,土壤中苯系物检出限为0.005~0.008 mg/kg。样品加标回收率为97.1%~106.8%,变异系数为2.1%~4.6%,结果令人满意。
【Abstract】 Enrichment with purge\|trap, gas chromatography with the separation of DB\|624 capillary column and analyses on gasoline range organics & BTEX were discussed. The method had higher sensitivity and linearity. The results showed that detection limit of GROs was 0.04 mg/L in water & 0.5 mg/kg in soil, and that detection limit of BTEX was 0.003~0.005 mg/L in water & 0.005~0.008 mg/kg in soil. The recovery of gasoline range organics & BTEX was 93.7%~105.0%. The relative std. deviation was 2.1%~4.6%. The analysis result was satisfactory.
- 【文献出处】 环境污染与防治 ,Environmental Pollution & Control , 编辑部邮箱 ,2005年01期
- 【分类号】X131
- 【被引频次】5
- 【下载频次】256