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

作　　者：钱瑾[1] 陈建文 戴军升[1] 吴诗剑[1] 刘铭[1] 

机构地区：[1]上海市环境监测中心,上海200030 [2]上海市对外服务公司,上海200031

出　　处：《环境污染与防治》2005年第1期76-78,共3页Environmental Pollution & Control

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.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.

关 键 词：苯系物 气相色谱法 QC 检出限 QA 同时测定 化合物 加标回收率 土壤 样品分析 

分 类 号：X131[环境科学与工程—环境科学]