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| 便携式GC法测定石油污染地地下水中苯、乙苯和二甲苯 |
| Field Determination of Benzene,Ethylbenzene and Xylene in Groundwater Polluted by Oil with Portable Gas Chromatography |
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| DOI： |
| 中文关键词: 苯 乙苯 二甲苯 便携式气相色谱法 石油污染 地下水 |
| 英文关键词: Benzene Ethylbenzene Xylene Portable GC Petroleum pollution Groundwater |
| 基金项目:中西部地区地下水污染调查评价-土壤与地下水污染场地调查与修复技术方法研究基金资助项目（1212011220985） |
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| 中文摘要: |
| 采用便携式气相色谱法测定石油污染地地下水中苯、乙苯和二甲苯，通过试验选择出测定的最佳色谱条件和适宜内标物，并对样品平衡时间、NaCl用量、取样后VOA瓶中液-气体积比等条件进行优化。试验表明，该方法在0 mg/L～2.00 mg/L范围内线性良好，相关系数均>0.98；方法检出限为0.05 mg/L～0.15 mg/L。用该方法和吹扫捕集-气相色谱/质谱联用法同时测定实际水样，两种方法测定结果具有良好的一致性。 |
| 英文摘要: |
| A method for determination of benzene,ethylbenzene and xylene in polluted groundwater by portable gas chromatography using internal standard was established.The effects such as the choice of internal standard,amount of salt,equilibration time,ambient temperature,the volume ratio of liquid gas,the number of repeated measurement were discussed.The results show that the internal standard method was effective to control the changes of environmental conditions.Xylene were separated by CP Wax 52 CB(4 m) capillary column.The detection limits of method were 0.05 mg/L～0.15 mg/L,the linear ranges were 0 mg/L～2.00 mg/L.The correlation of test data between this method and purge trap gas chromatography/mass spectrometry were good.This method can be used for the site screening and determination of benzene,ethylbenzene and xylene in polluted water. |
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