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《Environmental Science & Technology》 2013-S1
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Determination of BTEX in Water by the Headspace-Gas Chromatography

GUO Chun-hua,LI Xiao-bo,CAI Wan-yuan,ZHAO Kai-yun(College of Environment Science and Technology of Liaoning Technical University,Fuxin 123000,Chinese)  
A method for quantitative determination of volatile BTEX in water with headspace gas chromatography was discussed in the paper.The parameters that affect the extraction efficiency such as the effect of salt addition,equilibration temperature and equilibration time were studied in details.The results showed that the addition of inorganic salts could improve the response of BTEX.Extraction efficiency reached a maximum when headspace equilibration temperature and time were at 60 ℃ and 50 minutes,respectively.Under the optimum experimental conditions,the linearity of the regression equations was excellent.The results of detection limits for the studied compounds showed that the limits of detection were in the range of 2.5 to 5.9 μg/L.The recoveries were 94.0%~96.8%.The relative standard deviations(RSD%) was less than 14.7%,which demonstrated a good method repeatability and an acceptable precision.The analysis results showed that the method is simple,rapid,accurate and practical for the determination of BTEX in water samples.
【Fund】: 辽宁省大学生创新创业训练计划项目(201210147002)
【CateGory Index】: X832;O657.71
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