首页> 外文期刊>Chromatographia >DETERMINATION OF CHLOROETHENES IN ENVIRONMENTAL BIOLOGICAL SAMPLES USING GAS CHROMATOGRAPHY COUPLED WITH SOLID PHASE MICRO EXTRACTION
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DETERMINATION OF CHLOROETHENES IN ENVIRONMENTAL BIOLOGICAL SAMPLES USING GAS CHROMATOGRAPHY COUPLED WITH SOLID PHASE MICRO EXTRACTION

机译:固相微萃取-气相色谱法测定环境生物样品中的氯乙烯

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摘要

An analytical method has been developed to determine the chloroethene series, tetrachloroethene (PCE), trichloroethene (TCE), cisdichloroethene (cis-DCE) and transdichloroethene (trans-DCE) in environmental biotreatment studies using gas chromatography coupled with a solid phase micro extraction (SPME) technique. The volatile chlorinated compounds in aqueous solution can be analyzed directly without solvent extraction, purge and trap, or thermal heating. The calibration curves have demonstrated good linear relationships within 50.0 to 3000.0 mu g L(-1) concentration range. Detection limits are 18.0, 5.0, 25.0, and 42.0 mu g L(-1), for PCE, TCE, cis-DCE and trans-DCE, respectively. Factors which affect the SPME process, such as sample adsorption time, thermal desorption time, and concentration of salt in the matrix, have also been evaluated. [References: 11]
机译:已开发出一种分析方法,用于在环境生物处理研究中使用气相色谱法与固相微萃取相结合来确定氯乙烯系列,四氯乙烯(PCE),三氯乙烯(TCE),顺二氯乙烯(cis-DCE)和反二氯乙烯(trans-DCE)( SPME)技术。可以直接分析水溶液中的挥发性氯化物,而无需萃取溶剂,吹扫和捕集或加热。校准曲线已证明在50.0至3000.0μg L(-1)浓度范围内具有良好的线性关系。对PCE,TCE,顺式DCE和反式DCE的检出限分别为18.0、5.0、25.0和42.0μg L(-1)。还评估了影响SPME工艺的因素,例如样品的吸附时间,热脱附时间和基质中盐的浓度。 [参考:11]

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