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首页> 外文期刊>Ground Water Monitoring & Remediation >A New Method for Determining Compound Specific Carbon Isotope of Chlorinated Solvents in Porewater
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A New Method for Determining Compound Specific Carbon Isotope of Chlorinated Solvents in Porewater

机译：一种测定沉积物中氯化溶剂化合物特异性碳同位素的新方法

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摘要

A new method for the extraction of chlorinated solvents (CSs) from porewater with dimethylacetamide (DMA) used as a solvent and the determination of delta C-13 by gas chromatography-isotope ratio mass spectrometry (GC-IRMS) with solid-phase microextraction (SPME) are presented. This method was used for the determination of delta C-13 of chloroethenes and chloromethanes. The extraction of the CSs from porewater with DMA led to a minimal loss of mass of solvent and chlorinated compounds. The accuracy of the method was verified with the analysis of the pure injected compounds using elemental analyzer-isotope ratio mass spectrometry (EA-IRMS). It has been effectively applied in a study area in saturated soil samples of a pollutant source zone of perchloroethylene (PCE) and trichloroethylene (TCE). The limit of quantification of the new method was 0.034 mu g/g for PCE and TCE for 10-20 g of soil sample. This new method allows for compound-specific isotope analysis of CSs in porewater, which can be beneficial in sites where the identification of contamination sources and the behavior of the contaminants are not clear.
机译：用聚二甲基乙酰胺（DMA）从沉淀物中提取氯化溶剂（CSS）的新方法，用作固相微萃取（ SPME）呈现。该方法用于测定氯乙烯和氯甲烷的δC-13。将CSS与DMA的沉淀物提取导致溶剂和氯化化合物的质量最小。通过使用元素分析仪同位素比率质谱（EA-IRMS）的纯注射化合物的分析来验证该方法的准确性。已经有效地应用于高氯乙烯（PCE）和三氯乙烯（TCE）的污染物源区的饱和土样品中的研究区域。用于PCE和TCE的新方法的定量限为10-20g土壤样品。这种新方法允许沉积物中CSS的复合特异性同位素分析，这在鉴定污染源和污染物行为的部位可能是有益的。

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    《Ground Water Monitoring & Remediation》 |2021年第3期|51-57|共7页
  • 作者

    Herrero Jofre; Puigserver Diana; Parker Beth L.; Carmona Jose M.;

  • 作者单位

    Univ Barcelona Dept Minerol Petrol & Appl Geol Fac Earth Sci Water Res Inst IdRA C MartiFranques SN Barcelona Spain;

    Univ Barcelona Dept Minerol Petrol & Appl Geol Fac Earth Sci Water Res Inst IdRA C Marti Franques SN Barcelona Spain;

    Univ Guelph Sch Engn 50 Stone Rd East Guelph ON N1G 2W1 Canada;

    Univ Barcelona Dept Minerol Petrol & Appl Geol Fac Earth Sci Water Res Inst IdRA C Marti Franques SN Barcelona Spain;

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