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首页> 美国政府科技报告 >Aqueous Extraction-Headspace/Gas Chromatographic Method for Determination ofVolatile Organic Compounds in Soils
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Aqueous Extraction-Headspace/Gas Chromatographic Method for Determination ofVolatile Organic Compounds in Soils

机译：水萃取 - 顶空/气相色谱法测定土壤中挥发性有机物

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摘要

This study compares aqueous extraction-headspace/Gas Chromatography (GC) and theEPA SW-846 purge-and-trap-gas chromatography/mass spectrometry(Method 8240)for the determination of four common Volatile Organic Compounds (VOCs) in soils. Comparisons were made on two fortified soils and two contaminated field soils. In only two of the cases were consistent significant differences found-for the two most hydrophobic compounds in a high organic carbon soil, and for TCE in a field-contaminated soil that had previously shown slow aqueous VOC desorption. The findings strongly suggest that aqueous extraction-headspace/GC can be used not only to screen soils for VOCs giving same-day results, but often will provide results not significantly different from current laboratory based measurements. Aqueous extraction, Headspace, Screening, Hazardous waste, Pollution, Volatile organic compounds.

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