Shallow trichloroethene (TCE) groundwater and soil contamination associated with a Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) Superfund Site in Michigan resulted in a vapor intrusion (VI) investigation of overlying condominium units. Units with data suggesting a complete VI pathway received subslab depressurization systems (SSDs). Performance monitoring following the installation of an SSD at one unit indicated that the indoor air TCE concentrations remained elevated, despite pressure field extension tests that showed the system should effectively reduce VI from soil gas. Therefore, a cost-efficient and incremental investigation was launched to identify other potential source(s) of TCE using a field-portable gas chromatograph/mass spectrometer (GS/MS). The combination of room-by-room air sampling, potential VI entry point sampling, and emission tests of potential sources were used, which resulted in successfully identifying a bedroom furniture set as an indoor source of TCE for the unit. Although many common household products are recognized as indoor sources of TCE, emissions from finished furniture products have not been widely discussed in the VI literature. The findings of this study indicate that off gassing from furniture can lead to TCE concentrations in indoor air that exceed regulatory guidelines.

中文翻译：

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卧室家具排放的三氯乙烯成室内空气污染源

与密歇根州综合环境响应、补偿和责任法案 (CERCLA) 超级基金场地相关的浅层三氯乙烯 (TCE) 地下水和土壤污染导致对上层公寓单元进行蒸汽入侵 (VI) 调查。具有表明完整 VI 路径的数据的单元接收了子板减压系统 (SSD)。在一个装置上安装 SSD 后的性能监测表明，室内空气中的 TCE 浓度仍然很高，尽管压力场扩展测试表明该系统可以有效降低土壤气体中的 VI。因此，启动了一项具有成本效益的增量调查，以使用现场便携式气相色谱仪/质谱仪 (GS/MS) 确定 TCE 的其他潜在来源。逐个房间空气采样的组合，使用了潜在 VI 入口点采样和潜在源的排放测试，结果成功地将一套卧室家具确定为该单元的室内 TCE 源。虽然许多常见的家用产品被认为是 TCE 的室内来源，但 VI 文献中并未广泛讨论家具成品的排放。这项研究的结果表明，家具中的废气会导致室内空气中的 TCE 浓度超过监管指南。VI 文献中并未广泛讨论家具成品的排放。这项研究的结果表明，家具中的废气会导致室内空气中的 TCE 浓度超过监管指南。VI 文献中并未广泛讨论家具成品的排放。这项研究的结果表明，家具中的废气会导致室内空气中的 TCE 浓度超过监管指南。