title: [Characteristics of gaseous pollutants distribution during remedial excavation at a volatile organic compound contaminated site].
abstract: Volatile and semi-volatile organic compounds (VOCs/SVOCs) are commonly identified contaminants in industrial contaminated sites in China. VOCs migrate easily in the environment due to their relatively high volatilities. When disturbed during excavation, for example, VOCs in the soil release to the air in high concentrations within relatively short period of time, joepodizing the health of the sorrounding population, if not appropriately protected. In this study, distribution of gas phase VOCs was monitored during excavation of a site remediation project, using a combined method of field testing instrument and gas phase sampling tubes. Monitoring results indicated that gas phase concentration decreased with distance, exhibiting an alternating peak-and-valley pattern in the down-wind direction. The monitoring results could be stimulated using Gaussian Puff Model. Remediation site health and safety zoning method was developed combining appropriate workplace health and safety air limits and site monitoring results. Personal protection measures deemed appropriated for each safety zone were proposed.
authors.forename: Ping
authors.initials: P
authors.lastname: Gan
authors.forename: Yue-Wei
authors.initials: YW
authors.lastname: Yang
authors.forename: Zeng-Qiang
authors.initials: ZQ
authors.lastname: Fang
authors.forename: Shu-Qian
authors.initials: SQ
authors.lastname: Guo
authors.forename: Yan
authors.initials: Y
authors.lastname: Yu
authors.forename: Jian-Li
authors.initials: JL
authors.lastname: Jia
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring; D052918:Environmental Restoration and Remediation; D006801:Humans; D016273:Occupational Exposure; D012987:Soil / Q000737:chemistry; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D012987:Soil; D055549:Volatile Organic Compounds