Vapor intrusion has been an important pathway for underground contaminants entering into indoor air and posing potential human health risk,which has aroused more and more concerns in developed countries.This paper summarized overall research results, including mechanism, influence factors, assessment methods, and major difficulties identified in developed countires,including uncertainty of the extent of vapor intrusion problem,difficulty of mathematical model validation,complicated influences of building to vapor intrusion pathway,and spatial and temporal variability in field measurements.Based on the situation that in China relevant research work hasn't started, the vapor intrusion risk is high but assessment method is not practical, recommendations were provided to carry out vapor intrusion field investigation,to develop assessment model and method,and to carry out vapor intrusion mechanism research.%地下污染源通过蒸气入侵途径进入室内而威胁到人体健康,已在发达国家引起广泛关注.综述了国外有关蒸气入侵的机理、主要影响因素、评估方法等研究进展,并分析存在蒸气入侵程度难以确定,数学评估模型验证困难,建筑物对入侵途径影响复杂,以及实测数据时空差异较大等主要问题.针对我国目前蒸气入侵领域研究尚属空白,蒸气入侵潜在风险较大,且风险评估针对性不够等问题,提出在国内开展蒸气入侵实测调查研究,建立适合国内情况的评估模型和评估方法,以及开展蒸气入侵机理研究等建议.
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