市政管网中挥发性有机物的场地调查及蒸气入侵风险评估

许馨怡; 郭渊明; 李洪瑞; 侯成林; 张杰; 刘琦; 陈文豪

doi:10.13205/j.hjgc.202505009

市政管网中挥发性有机物的场地调查及蒸气入侵风险评估

doi: 10.13205/j.hjgc.202505009

1. 南京理工大学环境与生物工程学院, 南京 210094;
2. 北方工程设计研究院有限公司, 石家庄 050000

基金项目:

国家自然科学基金项目（42107454）；河北省自然科学基金项目（E2023519001）；中央高校基本科研业务费专项资金（30923010918）

详细信息

作者简介:
许馨怡（1998-），女，硕士研究生，主要研究方向为地下污染物的迁移和转化。mistyxu98926@126.com

通讯作者:
郭渊明（1987-），男，博士，副教授，主要研究方向为地下污染物的迁移和转化。yuanming.guo@njust.edu.cn

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出版历程
- 收稿日期: 2023-12-27
- 录用日期: 2024-04-12
- 修回日期: 2024-02-21
- 网络出版日期: 2025-09-11

Site investigation and vapor intrusion risk assessment analysis of volatile organic compounds in municipal pipeline networks

1. School of Environment & Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
2. Norendar International Ltd, Shijiazhuang 050000, China

摘要

摘要: 以市政管网中挥发性有机物（VOCs）为研究对象，对2个实际管网段开展了长时间、多频次的气体样品收集，并定量和定性分析了样品中的VOCs特征污染物，结合衰减系数法对管网内的VOCs污染物进行了蒸气入侵风险评估分析。结果表明：VOCs普遍存在于被调查的2个市政管网气体中，其中场地A管网中主要污染物为CH₂Cl₂和C₂Cl₄，场地B管网中主要污染物为CHCl₃、CCl₄、C₃H₆Cl₂和C₂Cl₄；2个场地中污染物均呈现出较强的时空波动，场地A主要污染物变异系数为26.75%~178.38%，场地B主要污染物变异系数为134.15%~202.89%；蒸气入侵风险评估结果表明，场地A由管网向室内传播的衰减系数范围为0.0028~0.30，场地B中约30%的管网段中的VOCs可能造成室内污染物浓度超标。
- 蒸气入侵 /
- 场地调查 /
- 风险评估 /
- 挥发性有机污染物（VOCs） /
- 市政管网 /
- 衰减系数
Abstract: At present， some local and national government-level technical guidelines on vapor intrusion risk assessment have been promulgated globally， but the establishment of these guidelines all take soil vapor intrusion as the main transmission path of pollutants， and only a few scholars have carried out discussions on the distribution characteristics of gaseous volatile organic compounds （VOCs） pollutants in underground pipeline networks and their migration rules to neighboring buildings. Long-term and multi-frequency gas sample collection were conducted on 2 municipal pipeline networks to investigate the constitution and distribution of VOCs. Quantitatively and qualitatively analytical measurements were performed on gas samples. The vapor intrusion risks of these VOCs were assessed using an attenuation factor approach. The results suggested that VOCs were commonly present in the gases of the two investigated municipal pipeline networks. At Site A， the main pollutants in the pipeline network were dichloromethane and tetrachloroethylene， while at Site B， the main pollutants were trichloromethane， carbon tetrachloride， 1，2-dichloropropane， and tetrachloroethylene. Both sites exhibited strong spatial and temporal fluctuations of VOCs. The variation coefficient of the main VOCs ranged from 26.75% to 178.38% at Site A， and from 134.15% to 202.89% at Site B. The results of the vapor intrusion risk assessment indicated that the attenuation factor for vapor intrusion from the sewer pipeline to indoor air ranged from 0.0028 to 0.30 at Site A. In addition，VOCs in approximately 30% of the pipeline segments had the potential to cause indoor pollutants concentrations to exceed the standards at Site B.
- vapor intrusion /
- site investigation /
- risk assessment /
- volatile organic compounds（VOCs） /
- municipal pipeline network /
- attenuation factors

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