重庆市地下商场TVOC污染调查及来源分析

摘要

In order to know the occurrence and pollution source of TVOC (total volatile organic compounds) in underground stores in Chongqing, the portable VOCs gas detector (ppbRAE) was used to measure indoor TVOC concentration of 17 underground stores in Chongqing according to the Technical Rules of Health Monitoring for Public Places, and affecting factors of indoor VOCs in underground stores were analyzed. The research results indicate that pollution of VOCs in indoor air of underground stores in Chongqing is serious, and there are 9 underground stores with TVOC concentration exceeding the national standard in the 17 underground stores, and the exceeding rate reaches 52.9%. The VOCs pollutions are more serious in oversize underground stores than those in small underground stores. The exceeding rates of TVOC average concentration of seven oversize underground stores and ten small underground stores are 85.7% and 30%, respectively. The VOCs pollutions in indoor air of underground stores in Chongqing mainly come from decoration and merchandises sold, and VOCs in outdoor air have no effect on TVOC concentration in indoor air of underground stores.%为了解重庆市主城区地下商场室内TVOC污染状况和污染来源,根据国家《公共场所卫生监测技术规范》,使用ppbRAE手持式VOCs气体检测仪对重庆市主城区的17个地下商场室内TVOC质量浓度进行检测,并对商场内VOCs的影响因素进行分析.研究结果表明:重庆市地下商场室内TVOC质量浓度超标现象严重,在监测的17个地下商场中,共有9个商场的TVOC浓度超过国家标准,超标率为52.9％;大型地下商场的VOCs污染比中小型地下商场严重,7个大型地下商场室内TVOC平均质量浓度超标率为85.7％,而10个中小型地下商场室内TVOC平均质量浓度超标率为30％;商场装修和售卖的商品是重庆市地下商场室内空气中VOCs的主要来源,室外VOCs对商场内TVOC质量浓度基本没有影响.