期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 56, 期 17, 页码 12228-12236出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.2c02517
关键词
inadvertent PCBs; emission; dust migration; source characterization; exposure assessment; PCB-11; indoor air
资金
- US EPA Region 10 Resource Conservation and Recovery (RCRA) Program
- Region 10 Children's Health Program
- Region 10 Regional Applied Research Effort (RARE) Program
- EPA's Office of Resource Conservation and Recovery (ORCR)
In this research, 39 consumer products were analyzed for PCB congeners, and iPCBs were detected in seven products, with PCB-11 being the most common congener. The study also found that PCB-11 was emitted to air from one product and migrated to house dust.
Although commercial polychlorinated biphenyl (PCB) production was banned in 1979 under the Toxics a variety of chemical production processes continues to contaminate products and waste streams. In this research, a total of 39 consumer products purchased from local and online retailer stores were analyzed for 209 PCB congeners. Inadvertent PCBs (iPCBs) were detected from seven products, and PCB-11 was the only congener detected in most of the samples, with a maximum concentration exceeding 800 ng/g. Emission of PCB-11 to air was studied from one craft foam sheet product using dynamic microchambers at 40 degrees C for about 120 days. PCB-11 migration from the product to house dust was also investigated. The IAQX program was then employed to estimate the emissions of PCB-11 from 10 craft foam sheets to indoor air in a 30 m3 room at 0.5 h-1 air change rate for 30 days. The predicted maximum PCB-11 concentration in the room air (156.8 ng/m3) and the measured concentration in dust (20 ng/g) were applied for the preliminary exposure assessment. The generated data from multipathway investigation in this work should be informative for further risk assessment and management for iPCBs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据