Abstract
Concentrations of fourteen polychlorinated biphenyls (PCBs) in runoff samples were investigated, which collected from the different sites in the city, road in residential area, parking lot, drainage outlet, roof and main transport road. The source of PCBs in urban runoff was explored using multivariate statistical analysis. The results showed that the concentrations and detection rate of PCBs varied at different site in a small range. PCBs concentration in roof runoff was higher than that in main transport road, drainage outlet, parking lot and residential area road runoff (mean values were 337.9, 306.3, 240.1, 193.2, 172.7ng/L). PCBs in runoff were dominated by penta-CBs, which occupied 31.4%~56.2% of total PCBs. There was no significant correlation between the concentrations of PCBs and SS. Multivariate statistical analyzing demonstrated that high and low chlorinated PCBs in runoff came from different sources. Moreover, values of 2, 3, 7, 8-tetrachlorodibenzodioxin (TCDD, dioxin) equivalents (TEQs) in drainage outlet, residential area road and parking lot runoff were relatively higher (up to 4.4, 4.1, 4.0 ng/L, respectively), which might be related with the higher concentrations of CB126.
| Original language | English |
|---|---|
| Pages (from-to) | 546-552 |
| Number of pages | 7 |
| Journal | Zhongguo Huanjing Kexue/China Environmental Science |
| Volume | 33 |
| Issue number | 3 |
| State | Published - Mar 2013 |
Keywords
- Functional zoning
- Pollution characteristic
- Polychlorinated biphenyls (PCBs)
- Storm runoff
- Toxicological assessment
