Brominated flame retardants in the urban atmosphere of Northeast China: Concentrations, temperature dependence and gas-particle partitioning
Qi, H; Li, WL; Liu, LY; Song, WW; Ma, WL; Li, YF
HERO ID
2343693
Reference Type
Journal Article
Year
2014
Language
English
PMID
| HERO ID | 2343693 |
|---|---|
| In Press | No |
| Year | 2014 |
| Title | Brominated flame retardants in the urban atmosphere of Northeast China: Concentrations, temperature dependence and gas-particle partitioning |
| Authors | Qi, H; Li, WL; Liu, LY; Song, WW; Ma, WL; Li, YF |
| Journal | Science of the Total Environment |
| Volume | 491-492 |
| Page Numbers | 60-66 |
| Abstract | 57 pairs of air samples (gas and particle phases) were collected using a high volume air sampler in a typical city of Northeast China. Brominated flame retardants (BFRs) including 13 polybrominated diphenyl ethers (PBDEs, including BDEs 17, 28, 47, 49, 66, 85, 99, 100, 138, 153, 154, 183, and 209) and 9 alternative BFRs (p-TBX, PBBZ, PBT, PBEB, DPTE, HBBZ, γ-HBCD, BTBPE, and DBDPE) were analyzed. The annual average total concentrations of the 13 PBDEs and the 9 alternative BFRs were 69pg/m(3) and 180pg/m(3), respectively. BDE 209 and γ-HBCD were the dominant congeners, according to the one-year study. The partial pressure of BFRs in the gas phase was significantly correlated with the ambient temperature, except for BDE 85, γ-HBCD and DBDPE, indicating the important influence of ambient temperature on the behavior of BFRs in the atmosphere. It was found that the gas-particle partitioning coefficients (logKp) for most low molecular weight BFRs were highly temperature dependent as well. Gas-particle partitioning coefficients (logKp) also correlated with the sub-cooled liquid vapor pressure (logPL(o)). Our results indicated that absorption into organic matter is the main control mechanism for the gas-particle partitioning of atmospheric PBDEs. |
| Doi | 10.1016/j.scitotenv.2014.03.002 |
| Pmid | 24661943 |
| Wosid | WOS:000339534700009 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal: ISSN: |
| Is Public | Yes |
| Language Text | English |
| Keyword | Polybrominated diphenyl ethers; Alternative brominated flame retardants; Temperature dependence; Gas-particle partitioning; Atmosphere |