| Title: | "Decabrominated Diphenyl Ethers (BDE-209) in Chinese and Global Air: Levels, Gas/Particle Partitioning, and Long-Range Transport: Is Long-Range Transport of BDE-209 Really Governed by the Movement of Particles?" |
| Author(s): | Li YF; Qiao LN; Ren NQ; Sverko E; Mackay D; Macdonald RW; |
| Address: | "Arctic Environment Research Group, International Joint Research Center for Persistent Toxic Substances (IJRC-PTS-AERG), State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin 150090, China. IJRC-PTS-NA , Toronto, M2N 6X9, Canada. Trent University , Peterborough, ON. K9J 7B8, Canada. Institute of Ocean Sciences , Department of Fisheries and Oceans, P.O. Box 6000, Sidney, BC V8L 4B2, Canada" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "In this paper, we report air concentrations of BDE-209 in both gas- and particle-phases across China. The annual mean concentrations of BDE-209 were from below detection limit (BDL) to 77.0 pg.m(-3) in the gas-phase and 1.06-728 pg.m(-3) in the particle-phase. Among the nine PBDEs measured, BDE-209 is the dominant congener in Chinese atmosphere in both gas and particle phases. We predicted the partitioning behavior of BDE-209 in air using our newly developed steady state equation, and the results matched the monitoring data worldwide very well. It was found that the logarithm of the partition quotient of BDE-209 is a constant, and equal to -1.53 under the global ambient temperature range (from -50 to +50 degrees C). The gaseous fractions of BDE-209 in air depends on the concentration of total suspended particle (TSP). The most important conclusion derived from this study is that, BDE-209, like other semivolatile organic compounds (SVOCs), cannot be sorbed entirely to atmospheric particles; and there is a significant amount of gaseous BDE-209 in global atmosphere, which is subject to long-range atmospheric transport (LRAT). Therefore, it is not surprising that BDE-209 can enter the Arctic through LRAT mainly by air transport rather than by particle movement. This is a significant advancement in understanding the global transport process and the pathways entering the Arctic for chemicals with low volatility and high octanol-air partition coefficients, such as BDE-209" |
| Keywords: | *Air Pollutants Atmosphere China *Environmental Monitoring Gases *Halogenated Diphenyl Ethers; |
| Notes: | "MedlineLi, Yi-Fan Qiao, Li-Na Ren, Nan-Qi Sverko, Ed Mackay, Donald Macdonald, Robie W eng Research Support, Non-U.S. Gov't 2016/12/16 Environ Sci Technol. 2017 Jan 17; 51(2):1035-1042. doi: 10.1021/acs.est.6b05395. Epub 2016 Dec 27" |
