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Levels and Isomer Profiles of Dechlorane Plus in Chinese Air.
- Source :
-
Environmental Science & Technology . 9/1/2008, Vol. 42 Issue 17, p6476-6480. 5p. - Publication Year :
- 2008
-
Abstract
- The highly chlorinated flame retardant, Dechlorane Plus (DP), was measured in air across 97 Chinese urban and rural sites. DP was detected in 51 of these sites, with a mean air concentration in urban centers (15.6 ± 15.1 pg m-3) approximately 5 times greater than those measured in rural areas (3.5 ± 5.6 pg m-3). These DP levels were likely attributable to local sources rather than trans-boundary influences. Elevated urban levels were measured along the southeastern coast and in south-central China; the highest concentration was observed in the city of Kunming (66 pg m-3). Few of the urban samples (7%) and a majority of the rural samples (62%) were below the method detection limit, notably areas in rural central and northeastern China. The mean fractional abundance of the syn-DP isomer (fsyn) in all samples was 0.33 ± 0.10, values indistinguishable from that of a commercial mixture (fsyn = 0.35). This paper represents the first report on OP levels in Chinese air, together with isomeric ratio profiles from urban and rural sites. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0013936X
- Volume :
- 42
- Issue :
- 17
- Database :
- Academic Search Index
- Journal :
- Environmental Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 34251879
- Full Text :
- https://doi.org/10.1021/es800479c