Abstract:
:Hydroxylated polybrominated diphenyl ethers (OH-PBDEs) along with methoxylated polybrominated diphenyl ethers (MeO-PBDEs) have been frequently identified as natural compounds in marine environment and also assumed as metabolites of PBDEs. In the present study, nine OH-PBDE, nine MeO-PBDE and 10 PBDE congeners were studied in the sewage sludge collected from 36 municipal wastewater treatment plants (WWTPs) in 27 cities of China. The results suggest that OH-PBDEs and PBDEs are ubiquitous in sewage sludge in China, however, methoxylated PBDEs were not detectable. Composition profiles of detected OH-PBDE congeners were different depending on the sampling location. ΣOH-PBDEs in WWTPs sludge ranged from 0.04 to 2.24 ng g(-1) dry weight (mean: 0.35 ng g(-1) dry weight). The total amount of the two most prominent congeners (6-OH-BDE-47+2'-OH-BDE-68) accounted for about 53.3-100% of the sum of all six identified congeners. A significant linear relationship was found between 6-OH-BDE-47 and 2'-OH-BDE-68. A distinct geographical distribution of ΣOH-PBDEs was observed with greater concentrations of OH-PBDEs at coastal areas than inland regions in China.
journal_name
Chemospherejournal_title
Chemosphereauthors
Sun J,Liu J,Liu Q,Ruan T,Yu M,Wang Y,Wang T,Jiang Gdoi
10.1016/j.chemosphere.2012.10.034subject
Has Abstractpub_date
2013-03-01 00:00:00pages
2388-95issue
9eissn
0045-6535issn
1879-1298pii
S0045-6535(12)01273-8journal_volume
90pub_type
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