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Abstract In order to evaluate the pollution status, congener distribution, human exposure of polybrominated diphenyl ethers (PBDEs) at administrative places, twenty air samples were collected from administrative offices in Hangzhou from March to August in 2013. Fourteen congeners were detected using GC-ECD. Results showed that: the average concentration of PBDEs at the sampled offices were 9.57×102pg/m3. Compared with European countries, the pollution level of Hangzhou administrative sites is higher, BDE-209was the predominant congener, which accounted for about 57.4% of the total concentration. This indictes that Deca-bromodiphenyl is the major industrial source. The average concentration of PBDEs in administrative offices was 1.26 times of that in residential housings, and this difference was mainly reflected in BDE-209. The relative percentage of PBDEs in gas-solid phases was 50.0%(i.e., half of the PBDEs existed in gaseous form, and the other half was adsorbed on particulates), which may be caused by unbalanced distribution of PBDEs. In addition, the total intake of BDE-99was 2.03′102pg/(kg×d) for the administrative staff in Hangzhou, which was 21.7% lower than the daily allowable intake proposed by international standards.
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Received: 09 March 2015
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