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Levels of polybrominated diphenyl ethers in surface soil of Guiyu and the associated health risk to children
Received date: 2016-01-11
Online published: 2016-04-30
A total of 12 surface soil samples were collected from Guiyu of Guangdong Province, and the concentrations of polybrominated diphenyl ethers (PBDEs) including 14 congeners were determined. The results showed that the area was contaminated by PBDEs. The total concentrations of PBDEs ranged from 76.5 to 13 354.0 ng/(g dw) (dw meas dry weight), which were much higher than other regions. Among the 14 congeners, BDE209 was the prominent congener, followed by BDE47, BDE99, and BDE183, which indicated that technical Deca-BDE product was the main source of the PBDEs in the sampling sites, and technical Penta- and Oct-BDEs were also the important contributors. The estimated daily intakes and uptakes of PBDEs via oral ingestion and dermal contact by children were calculated, and the associated health risks at non-carcinogenic endpoint were assessed by using hazard quotient (HQ). The results showed that the estimated daily intakes of PBDEs vary from 31.1 to 5 430.0 and from 7.7 to 1 335.0 ng/d, respectively, and the dermal contact was the main pathway. Whereas, when the uptake efficiency of PBDEs was added into the calculation, the estimated daily uptakes of PBDEs decreased to 0.3～54.3 and 1.3～184.0 ng/d, respectively, and the oral ingestion was the main pathway then. In both cases, the HQ values were much less than 1, indicating that PBDEs in the area would not lead significant health risk to the local children.
LOU Sufang1, WANG Xinxin1, JIANG Zi’an1, LU Shaoyou2, YU Yingxin1 . Levels of polybrominated diphenyl ethers in surface soil of Guiyu and the associated health risk to children[J]. Journal of Shanghai University, 2016 , 22(2) : 141 -150 . DOI: 10.3969/j.issn.1007-2861.2016.01.007
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