TY - JOUR
T1 - Exposure of Hong Kong residents to PBDEs and their structural analogues through market fish consumption
AU - Wang, Hong Sheng
AU - Du, Jun
AU - Ho, Ka Lok
AU - Leung, Ho man
AU - Lam, Michael Hon Wah
AU - Giesy, John P.
AU - Wong, Chris Kong Chu
AU - Wong, Ming Hung
N1 - Funding Information:
The authors thank Mr. K.W. Chan, Ms. Y.Q. Huang and Ms. Y.G. Zhao for technical assistance. This research was supported by the Research Grants Council of the University Grants Committee of Hong Kong (Collaborative Research Fund, HKBU1/CRF/08 and Special Equipment Grant, HKBU09 ), and the Mini-AOE (Area of Excellence) Fund from Hong Kong Baptist University. Prof. Giesy was supported by the Canada Research Chair program and an at large Chair Professorship at the Department of Biology and Chemistry and State Key Laboratory in Marine Pollution, City University of Hong Kong.
PY - 2011/8/15
Y1 - 2011/8/15
N2 - High concentrations of polybrominated diphenyl ethers (PBDEs) and their structural analogues (such as methoxylated (MeO) and hydroxylated (OH) PBDEs) had been observed in environmental samples and human tissues. This study evaluated the occurrence, potential source and human exposure of these organobrominated compounds via market fish consumption in Hong Kong. The contamination of 22 PBDEs, 7 MeO-BDEs, 15 OH-BDEs and 3 bromophenols (BRPs) were analyzed in 20 fish species (279 samples). The estimated daily intakes of PBDEs, MeO-BDEs, OH-BDEs and BRPs via fish consumption ranged from 4.4 to 14, 0.50 to 4.3, 0.02 to 0.43 and 0 to 0.21ng/kgday for Hong Kong residents, respectively, based on 50th and 95th centile concentrations. BDE-47 and 99 were found to be the major PBDE congeners while 2'-MeO-BDE-68, 6-MeO-BDE-47 and 3-MeO-BDE-47 were the dominant MeO-BDEs. Concentrations of OH-BDEs and BRPs were 10-100-fold less than those of PBDEs, with small frequencies of detection (max 36.7%). Dietary intake of PBDEs via fish consumption by Hong Kong residents was greater than many developed countries, such as the USA, UK, Japan and Spain. To our knowledge, this is the first report to estimate the dietary intake of MeO/OH-BDEs and BRPs via fish consumption. Our results indicated that the toxicity potential of these compounds should not be neglected.
AB - High concentrations of polybrominated diphenyl ethers (PBDEs) and their structural analogues (such as methoxylated (MeO) and hydroxylated (OH) PBDEs) had been observed in environmental samples and human tissues. This study evaluated the occurrence, potential source and human exposure of these organobrominated compounds via market fish consumption in Hong Kong. The contamination of 22 PBDEs, 7 MeO-BDEs, 15 OH-BDEs and 3 bromophenols (BRPs) were analyzed in 20 fish species (279 samples). The estimated daily intakes of PBDEs, MeO-BDEs, OH-BDEs and BRPs via fish consumption ranged from 4.4 to 14, 0.50 to 4.3, 0.02 to 0.43 and 0 to 0.21ng/kgday for Hong Kong residents, respectively, based on 50th and 95th centile concentrations. BDE-47 and 99 were found to be the major PBDE congeners while 2'-MeO-BDE-68, 6-MeO-BDE-47 and 3-MeO-BDE-47 were the dominant MeO-BDEs. Concentrations of OH-BDEs and BRPs were 10-100-fold less than those of PBDEs, with small frequencies of detection (max 36.7%). Dietary intake of PBDEs via fish consumption by Hong Kong residents was greater than many developed countries, such as the USA, UK, Japan and Spain. To our knowledge, this is the first report to estimate the dietary intake of MeO/OH-BDEs and BRPs via fish consumption. Our results indicated that the toxicity potential of these compounds should not be neglected.
KW - Bromophenols
KW - Dietary intake
KW - Fish
KW - Hong Kong
KW - Hydroxylated
KW - Methoxylated
KW - PBDE
UR - http://www.scopus.com/inward/record.url?scp=79959715321&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2011.05.036
DO - 10.1016/j.jhazmat.2011.05.036
M3 - Journal article
C2 - 21658843
AN - SCOPUS:79959715321
SN - 0304-3894
VL - 192
SP - 374
EP - 380
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 1
ER -