Polybrominated diphenyl ethers (PBDEs) in sediments and mussel tissues from Hong Kong marine waters

Department of Biology and Chemistry, Centre for Coastal Pollution and Conservation, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, People's Republic of China.
Marine Pollution Bulletin (Impact Factor: 2.99). 12/2005; 50(11):1173-84. DOI: 10.1016/j.marpolbul.2005.04.025
Source: PubMed

ABSTRACT Sediments and green-lipped mussels, Perna viridis, were used to investigate concentrations of polybrominated diphenyl ethers (PBDEs) in Hong Kong's marine environment. PBDEs have been used extensively over the past two decades as flame retardants in polymer additives for a variety of plastics, computers, furniture, building materials, and fabrics. Many measurements of PBDEs in various environmental matrices have been reported from Belgium, Holland, Japan, Europe and North America, but few measurements are available for the southeast Asian region and Hong Kong. PBDE congeners (n=15) were measured in 13 sediments and nine mussel samples, taken from Hong Kong marine waters. The Sigma15PBDEs in sediments ranged between 1.7 and 53.6 ng g(-1) dry wt, with the highest concentrations located around the most heavily populated areas of Victoria Harbour and Sai Kung, while the lowest concentrations of Sigma15PBDEs were found at more remote locations of Sha Tau Kok, Wong Chuk Bay, Castle Peak Bay, and Gold Coast. Sigma15PBDEs ranged from 27.0 to 83.7 ng g(-1) dry wt of mussel tissues. Although not identical, most of the congeners in sediments were found in mussel tissues, with BDE-47, BDE-99, BDE-153 and BDE-183 being the most prominent in both matrices. On the basis of a literature survey, the concentrations of PBDEs reported in Hong Kong sediments and mussel tissues are amongst the highest in the world.

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Available from: Bruce J Richardson, May 20, 2014
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    • "In the current study, the magnitude of PBDEs contamination from Kuwait coast is many folds lower than those reported from Hong Kong coast (Liu et al., 2005), Korean coast (Ramu et al., 2010) and USA (Oros et al., 2005). Unlike these coastal sites from different countries, Kuwait coastal area host scarce population with relatively minimum shipping activities and electronic industries. "
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    ABSTRACT: Several classes of Organohalogenated contaminants (OHCs) were determined in sediments and bivalves collected from Kuwait coast. The levels and profile of polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and polybrominated diphenyl ethers (PBDEs) were compared in both sediments and bivalves. PCB-153 and -138 were the major contributors towards total OHCs followed by DDT and its metabolites (DDTs). The higher contribution of DDTs (~40%) and BDE-47 (~15%) in bivalves as compared to that in associated sediments indicated high biota-sediment accumulation factors (BSAF). Higher BSAF (values for heavier PCBs, DDTs and PBDEs) also indicated their high accumulation potential from sediment into associated biota at most of the studied locations. Overall, OHCs in sediments and bivalves measured in current study were lower than those reported in the literature worldwide. Most of the sediment concentrations of OHCs (ng/g, dry weight) were in the range of permissible guideline values proposed by Canadian Sediment Quality Guidelines (CSQGs), with few exceptions for DDTs (5 ng/g) and PCBs (22.7 ng/g). Similarly, 10% of bivalve samples contained high levels (ng/g, lipid weight) of PCBs (300) and DDTs (150) and were above the set safety benchmarks. This study establishes baseline for future monitoring programs.
    Ecotoxicology and Environmental Safety 09/2015; 122(December 2015):432-439. DOI:10.1016/j.ecoenv.2015.09.013 · 2.76 Impact Factor
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    • "ng/g d.w.) was similar to levels reported near petrochemical sites in Onsan Bay, Korea (39–59 ng/g d.w.; Ramu et al., 2010), but lower than levels due to inland point sources such as a canal in Tianjin that receives effluents from municipal WWTPs and untreated industrial wastewater (5.59–634 ng/g d.w.; Zhang et al., 2013), and an e-waste recycling area in China (0.38–284 ng/g d.w.; Gao et al., 2011). The overall PBDE concentrations (ng/g d.w.) in Jinhae Bay sediment were in the same range as in Yangtze River Delta sediments (0.16–95 ng/g d.w.; Chen et al., 2006), the Hong Kong coast (1.7–54 ng/g d.w.; Liu et al., 2005), Singapore coast (3.4–14 ng/g d.w.; Wurl and Obbard, 2005), Australian coast (not detected–61 ng/g d.w.; Toms et al., 2008), San Francisco estuary (2.11–7.95 ng/g d.w.; Klosterhaus et al., 2012), and the Strait of Georgia, Canada (0.09–12.7 ng/g d.w.; Grant et al., 2011), but were lower than those in the Scheldt estuary, The Netherlands (262–1660 ng/g d.w.; Verslycke et al., 2005). "
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    ABSTRACT: The contamination status and potential sources of hexabromocyclododecanes (HBCDs) in the coastal environment were investigated using sediment samples from a semi-enclosed bay in South Korea. HBCDs displayed a very different distribution profile compared to polybrominated diphenyl ethers (PBDEs) and nonylphenol, indicating different emission sources inside the bay. A strong enrichment of HBCDs was found near aquaculture areas that used expanded polystyrene (EPS) buoys, which were confirmed to be the main source of HBCDs following an analysis of buoys collected from a market and the coast. EPS buoys contained large amounts of HBCDs, with lower levels in the outside layer than inside, implying the leaching of HBCDs from the surface throughout their lifetime. This was reflected in the high levels of HBCDs measured in coastal sediments near aquaculture farms. A wastewater treatment plant was found to be an additional source of HBCDs. A dated core sample revealed an increase in HBCD concentrations over time. The isomeric profiles for most of the surface and core sediment samples were dominated by the γ-diastereoisomer.
    Science of The Total Environment 02/2015; 505:290–298. DOI:10.1016/j.scitotenv.2014.10.019 · 4.10 Impact Factor
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    • "For Hong Kong, ∑ 15 PBDEs of 1.7–53.6 ng g −1 dw was reported (Liu et al. 2005), and in Fuhe River and Baiyangdian Lake in China, ∑PBDEs of 300.7 and 23.7 ng g −1 dw were reported (Hu et al. 2010). Others include USA, 0.72–148 ng g −1 d w in Niagara River (Samara et al. 2006); Korea, 2.03–2 253 ng g −1 dw in the industrialised bay of Korea (Moon et al. 2007); Spain, 0.29–0.56 "
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    ABSTRACT: Polybrominated diphenyl ethers (PBDEs) are known to be persistent, endocrine disruptors and bioaccumulative and can cause adverse health effects in animals and humans. In this study, river and landfill sediment samples were collected from selected rivers and municipal solid waste landfill (MSWL) sites across Gauteng Province in South Africa to determine the levels of common PBDEs (BDE-17, BDE-47, BDE-99, BDE-100, BDE-153, BDE-154, BDE-183 and BDE-209). The mean and median concentrations of Σ8 PBDEs from river sediment samples was 2.4 and 0.4 ng g−1, respectively, and a range of 0.8–114 ng g−1. The highest concentration of Σ8 PBDEs (43.6 ng g−1) was observed at Jukskei River with more than two orders of magnitude greater than the rest. The observed total PBDE concentrations in landfill sediment and leachate samples ranged from 0.8 to 8.4 ng g−1 and 127–3,702 pg L−1 for the two matrices. BDE-209 was predominantly detected in most of the sediment samples. Two of the MSWLs which are lined with geomembranes gave the highest concentrations of ∑7 PBDEs (2,678 and 3,702 pg L−1). Correlation values for ∑7 PBDEs versus Co (r = 0.65), Cu (r = 0.52), Mn (r = 0.10), Mg (r = 0.76), Ca (r = 0.66) and Ni (r = 0.77) with a statistical significance (p < 0.05) were observed except for Na, Cr, Pb, K, Fe and Zn (p > 0.05). The observed positive correlation may suggest a possible influence of trace metals on PBDE concentrations in leachates. Furthermore, a test of relationship between major anions and PBDEs yielded positive relationship with Cl− (r = 0.94, p = 0.16), F− (r = 0.97, p = 0.21), Br− (r = 0.6, p = 0.29) and NO3 2− (r = 0.96, p = 0.08) with an insignificant statistical difference. However, evaluation of the relationship between some water quality parameters (pH, dissolved oxygen and electrical conductivity) gave negative correlation with PBDE concentrations.
    Environmental Science and Pollution Research 08/2014; 22(3). DOI:10.1007/s11356-014-3443-1 · 2.83 Impact Factor
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