Distribution of polybrominated diphenyl ethers and decabromodiphenylethane in surface sediments from the Bering Sea, Chukchi Sea, and Canada Basin

Cai, Minggang; Hong, Qingquan; Wang, Y.; Luo, Xiao-Jun; Chen, S.J.; Cai, Minghong; Qiu, Cangrong; Huang, Shanshan; Mai, Bi-Xian

doi:10.1016/j.dsr2.2011.05.006

Cited by 42 publications

(21 citation statements)

References 52 publications

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“…As for coastal sediments, concentrations varied from n.d. to 0.35 ng g À1 dw for P PBDEs and from n.d. to 0.09 ng g À1 dw for P aBFRs. The levels of P PBDEs and PBEB in this study were similar to those in the Dalian coastal area (Wang et al, 2011), three bays from South America (Baron et al, 2013) and the western Arctic Ocean (Cai et al, 2012).…”

Section: Concentrations and Comparisons With Other Studiessupporting

confidence: 60%

“…In comparison, DBDPE concentrations (1.13 ng g À1 dw at site H1, 37.2 ng g À1 dw at site H2, and 49.9 ng g À1 dw at site H3) in the three river sediment samples were one to two orders of magnitude lower than those in the Dongjiang River (n.d. e 1728 ng g À1 dw) , which runs across the major electronic/electrical manufacturing base of the Pearl River Delta (PRD) . The DBDPE concentrations (0.16e39.7 ng g À1 dw) in all coastal sediments in this study were similar to those in the Pearl River estuary (PRE) (n.d. e 30.5 ng g À1 dw) and Ebro and Llobregat River basins (n.d e 31.5 ng g À1 dw) (Baron et al, 2014), but higher than those in marine sediments, such as those from the Yangtze River Delta (0.18e1.57 ng g À1 dw) , Stockholm coast in Sweden (n.d. e 11 ng g À1 dw) (Ricklund et al, 2010), three bays in South America (n.d. e 2.26 ng g À1 dw) (Baron et al, 2013), and the western Arctic Ocean (n.d. e 0.45 ng g À1 dw) (Cai et al, 2012). The DBDPE concentrations in marine sediments of northern China were at a moderate level, comparatively.…”

Section: Concentrations and Comparisons With Other Studiesmentioning

confidence: 98%

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Polybrominated diphenyl ethers (PBDEs) and alternative brominated flame retardants (aBFRs) in sediments from four bays of the Yellow Sea, North China

Zhen

Tang

Xie

et al. 2016

Environmental Pollution

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a b s t r a c tThe distribution characteristics and potential sources of polybrominated diphenyl ethers (PBDEs) and alternative brominated flame retardants (aBFRs) were investigated in 54 surface sediment samples from four bays (Taozi Bay, Sishili Bay, Dalian Bay, and Jiaozhou Bay) of North China's Yellow Sea. Of the 54 samples studied, 51 were collected from within the four bays and 3 were from rivers emptying into Jiaozhou Bay. Decabromodiphenylethane (DBDPE) was the predominant flame retardant found, and concentration ranged from 0.16 to 39.7 ng g À1 dw and 1.13e49.9 ng g À1 dw in coastal and riverine sediments, respectively; these levels were followed by those of BDE 209, and its concentrations ranged from n.d. to 10.2 ng g À1 dw and 0.05e7.82 ng g À1 dw in coastal and riverine sediments, respectively. The levels of DBDPE exceeded those of decabromodiphenyl ether (BDE 209) in most of the samples in the study region, whereas the ratio of DBDPE/BDE 209 varied among the four bays. This is indicative of different usage patterns of brominated flame retardants (BFRs) and also different hydrodynamic conditions among these bay areas. The spatial distribution and composition profile analysis indicated that BFRs in Jiaozhou Bay and Dalian Bay were mainly from local sources, whereas transport from Laizhou Bay by coastal currents was the major source of BFRs in Taozi Bay and Sishili Bay. Both the P PBDEs and P aBFRs (sum of pentabromotoluene (PBT), 2,3-diphenylpropyl-2,4,6-tribromophenyl ether (DPTE), pentabromoethylbenzene (PBEB), and hexabromobenzene (HBB)) were at low concentrations in all the sediments. This is probably attributable to a combination of factors such as low regional usage of these products, atmospheric deposition patterns, coastal currents transportation patterns, and degradation processes for higher BDE congeners. This paper is the first study that has investigated the levels of DBDPE in the coastal sediments of China's Yellow Sea.

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Section: Concentrations and Comparisons With Other Studiessupporting

confidence: 60%

Section: Concentrations and Comparisons With Other Studiesmentioning

confidence: 98%

Polybrominated diphenyl ethers (PBDEs) and alternative brominated flame retardants (aBFRs) in sediments from four bays of the Yellow Sea, North China

Zhen

Tang

Xie

et al. 2016

Environmental Pollution

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“…The Σ 24 PBDEs (sum of the 24 detected PBDE congeners) varied from <MDL to 67.8 pg g −1 dw, with an average of 9.8 ± 11.9 pg g −1 dw along the two cruises. Only one very high concentration was observed at Station SR12 located toward the edge of the continental shelf of the Chukchi Sea (67.8 pg g −1 dw) during CHINARE 4, although this value is well within the range of ΣPBDE (without BDE‐209) concentrations measured in the Canada Basin sediments during CHINARE 3 [ Cai et al ., ]. The PBDE levels did not exhibit large geographical differences between the Bering Sea, Bering Strait, Chukchi Sea, Canadian Basin, and Iceland Stations (supporting information Figure S2), with arithmetic averages of 7.7 ± 9.5 pg g −1 dw, 7.9 ± 10.0 pg g −1 dw, 12.6 ± 16.6 pg g −1 dw, 10.7 ± 10.5 pg g −1 dw, 7.1 ± 1.8 pg g −1 dw, respectively.…”

Section: Resultsmentioning

confidence: 87%

Persistent organic pollutants in ocean sediments from the North Pacific to the Arctic Ocean

Halsall

Crosse

et al. 2015

JGR Oceans

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Concentrations of polychlorinated biphenyls (PCBs), organochlorine pesticides (OC pesticides), and polybrominated diphenyl ethers (PBDEs) are reported in surficial sediments sampled along cruise transects from the Bering Sea to the central Arctic Ocean. OCs and PCBs all had significantly higher concentrations in the relatively shallow water (<500 m depth) of the Bering-Chukchi shelf areas (e.g., RPCB 286 6 265 pg g 21 dw) compared to the deeper water regions (>500 m) of the Bering Sea and Arctic Ocean (e.g., Canada Basin RPCB 149 6 102 pg g 21 dw). Concentrations were similar to, or slightly lower than, studies from the 1990s, indicating a lack of a declining trend. PBDEs (excluding BDE-209) displayed very low concentrations (e.g., range of median values, 3.5-6.6 pg/g dw). In the shelf areas, the sediments comprised similar proportions of silt and clay, whereas the deep basin sediments were dominated by clay, with a lower total organic carbon (TOC) content. While significant positive correlations were observed between persistent organic pollutant (POP) concentrations and TOC (Pearson correlation, r 5 0.66-0.75, p <0.05), the lack of strong correlations, combined with differing chemical profiles between the sediments and technical formulations (and/or marine surface waters), indicate substantial chemical processing during transfer to the benthic environment. Marked differences in sedimentation rates between the shallow and deeper water regions are apparent (the 5 cm-depth grab samples collected here representing 100 years of accumulation for the shelf sediments and 1000 years for the deeper ocean regions), which may bias any comparisons. Nonetheless, the sediments of the shallower coastal arctic seas appear to serve as significant repositories for POPs deposited from surface waters.

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“…Considering the PBDE sediment contamination, it is evident that the important publications are focused on the study of the main congener composition, highlighting the presence of BDE-209 as the main congener affecting the superficial sediments (Gerecke et al 2003;Voorspoels et al 2003;Sawal et al 2004;Söderström et al 2004;Cai et al 2012). Klosterhaus et al (2012) recently published a study regarding the presence of BFRs in San Francisco Bay sediments considering PBDEs , HBCD, PBEB, BTBPE, HBB, and DBDPE.…”

Section: Comparison With Other Studiesmentioning

confidence: 97%

PBDE, HBCD, and novel brominated flame retardant contamination in sediments from Lake Maggiore (Northern Italy)

Poma

Roscioli

Guzzella

2014

Environ Monit Assess

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The reduction in the use of polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCD) has opened the way for the introduction of novel brominated flame retardants (NBFRs) in place of the banned formulations. Important representatives of this group are decabromodiphenyl ethane (DBDPE), 1,2-bis(2,4,6-tribromophenoxy) ethane (BTBPE), hexabromobenzene (HBB), and pentabromoethylbenzene (PBEB). In this study, the contamination due to NBRFs was investigated for the first time in Italy in the sediments of Lake Maggiore. The aim of the research was to characterize in detail the possible presence of temporal trends and/or to identify potential sources of contamination. The study also considered the PBDE and HBCD lake sediment's current contamination. The analytical results showed that sediments in Lake Maggiore and its tributary rivers had weak concentrations of PBEB, HBB, and BTBPE, but they did not have a negligible/insignificant contamination of HBCD (up to 23.7 ng/g dry weight (d.w.)). The determination of PBDEs in sediments showed that BDE-209 was the predominant congener (up to 217 and 28 ng/g d.w. in river and lake sediments, respectively). DBDPE was detected in the sediments with relevant concentrations (up to 280 ng/g d.w in the River Boesio sediments). The positive correlation of DBDPE with BDE-209 confirmed the wide and important use of this compound in the Lake Maggiore basin and the hypothesis that this compound will soon become one of the most important NBFRs used in Northern Italy. The contamination of Lake Maggiore sediments due to PBDEs, HBCD, and NBFRs were comparable to other worldwide situations.

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Distribution of polybrominated diphenyl ethers and decabromodiphenylethane in surface sediments from the Bering Sea, Chukchi Sea, and Canada Basin

Cited by 42 publications

References 52 publications

Polybrominated diphenyl ethers (PBDEs) and alternative brominated flame retardants (aBFRs) in sediments from four bays of the Yellow Sea, North China

Polybrominated diphenyl ethers (PBDEs) and alternative brominated flame retardants (aBFRs) in sediments from four bays of the Yellow Sea, North China

Persistent organic pollutants in ocean sediments from the North Pacific to the Arctic Ocean

PBDE, HBCD, and novel brominated flame retardant contamination in sediments from Lake Maggiore (Northern Italy)

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