Characterization of Trophic Transfer for Polychlorinated Dibenzo-<i>p</i>-dioxins, Dibenzofurans, Non- and Mono-ortho Polychlorinated Biphenyls in the Marine Food Web of Bohai Bay, North China

Wan, Yi; Hu, Jianying; Yang, Min; An, Lihui; An, Wenling; Jin, Xiaohui; Hattori, Tatsuya; Itoh, Masatoshi

doi:10.1021/es048657y

Cited by 93 publications

(73 citation statements)

References 40 publications

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“…26,35 No significant linear relationship was found between carbon number and the concentration−TL slope although the trend was slightly increasing (Table SI-2 of the Supporting Information and Figure 5B). The correlation between chlorine number and the concentration (l.w.…”

Section: ■ Results and Discussionmentioning

confidence: 98%

Short Chain Chlorinated Paraffins in Mollusks from Coastal Waters in the Chinese Bohai Sea

Yuan

Wang

Zhu

et al. 2012

Environ. Sci. Technol.

101

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As an extremely complex group of persistent organic pollutants (POPs) candidates in the Stockholm Convention, short chain chlorinated paraffins (SCCPs) have been of extensive concern in recent years. In this study, nine bivalve and two gastropod species were collected in 2009 to evaluate the spatial distributions and potential factors influencing the bioaccumulation of SCCPs in mollusks in the Chinese Bohai Sea. The concentrations of ∑ SCCPs in the mollusks were in the range 64.9− 5510 ng/g (dry weight) with an average chlorine content of 61.1%. C 10 and C 11 were the predominant homologue groups of SCCPs, which accounted for about 29.7% and 34.9% of ∑ SCCPs, respectively. Six and seven chlorinated substituents were the main congener groups. Mya arenaria (Mya), Mactra veneriformis (Mac), and Crassostrea talienwhanensis (Oyster, Ost) had higher average concentrations of SCCPs than other species, implying that these bivalves could be used as sentinels to indicate SCCPs contamination in this coastal region. A significant positive linear relationship was found between SCCP concentrations and lipid content of the mollusks, whereas the lipidnormalized SCCP concentrations were negatively linear-related to the trophic levels (TL), which implied that SCCPs did not show biomagnification in mollusks in this region.

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Section: ■ Results and Discussionmentioning

confidence: 98%

Short Chain Chlorinated Paraffins in Mollusks from Coastal Waters in the Chinese Bohai Sea

Yuan

Wang

Zhu

et al. 2012

Environ. Sci. Technol.

101

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“…These results no doubt indicate that some chemicals in the mixture produce estrogenic effects and others can boost or be antagonistic to estrogenic activity, or have no effect. Some toxic compounds, such as organochlorine pesticides (OCPs), xeno-estrogens (including 4-tert-octylphenol, 4-nonylphenol and bisphenol A), PCBs, PCDDs/PCDFs and mercury, have been reported in the previously studies in this area (Jin et al, 2004;Shi et al, 2005;Wan et al, 2005;Yang et al, 2005;Zhang, 2004). However, few data are available to indicate the level of contamination of estrogenic compounds in these rivers.…”

Section: Estrogenic Activity Of Sediment Samplesmentioning

confidence: 99%

Measurement of estrogenic activity in sediments from Haihe and Dagu River, China

Song

Jiang

et al. 2006

Environment International

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Sediments from two rivers in China, the Haihe and Dagu Rivers, were examined for estrogenic activity using an estrogen receptor (ER)-mediated in vitro bioassay system. ER-active compounds were isolated from sediments by Soxhlet extraction, and the crude extracts were fractionated using a florisil column into three fractions. The estrogenic activity of each extract was detected by measuring luciferase activity in the human breast cancer cell line MCF-7 transfected with a luciferase receptor gene. Significant estrogenic activity was observed in each total extract. The 17β-estradiol equivalents (E2-EQs) ranged from 8.24 to 95.28 ng E2 g − 1 dw. As a result, the relative estrogenic potencies of three fractions in this study descended in the order of Fraction 3 N Fraction 2 N Fraction 1. The results of the bioassay analysis indicated the heavy pollution status of these sites with estrogenic contaminants. In this study, five selected chemicals, the natural estrogens 17β-estradiol (E2) and estrone (E1), and the xeno-estrogens 4-octylphenol (OP), 4-nonylphenol (NP), and Bisphenol A (BPA) were also analyzed using the in vitro bioassay. The estrogenic activity of these chemicals were E2 N E1 N NP N OP N BPA.

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“…18,36,37 However, some other POPs with comparable log K ow values, such as DDT, HCB, and coplanar PCBs, exhibited opposite trophodynamics in the same marine food web of the Bohai Sea, with their trophic magnification factor (TMF) values being all higher than 1. 37,38 log K ow of the chemicals is not the only key factor governing the bioaccumulation potential. Their metabolic transformation rates, half-lives in organisms, and assimilation efficiencies may vary significantly and should also be taken into account.…”

Section: Environmental Science and Technologymentioning

confidence: 99%

Tris(2,3-dibromopropyl) Isocyanurate, Hexabromocyclododecanes, and Polybrominated Diphenyl Ethers in Mollusks from Chinese Bohai Sea

Zhu

Liu

Wang

et al. 2012

Environ. Sci. Technol.

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A novel brominated flame retardant (BFR), tris(2,3-dibromopropyl) isocyanurate (TBC), as well as hexabromocyclododecanes (HBCDs) and polybrominated diphenyl ethers (PBDEs), were analyzed in 11 species of mollusks collected from nine coastal cities around the Chinese Bohai Sea in 2009 and 2010. The detection frequencies were 100%, 99%, and 77% for PBDEs, HBCDs, and TBC, respectively. Concentrations of ∑HBCDs ranged from below detection limit (nd) to 28.8 ng g −1 on a dry weight (dw) basis, followed by ∑ 12 PBDE (0.01−20.4 ng g −1 dw) and TBC (nd−12.1 ng g −1 dw). Statistically significant linear correlations were found among the three BFRs. Positive correlations were found between BFRs concentrations and lipid content in mollusks. The concentrations tend to decrease with increasing trophic levels of the mollusks, implying trophic dilution rather than biomagnifications of the BFRs in the aquatic food chains of the sampling area. Among the 11 mollusks species, Mytilus edulis showed higher bioaccumulation capability than others and was therefore considered to be an appropriate bioindicator of contamination by the BFRs in the Chinese Bohai Sea, in agreement with its previous selection for the biomonitoring of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). A dramatic decrease in PBDE concentrations in mollusks of the area was found for the time period from 2003 to 2010, with a half-life of only 2.3 ± 1.7 years, reflecting a rapid response of mollusks to the change in pollution of the marine environment.

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Characterization of Trophic Transfer for Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, Non- and Mono-ortho Polychlorinated Biphenyls in the Marine Food Web of Bohai Bay, North China

Cited by 93 publications

References 40 publications

Short Chain Chlorinated Paraffins in Mollusks from Coastal Waters in the Chinese Bohai Sea

Short Chain Chlorinated Paraffins in Mollusks from Coastal Waters in the Chinese Bohai Sea

Measurement of estrogenic activity in sediments from Haihe and Dagu River, China

Tris(2,3-dibromopropyl) Isocyanurate, Hexabromocyclododecanes, and Polybrominated Diphenyl Ethers in Mollusks from Chinese Bohai Sea

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