Spatial and temporal trends of short- and medium-chain chlorinated paraffins in sediments off the urbanized coastal zones in China and Japan: A comparison study

Zeng, Lixi; Lam, James C.W.; Horii, Yuichi; Li, Xin; Chen, Weifang; Qiu, Jian‐Wen; Leung, Kenneth M.Y.; Yamazaki, Eriko; Yamashita, Nobuyoshi; Lam, Paul K.S.

doi:10.1016/j.envpol.2017.02.015

Cited by 63 publications

(56 citation statements)

References 54 publications

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“…The congener group patterns in the industrial category (Fig. 4a) highly resembled that in PRD and Shenzhen coastal sediments (Zeng et al, 2017). Chen et al (2011) elaborated the compositional profiles in different areas of PRD.…”

Section: Ratios Of Mccps/sccps and Compositional Profilesmentioning

confidence: 70%

“…River in Spain (SCCPs: 250e3040 ng g À1 dw), and the Pearl River Delta in south China (SCCPs: 320e6600 ng g À1 dw; MCCPs: 880e38000 ng g À1 dw), and those from aquatic Ecosystem receiving effluents from a Sewage Treatment Plant in Beijing of China (1100e8700 ng g À1 dw), CP levels in Laizhou Bay area are relatively lower (Castells et al, 2008;Castells et al, 2004;Chen et al, 2011;Zeng et al, 2011b). SCCPs in marine sediments of Laizhou Bay area are slightly lower than those found in Bohai and Yellow seas (14.5e85.2 ng g À1 dw), Liaodong Bay (65e541 ng g À1 dw), Liaohe River Basin (39.8e480.3 ng g À1 dw), East China Sea (5.8e64.8 ng g À1 dw), and Hongkong marine coast (<LOD -75.9 ng g À1 dw) (Gao et al, 2012;Ma et al, 2014b;Zeng et al, 2013;Zeng et al, 2017;Zeng et al, 2012). This slight difference on the same order of magnitude does not rule out the cause by the drawbacks of GC/ECNI-LRMS used in CP detection.…”

Section: Concentration Levels Of Sccps and Mccpsmentioning

confidence: 70%

“…C10 and C11 homologue were the most predominant carbon chain group, accounting for 33.2 ± 8.5% and 31.3 ± 2.1% to SSCCPs respectively, followed by C12 at 18.9 ± 3.0%, and C13 homologue at 17.5 ± 4.6%. Contributions from C10 homologue were remarkably lower compared to Bohai Sea, Yellow Sea, East China Sea and Hongkong coastal zones (Zeng et al, 2013;Zeng et al, 2017;Zeng et al, 2012). But it was similar with Liaodong Bay and Tokyo Bay (Ma et al, 2014b;Zeng et al, 2017).…”

Section: Ratios Of Mccps/sccps and Compositional Profilesmentioning

confidence: 83%

“…Contributions from C10 homologue were remarkably lower compared to Bohai Sea, Yellow Sea, East China Sea and Hongkong coastal zones (Zeng et al, 2013;Zeng et al, 2017;Zeng et al, 2012). But it was similar with Liaodong Bay and Tokyo Bay (Ma et al, 2014b;Zeng et al, 2017). Based on the chlorine groups, Cl6 -C17 were the predominant congener groups, accounting for 34.0 ± 4.5% and 34.9 ± 3.5% to SSCCPs respectively, followed by Cl8 group at 16.0 ± 3.5%, and they cumulatively accounted for 69.5 ± 4.1%.…”

Section: Ratios Of Mccps/sccps and Compositional Profilesmentioning

confidence: 94%

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Short- and medium-chain chlorinated paraffins in sediments from the Laizhou Bay area, North China: Implications for transportation from rivers to marine environment

Pan

Tang

Tian

et al. 2018

Environmental Pollution

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The concentrations of short-and medium-chain chlorinated paraffins (SCCPs and MCCPs) were measured for riverine and marine sediments from the Laizhou Bay area in order to investigate their spatial distributions, possible sources and transport behaviors. Concentrations of SCCPs and MCCPs in riverine sediments varied from 8.4 to 2000 ng g À1 dw and from 1.8 to 3200 ng g À1 dw, respectively. Higher concentrations were found exclusively at industrial sites. Emissions from local factories were the main source of CPs in river sediments of this region. It was 5e22 ng g-1 dw and 6e63 ng g À1 dw with an average value of 11 ng g À1 dw and 9 ng g À1 dw for SCCPs and MCCPs in marine sediments of Laizhou Bay, respectively. In addition to riverine input, ship related emissions are suggested to be another important source of CPs in the Laizhou Bay. MCCPs/SCCPs values and compositional profiles of SCCPs were found to vary along with CP concentrations. A distinct shift to congener groups with shorter carbon chains and lower chlorination from emission sources to remote areas was noticed. The role of log octanol-water partition coefficient (LogK ow ) values indicated decisive in their transportation from emission sources to remote areas in the Laizhou Bay area.

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Section: Ratios Of Mccps/sccps and Compositional Profilesmentioning

confidence: 70%

Section: Concentration Levels Of Sccps and Mccpsmentioning

confidence: 70%

Section: Ratios Of Mccps/sccps and Compositional Profilesmentioning

confidence: 83%

Section: Ratios Of Mccps/sccps and Compositional Profilesmentioning

confidence: 94%

See 2 more Smart Citations

Short- and medium-chain chlorinated paraffins in sediments from the Laizhou Bay area, North China: Implications for transportation from rivers to marine environment

Pan

Tang

Tian

et al. 2018

Environmental Pollution

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“…S7, Table S14). The core from Lake Thun, Switzerland, 99 two of the cores from Sweden (Baltic Sea), 100 and the two cores from China 41,98 all showed increasing MCCP levels, whereas one of the cores from the Baltic Sea 100 and the two cores from Tokyo Bay, Japan 41 showed decreasing or non-discernible time trends. These trends match shows furthermore that MCCPs persist in sediment over decades and degrade only slowly.…”

Section: Mccp Concentrations In Sediment Coresmentioning

confidence: 97%

Environmental Risks of Medium-Chain Chlorinated Paraffins (MCCPs): A Review

Glüge

Schinkel

Hungerbühler

et al. 2018

Environ. Sci. Technol.

190

145

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Chlorinated paraffins are industrial chemicals that can be subdivided into short-chain (SCCP), medium-chain (MCCP), and long-chain (LCCP) chlorinated paraffins. The global production volumes of MCCPs are nowadays suspected to be much higher than those of S- and LCCPs, and the few available studies on the environmental occurrence of chlorinated paraffins report often higher MCCP concentrations than S- or LCCP concentrations in the environment. The present review focuses, therefore, on MCCPs specifically and provides a literature overview and a data analysis of the production volumes, PBT properties (persistence, bioaccumulation potential, and toxicity), and the worldwide measured concentrations of MCCP in environmental samples, biota, and humans. Furthermore, we include our own measurements of technical CP formulations from China, the major global producing country, to estimate the global production amounts of MCCPs. The key findings from this review are that (1) MCCPs are toxic to the aquatic environment, and the available data suggest that they are also persistent; (2) available time trends for MCCPs in soil, biota, and most of the sediment cores show increasing time trends over the last years to decades; and (3) MCCP concentrations in sediment close to local sources exceed toxicity thresholds (i.e., the PNEC). Our study shows that overall, MCCPs are of growing concern, and regulatory actions should be considered seriously.

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Advances in Studies on Toxic Effects of Short-Chain Chlorinated Paraffins (SCCPs) and Characterization of Environmental Pollution in China

Zheng

Sun

Wang

et al. 2020

Arch Environ Contam Toxicol

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Spatial and temporal trends of short- and medium-chain chlorinated paraffins in sediments off the urbanized coastal zones in China and Japan: A comparison study

Cited by 63 publications

References 54 publications

Short- and medium-chain chlorinated paraffins in sediments from the Laizhou Bay area, North China: Implications for transportation from rivers to marine environment

Short- and medium-chain chlorinated paraffins in sediments from the Laizhou Bay area, North China: Implications for transportation from rivers to marine environment

Environmental Risks of Medium-Chain Chlorinated Paraffins (MCCPs): A Review

Advances in Studies on Toxic Effects of Short-Chain Chlorinated Paraffins (SCCPs) and Characterization of Environmental Pollution in China

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