Short-chain chlorinated paraffins in marine organisms from the Pearl River Estuary in South China: Residue levels and interspecies differences

Sun, Runxia; Luo, Xiao-Jun; Tang, Bin; Li, Zongrui; Huang, Li-Qian; Wang, Tao; Mai, Bi-Xian

doi:10.1016/j.scitotenv.2016.02.144

Cited by 55 publications

(52 citation statements)

References 39 publications

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“…17,18 Generally, concentrations of SCCPs are higher than the levels in mollusks from the Chinese Pearl River Estuary (120−760 ng/g), Hong Kong water bodies (13.9−54.2 ng/g), and King George Island, Antarctica (40.2−257 ng/g). 12,16,29 MCCPs were found in 77.3% of the samples (≤4342 ng/g) with a mean of 366 ng/g, which was higher than that of mollusks from Hong Kong water bodies (20.9−97.9 ng/g). 12 These comparisons indicate that the level of CP pollution in the Bohai Sea is higher than those of other areas, including other sites in China (e.g., Hong Kong water bodies and the Pearl River Estuary).…”

Section: ■ Results and Discussionmentioning

confidence: 77%

Temporal Trends of Short- and Medium-Chain Chlorinated Paraffins in Mollusks from the Chinese Bohai Sea during 2011–2018

Wang

Gao

et al. 2020

ACS EST Water

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Short-chain chlorinated paraffins (SCCPs) and medium-chain chlorinated paraffins (MCCPs) are among the most complex and commonly used chlorinated pollutants in the environment. Their temporal and spatial trends can be used to evaluate the effectiveness of regulations on their production and usage. In this study, mollusks (n = 308) were collected to study their temporal and spatial trends (as well as congener patterns) in different species collected from the Chinese Bohai Sea during 2011–2018. The total concentrations of SCCPs and MCCPs were 28.2–6026 ng/g of dry weight (dw) (mean of 578 ng/g of dw) and nd–4342 ng/g of dw (mean of 356 ng/g of dw), respectively. No obvious temporal or spatial trends of CPs in mollusks were found. However, the homologue profile variance and temporal trends of SCCPs and MCCPs across sampling years suggested changes in the composition of CP industrial products. Compared to the other species, oysters had the highest concentrations of CPs, implying that their bioaccumulation activity might be higher than those of other species. Upon combination of results of biological accumulative capacity and the correlation of CP concentrations among the different species, Neverita didyma, Meretrix meretrix, and Crassostrea talienwhanensis are more appropriate than other species for indicating the pollution of CPs in the Chinese Bohai Sea.

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Section: ■ Results and Discussionmentioning

confidence: 77%

Temporal Trends of Short- and Medium-Chain Chlorinated Paraffins in Mollusks from the Chinese Bohai Sea during 2011–2018

Wang

Gao

et al. 2020

ACS EST Water

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“…SCCP or MCCP concentrations declined with trophic levels (TMF <1, Figure A,B and Table S2), suggesting a trophic dilution of these compounds in the Orge River. Previous studies reported either biomagnification in freshwater and coastal habitats for some homologue groups , or trophic dilution in other cases . Differences in food web characteristics and species differences in the ability to metabolize these chemicals might be relevant factors explaining such discrepancies …”

Section: Resultsmentioning

confidence: 99%

“…Previous studies reported either biomagnification in freshwater and coastal habitats for some homologue groups 39,40 or trophic dilution in other cases. 41 Differences in food web characteristics and species differences in the ability to metabolize these chemicals might be relevant factors explaining such discrepancies. 3 Trophic Transfer of PAH and Phthalates.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Trophic Transfer of Micropollutants and Their Metabolites in an Urban Riverine Food Web

Goutte

Alliot

Budzinski

et al. 2020

Environ. Sci. Technol.

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Trophic magnification factors (TMFs, i.e. the average change in the log-concentration of a pollutant per trophic level) have been extensively assessed for the so-called persistent organic pollutants, especially organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs), which are biomagnified along the food web. In contrast, trophic dilution was documented for pollutants with a high metabolic transformation rate, such as phthalate plasticizers and PAHs (Polycyclic Aromatic Hydrocarbons). However, the fate of their metabolites across the food web has been rarely investigated. In this comparative study, the trophodynamics of 104 micropollutants and 25 of their metabolites were investigated in a freshwater food web from the urban Orge River, France. Trophic levels were determined using stable isotopes. Pyrethroid pesticides and their metabolites were not detected. As predicted, PCBs and OCPs biomagnified (TMF > 1), while all chlorinated paraffins (CPs), PAHs and phthalates underwent a trophic dilution (TMF < 1). TMFs significantly decreased with metabolic transformation rate and increased with hydrophobicity. The levels of PAH or phthalate metabolites were not significantly correlated to trophic levels or underwent a trophic dilution. This study highlighted that the relative contribution of metabolite levels in TMF values calculated for both parent compound and its metabolite(s) is weak compared to TMF values of the parent compound only in a riverine food web.

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“…C12−C13 and Cl8−C10) were more prevalent in soil samples collected near urban or industrial areas. Similar patterns were observed in fish and macroinvertebrates collected from the Pearl River estuary in China, subjected to fast industrialization and urbanization as well as e-waste recycling activities (Sun et al, 2016). Wood processing might a significant source of SCCPs (de Boer, 2010) and several sawmill and wood panel factories are located within the watershed of the Combeauté river.…”

Section: Cp Homologue and Chain Length Group Patternsmentioning

confidence: 54%

Evidence for the widespread occurrence of short- and medium-chain chlorinated paraffins in fish collected from the Rhône River basin (France)

et al. 2019

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Chlorinated paraffins (CPs) are high-volume chemicals used in numerous industrial applications. Their quantitative analysis is extremely challenging and this work presents the optimization of an analytical method based on gas chromatography hyphenated with electron capture negative ionization timeof-flight high-resolution mass spectrometry (GC-ECNI-TOF HRMS) for the simultaneous determination of short-chain and medium-chain CPs (SCCPs and MCCPs, respectively) in fish tissues (i.e. dorsal muscle). The resolution of the TOF-MS analyzer reduced or eliminated isobaric interferences and the CP response was optimized through Design of Experiment. A simple clean-up 2 procedure based on adsorption chromatography further removed some potentially interfering organochlorines. Good selectivity, linearity and accuracy were achieved; method detection limits or limits of reporting were compatible with expected levels in wild fish (0.03-0.35 ng g-1 wet weight, ww, depending on the congener). This method was proven suitable for the analysis of CPs in tissues of common barbel Barbus barbus, a fish species frequently used for water quality monitoring purposes in Europe. SCCPs and MCCPs were found to be widespread within the Rhône river basin (France). At all locations, MCCP concentrations (1.3-72.7 ng g-1 ww) were higher than those of SCCPs (0.3-10.6 ng g-1 ww) and levels were systematically lower than the proposed Predicted No Effect Concentrations (PNECs). Spatial variations of SCCP composition profiles largely surpassed those of MCCPs, suggesting the influence of local sources.

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Short-chain chlorinated paraffins in marine organisms from the Pearl River Estuary in South China: Residue levels and interspecies differences

Cited by 55 publications

References 39 publications

Temporal Trends of Short- and Medium-Chain Chlorinated Paraffins in Mollusks from the Chinese Bohai Sea during 2011–2018

Temporal Trends of Short- and Medium-Chain Chlorinated Paraffins in Mollusks from the Chinese Bohai Sea during 2011–2018

Trophic Transfer of Micropollutants and Their Metabolites in an Urban Riverine Food Web

Evidence for the widespread occurrence of short- and medium-chain chlorinated paraffins in fish collected from the Rhône River basin (France)

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