Concentrations, distribution and sources of polychlorinated dibenzo-p-dioxins and dibenzofurans and dioxin-like polychlorinated biphenyls in coastal sediments from Xiamen, China

Cai, Minggang; Hong, Qingquan; Sun, Jionghui; Sundqvist, Kristina; Wiberg, Karin; Cui, Kai; Wang, Yun; Qiu, Cangrong; Huang, Shanshan

doi:10.1016/j.marchem.2016.05.008

Cited by 21 publications

(5 citation statements)

References 53 publications

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“…4). Most studies focused on the toxicities of 17 2,3,7,8-substituted PCDD/F congeners (Xu et al, 2013;Cai et al, 2016), while few studies have looked at non-2,3,7,8-chlorinated PCDD/Fs due to lack of data of toxicity. Fishman et al (2011) evaluated 136 PCDD/Fs in their study.…”

Section: -Chlorinated Pcdd/fsmentioning

confidence: 99%

Gas-Particle Partitioning of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Biphenyls in Flue Gases from Municipal Solid Waste Incinerators

Han

Liu

et al. 2017

Aerosol Air Qual. Res.

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Gas-particle partitioning of polychlorinated dibenzo-p-dioxins, dibenzofurans (PCDD/Fs), and biphenyls (PCBs) was evaluated in flue gases emitted from two municipal solid waste incinerators. Total PCDD/Fs and dl-PCBs in the flue gas were presented, in decreasing order, within gas phases, particulate phases, and aqueous phases. PCDD/F concentrations in the flue gas ranged from 0.75 to 15 ng m -3 , while in the particulate phase they ranged from 0.14 to 8.1 ng m -3 . Dioxin-like (dl-) PCBs had concentrations of 0.18-28 ng m -3 in the flue gas, and 0.041-1.3 ng m -3 in the particulate phase. PCDD/F and dl-PCB levels were associated with specific size ranges of particles, increasing as particle size decreased. More than 54% (81%) of PCDD/Fs and 49% (79%) of dl-PCBs were associated with fine particles of less than 2.5 (10) µm-diameter. In addition, average levels of PCDD/Fs, PCBs, and dl-PCBs were 0.15 ± 0.11 ng m , respectively. Levels of non-2,3,7,8-chlorinated PCDD/Fs were much higher than 2,3,7,8-chlorinated PCDD/Fs in PCDD/F homologue patterns. This suggests that more attention should be paid to non-2,3,7,8-chlorinated PCDD/Fs in the environment, given their potential to transform to more toxic species.

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Section: -Chlorinated Pcdd/fsmentioning

confidence: 99%

Gas-Particle Partitioning of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Biphenyls in Flue Gases from Municipal Solid Waste Incinerators

Han

Liu

et al. 2017

Aerosol Air Qual. Res.

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“…Some specific sources may be suspected because of the specific compounds emitted by them. The most abundant congener in all species analysed in this investigation except Pacific oysters, OCDD, is a characteristic emission from incineration of sewage sludge and municipal waste and operation of petrol and diesel engines (5), and was frequently detected in air samples (3,21). This congener is also connected with dioxin-contaminated pesticides, past use of chlorophenols and atmospheric deposition (3).…”

Section: Discussionmentioning

confidence: 99%

Polychlorinated dibenzo-p-dioxins, dibenzofurans and dioxin-like polychlorinated biphenyls in bivalve molluscs. Risk to Polish consumers?

Mikołajczyk

Warenik-Bany

Pajurek

2023

Journal of Veterinary Research

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Introduction Concentrations of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (DL-PCBs) were investigated in six species of bivalve mollusc purchased on the Polish retail market. The risk to consumers was calculated as a percentage of the tolerable weekly intake (TWI) (2 pg World Health Organization toxic equivalent (WHO-TEQ) kg−1 body weight (b.w.)). Material and Methods Altogether 32 samples were analysed using an isotope dilution technique with high resolution gas chromatography coupled with high resolution mass spectrometry. Results Low levels of all analysed compounds were found. The range of PCDD/Fs was 0.08–0.37 pg WHO-TEQ g−1 of wet weight (w.w.) and 0.04–0.41 pg WHO-TEQ g−1 w.w. for DL-PCBs. The highest concentrations of all analysed compounds were found in Pacific oysters, at 0.30 pg WHO-TEQ g−1 w.w. for the sum of PCDD/Fs and 0.19 pg WHO-TEQ g−1 for the sum of DL-PCBs. These concentrations were 2–4 times higher than those detected in the other analysed mollusc species. Different species-dependent congener profiles were observed for PCDD/F concentrations, while PCB congener concentration profiles were species independent. The risk to consumers was assessed relating theoretical intakes of PCDD/Fs and DL-PCBs per 25, 50 and 100 g of consumption of molluscs per week to the TWI. Conclusion Taking into account the low consumption of molluscs in Poland and low concentrations of analysed compounds, neither adults nor children are likely to exceed the TWI by ingestion of food in this category.

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“…Considering that the nearshore zone of the Lithuanian sector is under the constant impact of the Nemunas River water inflow, as well as the operation of the Klaip ėda multipurpose port, the relatively higher level of PCDD/Fs in the sediments may be related to the additional input of those substances from the mentioned sources. The lowest levels of the investigated contaminants were observed in the areas of sand accumulation, suggesting that coarse-grained sedimentary matter may have lower sorption capacity to accumulate PCDD/Fs and dl-PCBs [8,25].…”

Section: Concentrations Of Pcdd/fs and Dl-pcbsmentioning

confidence: 95%

“…The total WHO-TEQ values were calculated by multiplying the absolute concentration of each isomer by a toxicity equivalency factor (TEF) proposed by the WHO in 2005 to represent the toxic or biological effects [8]. The TEQ values in the Lithuanian sector of the Gdansk Basin ranged from 0.16 to 9.5 pg•g −1 d.w. for PCDD/Fs and from 0.01 to 1.1 pg•g −1 for dl-PCBs.…”

Section: Toxic Equivalents Of Pcdd/fs and Dl-pcbsmentioning

confidence: 99%

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Accumulation Patterns of Polychlorinated Dibenzo-p-Dioxins, Dibenzofurans and Dioxin-like Polychlorinated Biphenyls in Sediments of the South-Eastern Baltic Sea

Dembska,

Pazikowska-Sapota,

Galer-Tatarowicz

et al. 2024

Water

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The current research paper presents the results of the first regional assessment of sediment contamination by dioxins (polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and dioxin-like polychlorinated biphenyls (dl-PCBs)) in the south-eastern part of the Baltic Sea (Lithuanian and Polish marine areas) during the periods of 2014 and 2019–2020. In total, 143 surface and core sediment samples were taken of existing offshore dredged-soil-disposal sites in the area of the former shipyard in the Port of Gdynia (Poland), as well as in a profile from the nearshore to the deeps of the Gdansk basin, following the natural pattern of sediment migration in the region. The obtained results indicated wide variation in both the total content of the investigated compounds as well as the profiles of congeners, indicating the likely sources of their origin. Based on the obtained concentration characteristic profiles of the congeners, we determined the amount of dioxins and the likely sources of their origin in the Gdansk Basin. The profiles showed elevated contents of octa- and hepta-chlorodibenzodioxins (OCDD and HpCDD) in the sediments, while the fractions of most other toxic congeners were considerably lower. The domination of OCDF in the spectrum of the studied PCDFs suggests the possible contribution of industrial processes. The obtained results have filled the gaps in our knowledge while providing a perfect background for more detailed discussions concerning the accumulation of dioxins in surface sediments from the south-eastern part of the Baltic Sea.

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Concentrations, distribution and sources of polychlorinated dibenzo-p-dioxins and dibenzofurans and dioxin-like polychlorinated biphenyls in coastal sediments from Xiamen, China

Cited by 21 publications

References 53 publications

Gas-Particle Partitioning of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Biphenyls in Flue Gases from Municipal Solid Waste Incinerators

Gas-Particle Partitioning of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Biphenyls in Flue Gases from Municipal Solid Waste Incinerators

Polychlorinated dibenzo-p-dioxins, dibenzofurans and dioxin-like polychlorinated biphenyls in bivalve molluscs. Risk to Polish consumers?

Accumulation Patterns of Polychlorinated Dibenzo-p-Dioxins, Dibenzofurans and Dioxin-like Polychlorinated Biphenyls in Sediments of the South-Eastern Baltic Sea

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