Spatial distribution and ecological risks of polychlorinated biphenyls in a river basin affected by traditional and emerging electronic waste recycling in South China

Shi, Jingchun; Huang, Linlin; Sanganyado, Edmond; Mo, Jiezhang; Zhao, Hongzhi; Li, Xiang; Wong, Ming Hung; Liu, Wenhua

doi:10.1016/j.ecoenv.2022.114010

Cited by 4 publications

(2 citation statements)

References 76 publications

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“…The unique characteristics of PCBs, including their chemical stability and low water solubility, result in their accumulation in environmental sinks, such as soils and sediments, where they exhibit long half-lives [12][13][14][15][16][17][18]. PCBs were historically used in various industrial applications, including heat exchangers, dielectric fluids, pesticides, inks, paints, paper, and plastics, contributing to their widespread distribution in the environment [1,3,5,14,19,20].…”

Section: Introductionmentioning

confidence: 99%

Identification of the Contamination Sources by PCBs Using Multivariate Analyses: The Case Study of the Annaba Bay (Algeria) Basin

Khaled-Khodja,

Cheraitia,

Rouibah

et al. 2023

Molecules

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Persistent Organic Pollutants (POPs), particularly the indicator polychlorinated biphenyls (PCBs), were first quantified in water and sediments of two wadis, Boujemaâ and Seybouse, as well as in the effluents from a fertilizer and phytosanitary production industrial plant (Fertial). Since these contaminated discharges end in Annaba Bay (Algeria) in the Mediterranean Sea, with a significant level of contamination, all the potential sources should be identified. In this work, this task is conducted by a multivariate analysis. Liquid–liquid extraction and gas chromatography/mass spectrometry (GC–MS) methods were applied to quantify seven PCB congeners, usually taken as indicators of contamination. The sum of the PCB concentrations in the sediments ranged from 1 to 6.4 μg/kg dw (dry weight) and up to 0.027 μg/L in waters. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were used for the multivariate analysis, indicating that the main sources of PCB emissions in the bay are urban/domestic and agricultural/industrial. The outfalls that mostly contribute to the pollution of the gulf are the Boujemaâ wadi, followed by the Seybouse wadi, and finally by the Fertial cluster and more precisely the annex basin of the plant. Although referring to a specific site of local importance, the work aims to present a procedure and a methodological analysis that can be potentially applicable to further case studies all over the world.

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Section: Introductionmentioning

confidence: 99%

Identification of the Contamination Sources by PCBs Using Multivariate Analyses: The Case Study of the Annaba Bay (Algeria) Basin

Khaled-Khodja,

Cheraitia,

Rouibah

et al. 2023

Molecules

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“…PCBs were found to be above trace levels (≥0.001 μg/g w.w. (wet weight)) in 98% of bird carcasses collected from various sites in Canada (Braune & Noble, 2009). PCBs can enter an environment through long range transport and can be remobilized from sediment into the trophic food web years to decades after deposition (Shi et al, 2022).…”

Section: Thesis Objectives and Hypothesesmentioning

confidence: 99%

Gene expression as a biomonitoring tool? Using a PCR array to determine transcriptomic effects of contaminants in an Arctic seabird species, Black guillemot (Cepphus grylle)

Zahaby

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Increasing economic development in the Arctic leads to higher contaminant burdens in wildlife. Current biomonitoring methods are subpar, due to their inability to quantify complex contaminant mixtures in wild species. This thesis tests the hypothesis that a custom transcriptomic tool can be used to monitor gene expression profiles following exposure from two different contaminant types in "case studies" using Black guillemot livers. Chapter 2 conveyed predictable chemistry profiles with the highest polychlorinated biphenyl (PCB) burdens found at the most contaminated site before remediation. Gene expression results were unreliable due to the age of samples and resulting degraded RNA quality. Chapter 3 showed distinct polycyclic aromatic compound (PAC) and gene expression profiles in birds based on diesel-related contaminants following an oil spill event. Birds collected from the non-spill site showed distinct chemistry and gene expression profiles, indicating exposure to contaminants from unknown sources.

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The role of collaborative research network on E-waste studies in North America using a bibliometric approach

Hasan,

Ng,

Mahmud

et al. 2024

Ecological Informatics

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Spatial distribution and ecological risks of polychlorinated biphenyls in a river basin affected by traditional and emerging electronic waste recycling in South China

Cited by 4 publications

References 76 publications

Identification of the Contamination Sources by PCBs Using Multivariate Analyses: The Case Study of the Annaba Bay (Algeria) Basin

Identification of the Contamination Sources by PCBs Using Multivariate Analyses: The Case Study of the Annaba Bay (Algeria) Basin

Gene expression as a biomonitoring tool? Using a PCR array to determine transcriptomic effects of contaminants in an Arctic seabird species, Black guillemot (Cepphus grylle)

The role of collaborative research network on E-waste studies in North America using a bibliometric approach

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