Severe dioxin-like compound (DLC) contamination in e-waste recycling areas: An under-recognized threat to local health

Dai, Qingyuan; Xu, Xijin; Eskenazi, Brenda; Asante, Kwadwo Ansong; Chen, Aimin; Fobil, Julius N.; Bergman, Åke; Brennan, Lesley; Sly, Peter D.; Nnorom, Innocent C.; Pascale, Antonio; Wang, Qihua; Zeng, Eddy Y.; Zeng, Zhijun; Landrigan, Philip J.; Drisse, Marie-Noël Bruné; Huo, Xia

doi:10.1016/j.envint.2020.105731

Cited by 64 publications

(20 citation statements)

References 301 publications

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“…In recent decades the emphasis on sustainability of resources has led to the rise of another sourcerecycling processes. These often involve the recycling of flame retarded materials and goods such as plastics, end of life motorised vehicles, electrical and electronic goods, (Ma et al, 2009;Takahashi et al, 2017;Dai et al, 2020), leading to high levels of PBDD/F contamination of workspaces and the surrounding environment. There are reports of floor dust and the surrounding soil from electronic waste recycling facilities containing total PBDD/F concentrations of up to 143 µg/kg dry weight (dw) in floor dust and 800 µg/kg dw in surrounding soil, amongst other similar contaminants such as PBDEs, PCBs and PCDD/Fs.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Polybrominated dibenzo-p-dioxins and furans (PBDD/Fs): Contamination in food, humans and dietary exposure

Fernandes

Falandysz

2021

Science of The Total Environment

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Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Polybrominated dibenzo-p-dioxins and furans (PBDD/Fs): Contamination in food, humans and dietary exposure

Fernandes

Falandysz

2021

Science of The Total Environment

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“…This opposing trend is a result of the dominance of PCB 169 (which has a TEF that is 1000 times higher than that of any of the other target PCBs in the present study) in samples from the transmission stations. The high TEF value correspondingly translates to high TEQ concentrations observed for PCB 169 and highest mean TEQ concentrations observed for samples from the transmission stations where PCB 169 was dominant (Dai et al, 2020; Trinh & Chang,2018; WHO, 2016). To investigate if the concentrations of dl‐PCBs in samples from the three categories of power stations differ significantly, a Kruskal‐Wallis test was conducted.…”

Section: Resultsmentioning

confidence: 99%

“…Global concern exists over the hazardous effects to human health and the environment from persistent organic pollutants (POPs); POPs are largely synthetic organic chemicals, many of which have been intentionally produced and used in a variety of applications (Dai et al, 2020; United Nations Environmental Programme, 2017). They persist in the environment for long periods and are capable of long‐range transport, leading to global pollution.…”

Section: Introductionmentioning

confidence: 99%

Concentrations and Toxic Implications of Dioxin‐Like Polychlorinated Biphenyls in Soil Samples from Electrical Power Stations in Lagos, Nigeria

Folarin

Abdallah

Oluseyi

et al. 2022

Enviro Toxic and Chemistry

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Dioxin‐like polychlorinated biphenyls (dl‐PCBs) are ubiquitous chemicals which mediate toxicity in a way similar to polychlorinated dibenzo‐p‐dioxins and polychlorinated dibenzofurans. In silico modeling was used to predict the absorption, distribution, metabolism, excretion, and toxicity (ADMET) properties of eight dioxin‐like PCBs in soil samples of 12 power stations in Lagos, Nigeria. Concentrations of Σdl‐PCB8 in soil samples ranged from 490 to 61,000 pg g−1, with mean concentrations of 17,000 pg g−1. The corresponding toxic equivalent (TEQ) concentrations of Ʃdl‐PCB8 ranged from 0.01 to 450 pg TEQ g−1, with a mean value of 42 pg TEQ g−1. Mean TEQ concentrations for Ʃdl‐PCB8 in soil samples from all but one of the sites exceeded the Canadian guideline value of 4 pg TEQ g−1 and the US and German guideline values of 5–10 pg TEQ g−1. However, the TEQ concentrations obtained were all below the US action level of 1000 pg TEQ g−1. The ADMET predictions revealed that all studied dl‐PCBs are inhibitors of three major isoforms (1A2, 2C9, and 2C19) of cytochrome P450 enzyme. Acute oral toxicity (median lethal dose) predictions revealed that all target dl‐PCBs were class III compounds. Hepatotoxicity and carcinogenicity were positive, signifying that the studied compounds all have a tendency to elicit these effects. Occupational daily TEQ exposure via soil ingestion was estimated for an average adult worker weighing 70 kg. The maximum exposure obtained was 0.14 pg TEQ kg−1 body weight day−1, which is half of the European Food Safety Authority (EFSA) tolerable daily intake (TDI) for dioxin‐like compounds. This raises concern over the possible exceedance of the EFSA TDI for these workers if other dietary and nondietary exposure pathways and dioxin‐like compounds are considered. Environ Toxicol Chem 2022;41:800–809. © 2021 SETAC

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“…Considering the possible health impact of electric and electronic waste disposals [8,[27][28][29], we point out that no explicit information regarding the presence of this type of waste is available in our dataset. Despite this, in view of the illegal and uncontrolled management of waste in the study area, the presence of e-waste, that was not considered, could not be ruled out.…”

Section: Limits Of the Adopted Methodsmentioning

confidence: 99%

A Geographic Information System-Based Indicator of Waste Risk to Investigate the Health Impact of Landfills and Uncontrolled Dumping Sites

Fazzo

Santis

Beccaloni

et al. 2020

IJERPH

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Uncontrolled and poor waste management practices are widespread. The global health impact of hazardous waste exposure is controversial, but the excess of some diseases appears to be consistent. The Geographic Information System (GIS, ESRI Inc., Rome, Italy) method used to estimate the waste risk exposure, in an area with many illegal waste dumps and burning sites, is described. A GIS geodatabase (ESRI ArcGIS format) of waste sites’ data was built. A municipal GIS-based indicator of waste risk (Municipal Risk Index: MRI) has been computed, based on type and quantity of waste, typology of waste disposal, known or potential environmental contamination by waste and population living near waste sites. 2767 waste sites were present in an area 426 km2 large. 38% of the population lived near one or more waste sites (100 m). Illegal/uncontrolled waste dumps, including waste burning areas, constituted about 90% of all sites. The 38 investigated municipalities were categorized into 4 classes of MRI. The GIS approach identified a widespread impact of waste sites and the municipalities likely to be most exposed. The highest score of the MRI included the municipalities with the most illegal hazardous waste dumps and burning sites. The GIS-geodatabase provided information to contrast and to prosecute illegal waste trafficking and mismanagements.

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Severe dioxin-like compound (DLC) contamination in e-waste recycling areas: An under-recognized threat to local health

Cited by 64 publications

References 301 publications

Polybrominated dibenzo-p-dioxins and furans (PBDD/Fs): Contamination in food, humans and dietary exposure

Polybrominated dibenzo-p-dioxins and furans (PBDD/Fs): Contamination in food, humans and dietary exposure

Concentrations and Toxic Implications of Dioxin‐Like Polychlorinated Biphenyls in Soil Samples from Electrical Power Stations in Lagos, Nigeria

A Geographic Information System-Based Indicator of Waste Risk to Investigate the Health Impact of Landfills and Uncontrolled Dumping Sites

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