review · Environment International
This review examines the severe contamination by dioxin-like compounds (DLCs) resulting from electrical and electronic waste (e-waste) burning and recycling activities. These activities are a primary source of DLC emissions, leading to high exposure for workers and residents near e-waste recycling sites (EWRS). Although DLC concentrations at EWRS have shown a recent decline due to stricter regulations, the contamination levels remain severe. The review highlights that DLC levels in human blood and breast milk at EWRS are higher than those associated with various health impacts in epidemiological studies. Furthermore, the estimated daily intake of DLCs for people in these areas significantly exceeds the World Health Organisation's recommended limits, indicating elevated health risks. The abstract calls for more epidemiological studies and continuous monitoring.
This research highlights a critical public health issue: severe contamination from e-waste recycling. High exposure to dioxin-like compounds poses significant health risks to vulnerable populations, including workers and local residents. Understanding these risks is crucial for developing effective interventions and protective measures.
The abstract does not indicate a direct application pathway, specific users, or a readiness level for commercialisation. It primarily identifies a severe environmental and health problem, calling for further epidemiological studies and continuous monitoring of contamination levels.
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Electrical and electronic waste (e-waste) burning and recycling activities have become one of the main emission sources of dioxin-like compounds (DLCs). Workers involved in e-waste recycling operations and residents living near e-waste recycling sites (EWRS) are exposed to high levels of DLCs. Epidemiological and experimental in vivo studies have reported a range of interconnected responses in multiple systems with DLC exposure. However, due to the compositional complexity of DLCs and difficulties in assessing mixture effects of the complex mixture of e-waste-related contaminants, there are few studies concerning human health outcomes related to DLC exposure at informal EWRS. In this paper, we have reviewed the environmental levels and body burdens of DLCs at EWRS and compared them with the levels reported to be associated with observable adverse effects to assess the health risks of DLC exposure at EWRS. In general, DLC concentrations at EWRS of many countries have been decreasing in recent years due to stricter regulations on e-waste recycling activities, but the contamination status is still severe. Comparison with available data from industrial sites and well-known highly DLC contaminated areas shows that high levels of DLCs derived from crude e-waste recycling processes lead to elevated body burdens. The DLC levels in human blood and breast milk at EWRS are higher than those reported in some epidemiological studies that are related to various health impacts. The estimated total daily intakes of DLCs for people in EWRS far exceed the WHO recommended total daily intake limit. It can be inferred that people living in EWRS with high DLC contamination have higher health risks. Therefore, more well-designed epidemiological studies are urgently needed to focus on the health effects of DLC pollution in EWRS. Continuous monitoring of the temporal trends of DLC levels in EWRS after actions is of highest importance.
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DOI: 10.1016/j.envint.2020.105731
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