Soil concentrations, compositional profiles, sources and bioavailability of polychlorinated dibenzo dioxins/furans, polychlorinated biphenyls and polycyclic aromatic hydrocarbons in open municipal dumpsites of Chennai city, India
| Autor: | Juan Muñoz-Arnanz, Sancho Rajan, K Ronnie Rex, Begoña Jiménez, Mukesh Pasupuleti, Paromita Chakraborty |
|---|---|
| Přispěvatelé: | Ministry of Environment, Forest and Climate Change (India) |
| Rok vydání: | 2021 |
| Předmět: |
Polychlorinated Dibenzodioxins
Municipal solid waste Bioavailability Soil test TEQs Biological Availability India Dioxins World health Soil PAHs RNA Ribosomal 16S Polycyclic Aromatic Hydrocarbons Furans POPs Waste Management and Disposal Phylogeny Pollutant Dibenzofurans Polychlorinated Contamination Polychlorinated Biphenyls Dioxins furans Environmental chemistry Environmental science Dibenzofurans |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0956-053X |
| Popis: | Several studies have reported the release of halogenated persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs) associated with open burning of municipal solid waste. Considering soil as a sink for such organic contaminants, we conducted an in-depth study on the surface soil concentrations of polychlorinated dibenzo-p-dioxins/furans (PCDD/Fs), polychlorinated biphenyls (PCBs) and sixteen USEPA enlisted PAHs collected from thirteen zones of the two major municipal dumpsites, Kodungaiyur dumpsite (KDS) and Perungudi dumpsite (PDS) of Chennai city. Indigenous microbes from dumpsite soil samples were isolated and identified based on 16S rRNA sequencing and phylogenetic analysis. Using indigenous microbes, we have elucidated the bioavailability of the targeted organic pollutants for each site. Range of ΣPCDD/Fs, ΣPCBs and ∑PAHs varied between 3.96–612 pg/g (96.0 pg/g; median), ND-182 ng/g (6.35 ng/g; median) and 0.62–3649 ng/g (64.3 ng/g; median), respectively. All the dumpsite samples showed bioavailability for POPs and PAHs. Toxicity equivalent values (TEQs) associated with dioxin-like PCBs and PCDD/Fs from the zones where dumped municipal solid wastes were collected from electronic-waste/IT-corridor/port areas and toxic PAHs from the zone receiving wastes from the industrial corridor of the city were higher than the soil permissible limit prescribed by the World Health Organization. This work was supported by the Ministry of Environment and Forestry and Climate Change, Grant No. Q-14011/43/2013- CPW (EHC) awarded to PC. The authors would like to thank Mrs Sindhuja Ravindran and other SRM IST graduate students for their help in sample collect |
| Databáze: | OpenAIRE |
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