Organophosphorus esters (OPEs) in PM2.5 in urban and e-waste recycling regions in southern China: concentrations, sources, and emissions.
Environ Res
; 167: 437-444, 2018 11.
Article
em En
| MEDLINE
| ID: mdl-30125762
ABSTRACT
Organophosphate esters (OPEs) are novel ubiquitous contaminants that are attracting growing concern, but their emissions into the environment are still poorly understood. In this study, 12 OPEs were measured in fine particulate matter (PM2.5) at 20 industrial sites in an urban region and four e-waste recycling facilities in a rural region in southern China. There was no significant difference in the concentrations of ∑OPEs between the urban region (519-62,747â¯pg/m3, median = 2854â¯pg/m3) and the rural e-waste region (775-13,823â¯pg/m3, 3321â¯pg/m3). High OPE concentrations in urban PM2.5 were generally associated with the electrical, electronic, plastic, and chemical industries. There were no significant correlations between most OPEs in these two regions, suggesting different emission mechanisms. The average emissions of ∑OPEs estimated using a simplified dispersion model were 73.0â¯kg/yr from the urban industrial point sources and 33.2â¯kg/yr from the e-waste recycling facilities. The estimated emission inventory from industrial activities in the whole city (3228-4452â¯kg/yr) was approximately 30-fold higher than that from the e-waste recycling (133â¯kg/yr) facilities because urban region has a much larger industrial scale. To the best of our knowledge, this is the first effort to model the emissions of OPEs from industrial and e-waste recycling activities to the atmosphere.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Monitoramento Ambiental
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Ésteres
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Material Particulado
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Reciclagem
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Resíduo Eletrônico
País/Região como assunto:
Asia
Idioma:
En
Revista:
Environ Res
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
China