Your browser doesn't support javascript.
loading
Use of passive samplers to detect organochlorine pesticides in air and water at wetland mountain region sites (S-SE Brazil).
Meire, Rodrigo Ornellas; Khairy, Mohammed; Targino, Admir Créso; Galvão, Petrus Magnus Amaral; Torres, Joåo Paulo Machado; Malm, Olaf; Lohmann, Rainer.
Afiliação
  • Meire RO; Biophysics Institute, Rio de Janeiro Federal University, CCS, 21941-902, Rio de Janeiro, RJ, Brazil. Electronic address: rodrigo@xerem.ufrj.br.
  • Khairy M; University of Rhode Island, Graduate School of Oceanography, South Ferry Rd., Narragansett, RI, 02882, USA; Department of Environmental Sciences, Faculty of Science, Alexandria University, Alexandria, Egypt.
  • Targino AC; Graduate Programme in Environmental Engineering, Federal University of Technology, Av. dos Pioneiros, 3131, 86036-370, Londrina, Brazil.
  • Galvão PM; Biophysics Institute, Rio de Janeiro Federal University, CCS, 21941-902, Rio de Janeiro, RJ, Brazil.
  • Torres JP; Biophysics Institute, Rio de Janeiro Federal University, CCS, 21941-902, Rio de Janeiro, RJ, Brazil.
  • Malm O; Biophysics Institute, Rio de Janeiro Federal University, CCS, 21941-902, Rio de Janeiro, RJ, Brazil.
  • Lohmann R; University of Rhode Island, Graduate School of Oceanography, South Ferry Rd., Narragansett, RI, 02882, USA.
Chemosphere ; 144: 2175-82, 2016 Feb.
Article em En | MEDLINE | ID: mdl-26595311
Low-density polyethylene (LDPE) passive samplers were deployed in upland surface waters and the overlying atmosphere during May and June 2012, to determine the transport and trends of freely dissolved and gaseous organochlorine pesticides (OCPs) along altitudinal gradients in mountain regions in south and southeast Brazil. Gaseous OCP concentrations were dominated by hexachlorobenzene (3.0-29 pg m(-3)) and endosulfans (Æ© = α-endosulfan + ß-endosulfan + endosulfan sulphate, 170-260 pg m(-3)), whereas freely dissolved endosulfans were significantly higher than all other OCPs (p < 0.001). The presence of some target pesticides at the highest elevation sites indicated their efficient high-altitude transport from regional sources. Air-water exchange gradients indicated net deposition of most volatile and recently banned OCPs (e.g., HCB, endosulfan) over Brazilian mountains. Moreover, the exposure of these sites to large-scale continental airflows with varying source contributions may partly explain the atmospheric deposition of selected OCPs over upland freshwaters at tropical and subtropical mountains sites in Brazil. These findings, coupled with LDPE passive air and water sampling measurements, point out the potential inputs from distant sources of semi-volatile chemicals to the two high-altitude sites.
Assuntos
Palavras-chave
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Praguicidas / Poluentes Químicos da Água / Monitoramento Ambiental / Poluentes Atmosféricos / Hidrocarbonetos Clorados País/Região como assunto: America do sul / Brasil Idioma: En Revista: Chemosphere Ano de publicação: 2016 Tipo de documento: Article País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Praguicidas / Poluentes Químicos da Água / Monitoramento Ambiental / Poluentes Atmosféricos / Hidrocarbonetos Clorados País/Região como assunto: America do sul / Brasil Idioma: En Revista: Chemosphere Ano de publicação: 2016 Tipo de documento: Article País de publicação: Reino Unido