Concentración de pesticidas organoclorados en aire del sur de la cuenca del Plata: un año de muestreo
Polyurethane foam passive air samplers (n=21) were deployed across La Plata River south basin to assess the concentration and distribution of organochlorine pesticides (OCPs) for ≈ 3-5 months periods all over a year. Annual average concentration of OCPs ranged from 326 to 9000 pg.m-3 with predominan...
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| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Español |
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2013
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/60701 https://revistas.unlp.edu.ar/domus/article/view/500/765 |
| Aporte de: |
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I19-R120-10915-60701 |
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dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Español |
| topic |
Ecología Cuenca del Plata muestreadores pasivos de aire Endosulfano Clordano |
| spellingShingle |
Ecología Cuenca del Plata muestreadores pasivos de aire Endosulfano Clordano Astoviza, Malena Julia Cappelletti, Natalia Elsa Bilos, Claudio Colombo, Juan Carlos Concentración de pesticidas organoclorados en aire del sur de la cuenca del Plata: un año de muestreo |
| topic_facet |
Ecología Cuenca del Plata muestreadores pasivos de aire Endosulfano Clordano |
| description |
Polyurethane foam passive air samplers (n=21) were deployed across La Plata River south basin to assess the concentration and distribution of organochlorine pesticides (OCPs) for ≈ 3-5 months periods all over a year. Annual average concentration of OCPs ranged from 326 to 9000 pg.m-3 with predominance of Σendosulfans (Endo). Annual averages of Endo (230-8936 pg.m-3) are higher than reported values for other countries in the Latin American region (Brazil, Bolivia, Chile y Colombia: 114- 898 pg.m-3). Maximum values correspond to the warm period in areas with intense soybean culture: North of Buenos Aires and South of Entre Ríos and Santa Fe (3072-21521 pg.m-3). Concentrations of DDTs (12-235 pg/m3) are an order of magnitude lower than sites where it is now used against malaria (India: 5356 pg.m-3; South of Mexico: 2360 pg.m-3) but DDT/DDE ratio (1.1 - 6.8) >1 suggests a relatively fresh contribution, possibly due to the use of dicofol that presents this compound as impurity. The HCHs showed a high concentration in Zárate (801-8348 pg.m-3) where they predominated (66% of the total) with an α/ γHCHs ratio ≈7 similar to the technical mixture. Meanwhile, concentrations from other sites were one order of magnitude lower (7-199 pg.m-3) and indicated fresh inputs.
In the Metropolitan area, chlordanes prevailed (83-691 pg.m-3) representing 5-45 % of the total, especially in Buenos Aires City where the cis/trans-chlordane relationship >> 1.6 indicates a fresh contribution. In conclusion, OCPs have different spatial distribution: higher concentrations in agricultural areas, diversity in composition and higher values of chlordanes in urban areas. Concentrations and relationship values suggest illegal inputs and/or long-range transport. |
| format |
Articulo Articulo |
| author |
Astoviza, Malena Julia Cappelletti, Natalia Elsa Bilos, Claudio Colombo, Juan Carlos |
| author_facet |
Astoviza, Malena Julia Cappelletti, Natalia Elsa Bilos, Claudio Colombo, Juan Carlos |
| author_sort |
Astoviza, Malena Julia |
| title |
Concentración de pesticidas organoclorados en aire del sur de la cuenca del Plata: un año de muestreo |
| title_short |
Concentración de pesticidas organoclorados en aire del sur de la cuenca del Plata: un año de muestreo |
| title_full |
Concentración de pesticidas organoclorados en aire del sur de la cuenca del Plata: un año de muestreo |
| title_fullStr |
Concentración de pesticidas organoclorados en aire del sur de la cuenca del Plata: un año de muestreo |
| title_full_unstemmed |
Concentración de pesticidas organoclorados en aire del sur de la cuenca del Plata: un año de muestreo |
| title_sort |
concentración de pesticidas organoclorados en aire del sur de la cuenca del plata: un año de muestreo |
| publishDate |
2013 |
| url |
http://sedici.unlp.edu.ar/handle/10915/60701 https://revistas.unlp.edu.ar/domus/article/view/500/765 |
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