Concentración de pesticidas organoclorados en aire del sur de la cuenca del Plata: un año de muestreo
Polyurethane foam passive air samplers (n=20) were deployed across the Southern del Plata basin to assess concentrations and distributions of Organochlorine Pesticides (OCPs) for ≈ 3-4 months periods all over a year. Annual average concentration of OCPs ranged from 326 to 9000 pg/m3 with predominanc...
Guardado en:
| Autores principales: | , , , |
|---|---|
| Formato: | Objeto de conferencia |
| Lenguaje: | Español |
| Publicado: |
2012
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/26481 http://www.congresos.unlp.edu.ar/index.php/CCMA/7CCMA/paper/viewFile/907/206 |
| Aporte de: |
| id |
I19-R120-10915-26481 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Español |
| topic |
Ecología Aire medio ambiente muestreadores pasivos de aire endosulfanos clordanos Passive air samplers DDT endosulfan chlordane |
| spellingShingle |
Ecología Aire medio ambiente muestreadores pasivos de aire endosulfanos clordanos Passive air samplers DDT endosulfan chlordane Bilos, Claudio Colombo, Juan Carlos Cappelletti, Natalia Elsa Astoviza, Malena Julia Concentración de pesticidas organoclorados en aire del sur de la cuenca del Plata: un año de muestreo |
| topic_facet |
Ecología Aire medio ambiente muestreadores pasivos de aire endosulfanos clordanos Passive air samplers DDT endosulfan chlordane |
| description |
Polyurethane foam passive air samplers (n=20) were deployed across the Southern del Plata basin to assess concentrations and distributions of Organochlorine Pesticides (OCPs) for ≈ 3-4 months periods all over a year. Annual average concentration of OCPs ranged from 326 to 9000 pg/m3 with predominance of endosulfans (Endo). Annual averages of Endo (230-8936 pg/m3) are higher than reported values for other countries from this region (Brazil, Bolivia, Chile y Colombia: 114-898 pg/m3). Maximum values correspond to the warm period in areas of intense soybean culture: North of BsAs and South of E. Ríos and Santa Fe (3072-21521 pg/m3).
Concentrations of DDTs (12-235 pg/m3) are an order of magnitude lower than the sites where it is used against malaria at present (India: 5356pg/m3; South of Mexico: 2360 pg/m3) 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 impurity.
The HCHs showed high concentrations in Zárate (801-8348 pg/m3) where they predominanted (66% of the total) with an α/γHCHs ratio ≈7, similar to the technical mixture suggesting a fresh contribution.
In the metropolitan area chlordanes prevailed (83-691 pg/m3) representing 5-45% of the total, especially in Buenos Aires City, where the cis/trans-chlordane relationship >> 1.6 indicates a fresh contribution It was concluded that the OCPs have different spatial distribution: higher concentrations in agriculrure areas; diversity in composition of pesticides and higher values of clordanes in urban areas. Concentrations and relationship values suggest non-legal inputs or long range transport. |
| format |
Objeto de conferencia Objeto de conferencia |
| author |
Bilos, Claudio Colombo, Juan Carlos Cappelletti, Natalia Elsa Astoviza, Malena Julia |
| author_facet |
Bilos, Claudio Colombo, Juan Carlos Cappelletti, Natalia Elsa Astoviza, Malena Julia |
| author_sort |
Bilos, Claudio |
| 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 |
2012 |
| url |
http://sedici.unlp.edu.ar/handle/10915/26481 http://www.congresos.unlp.edu.ar/index.php/CCMA/7CCMA/paper/viewFile/907/206 |
| work_keys_str_mv |
AT bilosclaudio concentraciondepesticidasorganocloradosenairedelsurdelacuencadelplataunanodemuestreo AT colombojuancarlos concentraciondepesticidasorganocloradosenairedelsurdelacuencadelplataunanodemuestreo AT cappellettinataliaelsa concentraciondepesticidasorganocloradosenairedelsurdelacuencadelplataunanodemuestreo AT astovizamalenajulia concentraciondepesticidasorganocloradosenairedelsurdelacuencadelplataunanodemuestreo AT bilosclaudio organochlorinepesticidesconcentrationinairatsouthofdelplatabasinoneyearsampling AT colombojuancarlos organochlorinepesticidesconcentrationinairatsouthofdelplatabasinoneyearsampling AT cappellettinataliaelsa organochlorinepesticidesconcentrationinairatsouthofdelplatabasinoneyearsampling AT astovizamalenajulia organochlorinepesticidesconcentrationinairatsouthofdelplatabasinoneyearsampling |
| bdutipo_str |
Repositorios |
| _version_ |
1764820467674251266 |