Pollution by hexachlorobenzene and pentachlorophenol in the coastal plain of São Paulo state, Brazil

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDo Nascimento, N. R.
dc.creatorNicola, S. M C
dc.creatorRezende, M. O O
dc.creatorOliveira, T. A.
dc.creatorÖberg, G.
dc.date2014-05-27T11:21:07Z
dc.date2016-10-25T18:19:45Z
dc.date2014-05-27T11:21:07Z
dc.date2016-10-25T18:19:45Z
dc.date2004-08-01
dc.date.accessioned2017-04-06T01:09:49Z
dc.date.available2017-04-06T01:09:49Z
dc.identifierGeoderma, v. 121, n. 3-4, p. 221-232, 2004.
dc.identifier0016-7061
dc.identifierhttp://hdl.handle.net/11449/67808
dc.identifierhttp://acervodigital.unesp.br/handle/11449/67808
dc.identifier10.1016/j.geoderma.2003.11.008
dc.identifierWOS:000222744700006
dc.identifier2-s2.0-3042725381
dc.identifierhttp://dx.doi.org/10.1016/j.geoderma.2003.11.008
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/889217
dc.descriptionOrganochlorine compounds were dumped by chemical industries during the 1970s in many areas of the coastal plain of São Paulo state in Brazil. These dumps, located on hillsides and in valleys, in both rural and urban environments, are responsible for soil and water pollution. The objective of this work was to determine how the pollutants have spread in an area occupied by a spodosol-type soil mantle. The study combines soil morphological observations with soil and water analysis of hexachlorobenzene (HCB) and pentachlorophenol (PCP) in soil toposequences. The results indicate that the highest pollutant concentrations are observed near the dump site and that the compounds contamination is increasing. A map integrating topography and chemical concentrations was created to visualize the spatial distribution of HCB levels in the landscape. Physical and chemical analyses were performed to measure HCB and PCP levels in the soil. Soil water appears to act as a vector of HCB, probably through complexation with and dispersal of dissolved organic matter. The persistence of HCB at the studied site is most likely due to the low pH values in combination with a high content of organic matter. HCB was consistently found in higher concentrations than PCP. It is plausible that the cause of this difference is that PCP is degraded more easily under sunlight than HCB and that degradation of PCP under acid conditions leads to the formation of HCB. © 2003 Published by Elsevier B.V.
dc.languageeng
dc.relationGeoderma
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAquifer pollution
dc.subjectHexachlorobenzene
dc.subjectOrganochlorine pesticide
dc.subjectPentachlorophenol
dc.subjectSoil pollution
dc.subjectSpodosol
dc.subjectChlorine
dc.subjectDegradation
dc.subjectMorphology
dc.subjectPhenols
dc.subjectWater analysis
dc.subjectWater pollution
dc.subjectOrganochlorine compounds
dc.subjectSoils
dc.subjectaquifer pollution
dc.subjectcoastal plain
dc.subjecthexachlorobenzene
dc.subjectPCP
dc.subjectsoil pollution
dc.subjectBrazil
dc.subjectSao Paulo [Brazil]
dc.subjectSouth America
dc.titlePollution by hexachlorobenzene and pentachlorophenol in the coastal plain of São Paulo state, Brazil
dc.typeOtro


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