Prospec????o de plantas fitorremediadoras em solos contaminados por metais pesados

Autor: Silva, Jos?? Fel??cio da
Přispěvatelé: Santana, Genilson Pereira
Jazyk: portugalština
Rok vydání: 2012
Předmět:
Zdroj: Biblioteca Digital de Teses e Dissertações da UFAM
Universidade Federal do Amazonas (UFAM)
instacron:UFAM
Popis: Made available in DSpace on 2015-04-20T12:31:17Z (GMT). No. of bitstreams: 1 jose felicio.pdf: 2154157 bytes, checksum: 92f1a3fbff21731380d6fdf59ce09e91 (MD5) Previous issue date: 2012-11-30 Phytoremediation uses plants for remediating soils and aquatic system contaminated by inorganic and organic substances. Their results are satisfactory and demonstrate that certain plant species having high genetic potential for removing, degrading, metabolizing or immobilizing a lot of contaminants, such as heavy metal, petroleum, domestic and industrial sewage, etc. Despite promising the phytoremediation has been find problems in discover new plants with the ability for remediating contaminated environments. This study purpose a survey prospective for identifying plants into Manaus Industrial Pole (MIP) region that can accumulate high contents of heavy metals. The following species: Vismia guianensis (Aubl.) Choise, Diplasia karataefolia, Vismia japurensis Annona, Alibertia edulis A. Rich, Poaceae (Capim coloni??o), Lantana camara L., Araceae and Diffenbachia picta Schott were collected in three forest patches near streams of the MIP. The choiced plants were supported on the remarkable contamination that the streams have been submitted. Soil samples of forest patch were also collected and their physical and chemical proprieties determined by EMBRAPA methodologies. The Plants leaves were separated, digested by concentrated HNO3 at 60 oC, and the contents of Cu, Fe, Zn, Cd, Mn, Pb, Co and Ni determined by flame atomic absorption spectrometry. Findings show that all studied plants are capables of uptake high contents of heavy metals. As a result we can affirm that Vismia guianensis (Aubl.) Choise, Diplasia karataefolia, Vismia japurensis Annona, Alibertia edulis A. Rich, Poaceae (Capim coloni??o), Lantana camara L., Araceae and Diffenbachia picta Schott are potentially phytoremediators. A Fitorremedia????o utiliza plantas para remediar solos e sistemas aqu??ticos contaminados por subst??ncias org??nicas e inorg??nicas. Seus resultados s??o satisfat??rios e demonstram que certas esp??cies de plantas com alto potencial gen??tico podem remover, degradar, metabolizar ou imobilizar uma s??rie de contaminantes, como metais pesados, petr??leo, esgoto dom??stico e industrial, etc. Apesar de promissora a fitorremedia????o tem encontrado problemas em descobrir novas plantas com capacidade para remedia????o de ambientes contaminados. O prop??sito deste estudo prospectivo ?? a identifica????o de plantas na regi??o do P??lo Industrial de Manaus (PIM), que possam acumular altos teores de metais pesados. As seguintes esp??cies: Vismia guianensis (Aubl.) Choise, Diplasia karataefolia, Vismia japurensis, Annona, Alibertia edulis A. Rich, Poaceae (Capim coloni??o), Lantana camara L., Araceae e Diffenbachia picta Schott, foram coletadas em tr??s fragmentos florestais, nas margens de igarap??s do PIM. As plantas escolhidas foram submetidas a elevados n??veis de contamina????o provenientes da polui????o dos igarap??s. Amostras de solo dos fragmentos florestais foram coletadas e suas propriedades f??sicas e qu??micas determinadas por metodologias da EMBRAPA. As folhas de plantas foram separadas, digeridas com HNO3 concentrado a 60 ?? C, e o conte??do de Zn, Fe, Mn, Cu, Co, Cd, Pb e Ni, determinado por espectrometria de absor????o at??mica. Os resultados mostram que todas as plantas estudadas s??o capazes absorverem n??veis elevados de metais pesados em suas folhas. Como resultado, podemos afirmar que Vismia guianensis (Aubl.) Choise, Diplasia karataefolia, Vismia japurensis, Annona, Alibertia edulis A. Rich, Poaceae (Capim coloni??o), Lantana camara L., Araceae e Diffenbachia picta Schott s??o potencialmente fitorremediadoras.
Databáze: OpenAIRE
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