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Type: Artigo de periódico
Title: Comparing Trace Elements In Nerium Oleander Leaves During Monitoring Of The Environmental Pollution In The Cities Of Campinas And Rio De Janeiro Using X-ray Fluorescence With Synchrotron Radiation [comparação Dos Teores De Elementos-traço Em Folhas De Nerium Oleander No Monitoramento Da Poluição Ambiental Nas Cidades De Campinas E Rio De Janeiro Por Fluorescência De Raios X Com Radiação Síncrotron]
Author: Simabuco S.M.
Ferreiro Pinto J.
Abstract: X-Ray fluorescence with synchrotron radiation was used to monitor trace elements as bio-indicators Nerium Oleander leaves collected at sites with different vehicle flows in Rio de Janeiro and Campinas, and in rural areas in Brazil were analyzed. One leaf group was washed using a detergent solution (0.1 vol %) and washed again with de-ionized water. The other group was not washed. Both were dried at 60°C to stable weight, ground, and digested with nitric acid. The extract was pre-concentrated with APDC, ammonia pyrrolidine dithiocarbamate, and the samples filtered using an air pump in a cellulose membrane filter. Synchrotron radiation was applied, indicating that metals such as Ti, V, Fe, and Zn were present in higher concentrations in samples from sites with high vehicle flow, even in washed samples. Mn, Co, Cu, and Ni content did not present significant differences among samples and Pb content did not present significant variations because in Brazil lead is no longer a gasoline additive. Nerium Oleander leaves absorb metals in the air and indicate environmental pollution.
Rights: fechado
Identifier DOI: 
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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