DEGEO - Departamento de Geologia

URI permanente desta comunidadehttp://www.hml.repositorio.ufop.br/handle/123456789/8

Navegar

Filtros

2010 - 20202

Configurações

Autor: search.filters.author.Nalini Júnior, Hermínio AriasAssunto: search.filters.subject.Air quality

Resultados da Pesquisa

Agora exibindo 1 - 2 de 2
  • Nenhuma Miniatura Disponível
    Item
    Mangifera indica L. as airborne metal biomonitor for regions of the state of Espírito Santo (Brazil).
    (2020) Castro, Leonardo Zago de; Silva, Thaís R. B. da; Ronchi, Silas Nascimento; Guimarães, Adriana A. T.; Nalini Júnior, Hermínio Arias; Ribeiro, Juliano Souza; Coutinho, Silvia Cruz Goes; Schmitt, Elisângela Flávia Pimentel; Endringer, Denise Coutinho
    Inorganic pollutants are continuously introduced into the atmosphere. Bioindicators present an alternative method of monitoring air quality. This work proposes to evaluate the Mangifera indica L. leaves as a biomonitor for air quality. Quantification of aluminum (Al), barium (Ba), calcium (Ca), chromium (Cr), copper (Cu), iron (Fe), potassium (K), manganese (Mn), magnesium (Mg), sodium (Na), nickel (Ni), sulfur (S), strontium (Sr), titanium (Ti), and zinc (Zn) were determined in leaves of M. indica using optical emission spectrometer inductively coupled plasma (ICP-OES). The correlogram analyses demonstrated a strong positive correlation between Al and Fe. Contamination of the soil by vehicles and agricultural chemicals, in synergy with the influence of the winds, may be considered as a source of contamination. Enrichment factor (EF) index was used to distinguish between natural and anthropogenic sources. Detection of Mn and Cu could be associated with anthropogenic influence, demonstrating M. indica as a feasible tool to biomonitor air quality.
  • Nenhuma Miniatura Disponível
    Item
    Determinação de metais traço no material particulado em suspensão em Ouro Preto, Minas Gerais.
    (2010) Magalhães, Lucas Carlúcio; Nalini Júnior, Hermínio Arias; Lima, Aniel da Costa; Coutrim, Maurício Xavier
    The determination of the airborne particulate matter (PTS) mass and trace metals concentrations were performed in three sites in Ouro Preto, MG, Brazil. It was evaluated 288 samples. The legal limit of annual geometric average (60 mg m-3) to PTS concentrations didn’t exceed, but the legal limit for 24 h (240 mg m-3) did in three measurements. Seven metals (Al, Cr, Cu, Fe, Mn, Ni, Pb) analysed by ICP-AES were quantified in 18 samples. Aluminum and iron showed the highest concentrations, indicating the contribution of the soil and of one aluminum plant. The high nickel concentration is probably due to vehicular emissions and industrial combustion processes.