Bio-monitoring of trace-element air pollution in Portugal: Qualitative survey

  • M. C. Freitas
  • M. A. Reis
  • L. C. Alves
  • H. Th. Wolterbeek
  • T. Verburg
  • M. A. Gouveia
Environmental Application

Abstract

During the months of July and August 1993 a lichen collection campaign was held in Portugal where about 250 samples were collected and analysed by thick target TIPIXE and INAA. Results for 44 different elements were obtained and a data base was built and subjected to Monte Carlo Aided Target Transform Factor Analysis (MCATTFA), a method developed at IRI (Delft). 10×10 km2 coast and 50×50 km2 far from coast sampling grids were used for collection. In this work we will present the results which were obtained based on a reduced data set of 36 elements measured by INAA. The results for 22 elements obtained by TTPIXE were published elsewhere. In this work we will also present the conclusions considering all the 44 elements determined by both techniques.

Keywords

Physical Chemistry Inorganic Chemistry Data Base INAA Sampling Grid 

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Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • M. C. Freitas
    • 1
  • M. A. Reis
    • 2
  • L. C. Alves
    • 2
  • H. Th. Wolterbeek
    • 3
  • T. Verburg
    • 3
  • M. A. Gouveia
    • 1
  1. 1.Departamento de QuímicaITN-Instituto Tecnológico e NuclearSacavémPortugal
  2. 2.Departamento de FísicaITN-Instituto Tecnológico e NuclearSacavémPortugal
  3. 3.IRI, Department of RadiometryTU DelftDelftThe Netherlands

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