Multielement analysis of lichen samples using XRF methods. Comparison with ICP‐AES and FAAS

Medientyp: E-Artikel

Titel: Multielement analysis of lichen samples using XRF methods. Comparison with ICP‐AES and FAAS

Beteiligte: Herrero Fernández, Zahily; Estevez Álvarez, Juan Reinaldo; Montero Álvarez, Alfredo; Pupo González, Iván; dos Santos Júnior, José Araújo; Ortueta Milan, Marvic; Mesa Pérez, Guillermo; Leyva Bombuse, Dennys; Rodríguez González, Maydel; Hernández Torres, Débora; Alberro Macias, Nancy; Blanco Hernández, Nelis; Padilla Álvarez, Román

Erschienen: Wiley, 2016

Sprache: Englisch

DOI: 10.1002/xrs.2657

ISSN: 0049-8246; 1097-4539

Schlagwörter: Spectroscopy

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Beschreibung: This research presents the contents of Ca, Fe, Zn, Br, Rb, Sr and Pb in lichen samples used as biomonitors of air pollution collected in Havana. Statistical comparisons were made among the results obtained in three campaigns during three years. Two X‐Ray Fluorescence (XRF) methods were used, employing for excitation an annular 109Cd source and a Mo X‐ray tube with a molybdenum secondary target. In both cases, matrix effects were corrected by the use of normalization for the Compton scattered peak; in this way the determination is more efficient. For quality control of the results, biological Certified Reference Materials were analyzed and were made comparisons between XRF, Inductively Coupled Plasma‐Atomic Emission Spectrometry and Flame Atomic Absorption Spectrophotometry. No significant differences were found between the different techniques. The elemental distribution patterns obtained for each metal were associated with different pollution sources, thus contributing to the assessment of air pollution in Havana. Copyright © 2015 John Wiley & Sons, Ltd.

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