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Elemental characterization of edible plants and soils in an abandoned mining region: assessment of environmental risk
Author(s) -
GonzalezFernandez O.,
Batista M. J.,
Abreu M. M.,
Queralt I.,
Carvalho M. L.
Publication year - 2011
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1348
Subject(s) - soil water , environmental chemistry , leaching (pedology) , inductively coupled plasma , ammonium acetate , sulfate , soil test , chemistry , ammonium , elemental analysis , x ray fluorescence , ammonium sulfate , mineralogy , environmental science , fluorescence , soil science , inorganic chemistry , plasma , physics , high performance liquid chromatography , organic chemistry , chromatography , quantum mechanics
The chemical concentrations of 11 elements in 6 species of edible plants grown in 7 soils, developed in different gossanous materials of the abandoned mine area of Sao Domingos, in southern Portugal, was measured by energy dispersive X‐ray fluorescence. The total fraction of elements in the soils from which the plants were sampled, was measured, using wavelength dispersive X‐ray fluorescence. The elemental content in bioavailable fraction was obtained by using three different leaching tests: DIN 38414‐S4, 1 M ammonium acetate and 0.005 M DTPA. Leachates were analyzed by Induced Coupled Plasma—Optical Emission Spectrometer (ICP‐OES) and Induced Coupled Plasma—Mass Spectrometer (ICP‐MS). The mineralogy of the same soils was evaluated by X‐ray diffraction to identify the species present. The results show that levels in plants can be hazardous especially for Pb and As. Important concentrations of Fe and K were also observed. A different uptake was observed in the several plants for the different elements. The highest assimilation of metals was observed in sampling points containing soluble sulfate salts. Copyright © 2011 John Wiley & Sons, Ltd.