Chromium localization in plant tissues of Lycopersicum esculentum Mill using iICP-MS and ion microscopy (SIMS)

High-resolution imaging secondary ion mass spectrometry (HRI-SIMS) in combination with inductively coupled plasma mass spectrometry (ICP-MS) were utilised to determine specific sites of chromium concentration in tomato plant tissues (roots, stems and leaves). The tissues were obtained from plants gr...

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Bibliographic Details
Published in:	Applied surface science Vol. 252; no. 10; pp. 3488 - 3501
Main Authors:	MANGABEIRA, Pedro Antonio, GAVRILOV, Konstantin L, SCHRAMM MIELKE, Marcelo, LOUSTALOT, Florence Grenier, GALLE, Pierre, FURTADO DE ALMEIDA, Alex-Alan, OLIVEIRA, Amo Heeren, SEVERO, Maria Isabel, RUSA, Tiago Santana, DA COSTA SILVA, Delmira, LABEJOF, Lise, ESCAIG, Francoise, LEVI-SETTI, Riccardo
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier Science 01-03-2006 Elsevier
Subjects:	Analytical chemistry Chemical Sciences Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science; rheology Exact sciences and technology Physics Microanalyses Ion microscopy Transition elements Chromium SIMS Heavy metal Ionic microscopy
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Summary:	High-resolution imaging secondary ion mass spectrometry (HRI-SIMS) in combination with inductively coupled plasma mass spectrometry (ICP-MS) were utilised to determine specific sites of chromium concentration in tomato plant tissues (roots, stems and leaves). The tissues were obtained from plants grown for 2 months in hydroponic conditions with Cr added in a form chromium salt (CrCl3·6H2O) to concentrations of 25 and 50 mg/L. The chemical fixation procedure used permit to localize only insoluble or strongly bound Cr components in tomato plant tissue. In this work no quantitative SIMS analysis was made. HRI-SIMS analysis revealed that the transport of chromium is restricted to the vascular system of roots, stems and leaves. No Cr was detected in epidermis, palisade parenchyma and spongy parenchyma cells of the leaves. The SIMS-300 spectra obtained from the tissues confirm the HRI-SIMS observations. The roots, and especially walls of xylem vessels, were determined as the principal site of chromium accumulation in tomato plants.
ISSN:	0169-4332 1873-5584
DOI:	10.1016/j.apsusc.2005.05.015