Investigation of effects of cadmium, lead, nickel and vanadium contamination on the uptake and transport processes in cucumber plants by TXRF spectrometry

Anita Varga, Rosa Maria Garcinuño Martinez, Gyula Záray, Ferenc Fodor

Research output: Contribution to journalConference article

28 Citations (Scopus)

Abstract

Uptake and transport processes of some essential nutrient elements (K, Ca, Fe, Mn and Zn) in cucumber plants grown in contamination-free or in contaminated (10-5 M Cd, Ni, Pb or V) nutrient solutions containing iron in the chemical form of Fe(III)-citrate, Fe(III)-EDTA or Fe-chloride were studied by total reflection X-ray fluorescence spectrometry (TXRF). The root samples were dissolved using a microwave assisted acidic digestion procedure, while the xylem sap samples were directly analyzed after addition of internal standard. It was established that the accumulation in the roots and the transport rate of the four heavy metals investigated increase in order of V<Ni≪Cd<Pb and V≪Pb<Cd<Ni, respectively. Due to the relatively low accumulation and transport of V in the plant it has the smallest influence on the uptake and transport of the essential elements. Cd hampers the water uptake and thereby the amount of all transported essential elements, and in addition results in higher accumulation of Ca, Fe and Zn in the roots. Pb contamination leads to a drastic reduction of Ca accumulated in the roots and mostly a slight increment in the transport of the essential nutrient elements investigated. Ni contamination hinders the transport of K and Zn, and leads to a higher accumulation of Mn in the roots. The chemical form of iron and hereby the presence of complex forming agents play an important role first of all for the uptake and transport processes of Fe and K.

Original languageEnglish
Pages (from-to)1455-1462
Number of pages8
JournalSpectrochimica acta, Part B: Atomic spectroscopy
Volume54
Issue number10
DOIs
Publication statusPublished - Oct 25 1999
EventProceedings of the 1998 7th Conference on Total Reflection X-Ray Fluorescence Analysis and Related Methods (TXRF'98) - Austin, TX, USA
Duration: Sep 27 1998Oct 3 1998

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ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy

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