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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:40 |
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Conference: Bucharest University Faculty of Physics 2016 Meeting
Section: Atomic and Molecular Physics. Astrophysics. Applied Nuclear Physics
Title:
Determination of essential elements and trace heavy metals in agricrops by photoneutron activation method
Authors:
Cristiana OPREA (1), Marina V. GUSTOVA (2), Alexandru OPREA (1), Pavel J. SZALANSKI (3), Ruxandra CIOFU(4)
Affiliation:
1) Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR), Dubna 141980, Russian Federation, E-mail: coprea2007@yahoo.co.uk
2) Flerov Laboratory for Nuclear Reactions (FLNP), Joint Institute for Nuclear Research (JINR), Dubna 141980, Russian Federation
3) Faculty of Physics and Applied Informatics, Lodz University, Lodz, Poland
4) University of Agronomical Sciences and Veterinary Medicine Bucharest, Department of Vegetable Growing, Bucharest, Romania
E-mail
coprea2005@yahoo.co.uk
Keywords:
trace heavy metals, essential elements, photon neutron activation method, agricrops
Abstract:
Determination of some inorganic components, mainly heavy metals, in agricultural crops is frequently required in health-related environmental studies, due to high toxicity of trace amounts of such elements for human organism. Local contamination from inorganic pollutants reflecting on the quality of agricultural soils is a serious problem recognized everywhere around the word. The main sources of trace elements to agricrops are their growing media, as soil-water-air ecosystem from which those nutrients are taken up by the root to the foliage.
The main goal of the present research was to determine the extent to which industrial inorganic pollutants are transferred to the crops. This was achieved by using photon neutron activation method followed by high resolution -ray spectrometry and multivariate statistical modeling in order to determine levels, pathways, and fate of toxic and non-toxic bioactive elements in selected agricrops along with the root soil. Some of the experimental trace metal values exceeded the threshold established by Romanian and EU regulations to protect vegetation and explain the estimated significant crop losses. Multivariate modeling by factor analysis and neural network simulation of the elemental concentration data showed always the component loaded with specific elements coming from industrial emissions. For example, the survey showed that in the monitored area bordering a high industrialized urban area there are zones with significantly higher concentrations of Ni and Pb and other trace heavy metals as As, Cr, Cu, Fe, Sb and Zn linked to anthropogenic activities linked to the hard industry and urban traffic.
This kind of studies is very requested regarding the vegetable meant for human dietary.
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