Determination of YLOID in soil and grapevine systems (Vitis vinifera L.) by ICP-MS technique: a hopeful proxy for the geographical characterization of food products?

Chemical behavior of YLOID (Y and Lanthanoid) into soil was extensively studied both to evaluate geochemical process. Metal cations can be immobilized onto particle surface of soil due to the formation of stable complexes with organic matter. If environmental conditions change metals can be mobilized and therefore to became bioavailable [1]. In recent years identification of the geographical origin of food has acquired very importance because consumers are more and more interested in knowing the provenance of the food purchased and/or eaten [2]. Then the knowledge of a relationship between the chemistry of the substrates and the food could be an important tool for the quality guarantee of traditional food products. The uptake of YLOID and their distribution in grapevine system were studied under controlled conditions following the plants growth. The experimental system consisted of a set of 30 plants, divided into two groups: blank and YLOID. The first group (blank) was used as control, the other was polluted in an unique step with a YLOID concentration of 2.5⋅10-3 mmol for Kg of substrate (peat and gravel). Three replicates for each group and for each phenological stage were sampled. To study the metal distribution, the main part of plants: roots, stem, woody and herbaceous shoot and apex were analysed. The obtained results were critically discussed on the basis of the different amount presents in all parts of plants.