Abstract
The paper presents experimental results obtained in the study of heavy metals transfer from soil to vegetables. The experiments for which the raw and statistically processed data are presented in this paper are preliminary experiments within an extensive research program of plant behaviour in soils contaminated with heavy metals. These experiments underlie the development of primary statistical mathematical models that are also presented in the paper. These experiments will also form the basis for far more consistent experiments that follow plants throughout the life cycle. The statistical mathematical models presented in this paper facilitate extracting important conclusions about how plants accumulate heavy metals as well as about the accumulation rate behaviour during experiments. Both experiments and mathematical models will form the basis of complex experiments and dynamic mathematical models in the next stage of research.
Highlights
Experimental part Materials and methodsThe studied vegetables (carrots, radishes, parsley leaves and root, spinach, cucumbers, tomatoes), fig., were planted in soil contaminated with the following four heavy metal concentrations: 1.5%, 3.0%, 4.5%, 6.0% and the heavy metals used were: copper, lead, zinc
The paper presents experimental results obtained in the study of heavy metals transfer from soil to vegetables
In Romania, the authors of the paper [10] present the research results obtained in 2011 in SIECOLEG project regarding the assessment of some heavy metals of soils and vegetables from some growing systems
Summary
The studied vegetables (carrots, radishes, parsley leaves and root, spinach, cucumbers, tomatoes), fig., were planted in soil contaminated with the following four heavy metal concentrations: 1.5%, 3.0%, 4.5%, 6.0% and the heavy metals used were: copper, lead, zinc. The vegetables under study were planted in a controlled medium, using pots to which contaminated soil was added with four concentrations of Cu, Pb, Zn mixtures. In contrast to the soil contaminated with the four solutions of different concentrations, in parallel as reference samples, seedlings were planted in pots with uncontaminated fertile soil. The exposed statistical models are simple and contain only the interpolation by polynomial functions of the raw experimental data. The interpretation of these models will be provided. These simple models underlie the creation of dynamic elementary models
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