DOI: https://doi.org/10.55373/mjchem.v28i1.404

Keywords: Flame Atomic Absorption Spectrophotometry (FAAS), heavy metals, vegetables

Abstract

Vegetables provide the human body with essential bioavailable elements and metals, and a consistent source of these different elements is necessary and highly encouraged for everyday consumption. Heavy metals are of significant concern due to their potential toxicity and accumulation in the food chain. Because of their toxicity, these elements were the focus of this investigation. The purpose of this study was to use flame atomic absorption spectrophotometry (FAAS) to determine the amounts of certain elements and heavy metals in diverse vegetable samples.

  We measured the concentrations of elements such as potassium (K), calcium (Ca), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), lead (Pb), and cadmium (Cd) in samples of the following vegetables: tomatoes, cucumbers, cauliflower, eggplant, okra, green pepper, potatoes, zucchini, carrot, and beetroot. These specimens were collected from regional marketplaces. in Baghdad, Iraq. All vegetables were analyzed by flame atomic absorption spectrophotometry.

  The lowest and highest concentrations of all indicated components were measured in all tested vegetables and analyzed using descriptive statistics. The lowest amounts of the quantifiable elements were found in tomato, cucumber, green pepper, cauliflower, zucchini, and okra (Cr, Cd, Cu, Ni, Pb, and Co, respectively). In contrast, okra, tomato, potato, and cauliflower have the highest quantities of the elements (Ca, Fe, K, and Zn, respectively).

  In the evaluation of heavy metals, certain species of vegetables, such as cauliflower and beetroot, have a greater concentration of Pb and Cd, respectively, than other vegetables. Other element concentrations varied amongst vegetables due to changes in element selectivity and uptake from soil solutions.