Investigation and Development of Polarographic Method for Pb (II) and Cd (II) Analyses in Oils

Abstract

In this study, Differential Pulse Polarography (DPP) method was preferred of Cd (II) and Pb (II) levels, which have toxic effects. This method was applied to determine Cd and Pb levels in cold-pressed olive oil brought from 5 different provinces of Turkey. The samples were dissolved in microwave digestion using concentrated HNO3 and H2O2. Analyses were carried out in acetate buffer (pH 4) to which EDTA was added. The LOD for Cd and Pb was found as 0.74, 0.52 µg L-1 and the LOQ was 0.96, 0.82 µg L-1. Additions were made from standard Cd and Pb solutions and the % recovery values were measured as 98 and 99. The relative standard deviation (RSD, %) was found < 5. This method was found to be sensitive to the analyses of two toxic elements in cold pressed olive oil.

Fe-Ni@ACC Nanocomposite For Magnetic Dispersive Micro Solid-Phase Extraction Of Cu (II) From Food And Hair Samples

“…Spectrosc. 2023, 44 (3), 153-159. magnification ratio in Fig. 1 are examined comparatively, it can be easily seen that Ni-Fe grows the ACC surface by densely covering.…”

“…Spectrosc. 2023, 44 (3), 153-159. concentration in the certified reference material, it is seen that both are compatible.…”

“…Trace levels of heavy metals, which have significant positive and negative effects on the ecosystem and human health, are released into the environment through natural activities and/or human activities. [1][2][3] Copper at trace levels is of vital importance due to its duties in the biological systems of living things, on the other hand, high doses cause serious problems due to its toxicity. In the deficiency of copper which plays an important role in living metabolism, causes problems such as anemia, decrease in body resistance, weakness, fatigue, decreased growth, iron deficiency, fragile bones, skin scars, eczema, mitochondrial destruction, DNA breakage, injury to neuronal cells and deterioration in differentenzymes.…”