Determination of selected metals in rice and cereal by inductively coupled plasma-optical emission spectrometry (ICP-OES)

A study to determine the concentration of metals in a variety or rice and cereal foods from various locations was performed using inductively coupled plasma-optical emission spectrometry (ICP-OES). According to the results of the study, in our samples no concentrations of Ni, Pb, Sb, Se and V were found except for Red Gram, Green Gram and Black Gram for which Ni was 6.8 ppm, 8.0 ppm and 8.8 ppm, respectively, and for Black Gram, Cow Peas and Black Sesame Seeds for which V was 4.8 ppm, 8.8 ppm, and 3.4 ppm, respectively. Despite the large geographic differences, shape and color, the metal concentrations were somewhat similar. Sample concentration for Al were at 3.9 ppm to 207 ppm, except for Black Gram which was at 4400 pm, for Cu at1.7–13.6 pm, for Mg at 243–1526 ppm with outlier of 3230 ppm (Black Sesame Seeds), for Mn at 4.3–118 ppm, for Zn at 1.2–22.3 ppm and Fe at 8.9 to 99.5 with an outlier of 210 ppm for Flattened Rice.