In addition, there was a clear increase in the cadmium absorption signal, both in height and in intergrated absorbance. Gonzalez et al. used a mixture of nitric acid and hydrogen peroxide in the determination of cobalt, chromium and nickel in wheat flour samples by SIS-ET AAS as oxidant modifier of the carbonaceous residues that are retained on the platform due incomplete destruction of the organic matric.Cal-Prieto et al.also encouraged the use of H2O2 to reduce the background and accumulation of carbonaceous residues of biological materials.The mass of Wheat flour that could be used for the direct SS determination of cadmium under the above established conditions has also been investigated.