Determination of Lead and Cadmium Content in some Selected Processed Wheat Flour (original) (raw)

2016

Abstract

In this study, the concentrations of lead and cadmium in eight brands of processed wheat flour consumed were investigated. The metals were determined by flame atomic absorption spectrometry (FAAS) after pressurized microwave-assisted digestion of the processed wheat samples using a mixture of nitric acid (65% w/w HNO3), and hydrogen peroxide (30% v/v H2O2). The measurements were based on calibrations using fortified analytical solutions. The concentration of lead in the flour samples analyzed was in the range of 0.10 mg/kg to 0.20 mg/kg. However, cadmium concentrations were found to be below 0.005 mg/kg and not detected in some flour samples. Digestion efficiency of microwave assisted digestion combined with ease of operation and robust interface of FAAS is an effective way of detecting the presence of metals such as cadmium and lead in food samples. Calculation of monthly intake of cadmium and daily intake of lead showed that the consumption of average amounts of these foodstuffs d...

Isa Baba Koki hasn't uploaded this paper.

Let Isa know you want this paper to be uploaded.

Ask for this paper to be uploaded.