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Levels of Heavy Metals in Pasta Available in the Nigerian Market

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– Levels of Heavy Metals in Pasta Available in the Nigerian Market –

Download Levels of Heavy Metals in Pasta Available in the Nigerian Market. Pure and Industrial Chemistry students who are writing their projects can get this material to aid their research work.

Abstract

The concentrations of Ni, Mn, Cd, Cu, Zn, Pb and Cr, were determined in some pastas consumed in Nigeria, with a view to providing information on the dietary intakes of heavy metals and exposure of humans to toxic metals.

The concentrations of these seven (7) elements were determined by atomic spectrometry after nitric acid/perchloric acid digestion.

The concentrations of the metals (µg/g) in the locally manufactured pasta samples were in the following ranges: Ni (0.109 – 0.344); Mn (0.377 – 2.279); Cd (Nd to 0.011); Cu (0.115 – 0.287); Zn (0.162 – 4.846); Pb (0.315 – 0.542); Cr (0.003 – 0.178).

The concentrations of the metals (µg/g) in the imported pasta samples were in the following ranges: Ni (0.077 – 0.234); Mn (Nd – 1.118); Cd (Nd – 0.779); Cu (0.028 – 0.289); Zn (0.015 – 2.141); Pb (0.328 – 0.847); Cr (Nd – 0.125).

The estimated daily intakes of metals (µg/kg bw/day) from the consumption of local pasta were in these ranges, for noodles: (0.003 – 1.366) for generally exposed children and adults; (0.005 – 2.342) for typically exposed children and adult;

Introduction

In line with industrial development; pollution in the environment, and consequently agricultural raw materials, leads to high levels of food contamination across the world from the food safety viewpoint.

Cases of environmental pollution confronted very frequently and threatening food safety is due to heavy metals.

As a result of soil, atmosphere, underground and surface water pollution, our foods and beverages are getting contaminated by heavy metals.

Heavy metals occur in all food as natural or inherent component of plant and animal tissues and fluids and also maybe present as a result of contamination or deliberate addition.

Heavy metal is a term given to a group of metals and metalloids which in their standard states have atomic density greater than 5g/cm3, usually associated with pollution and toxicological problems.

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