Determination of Cd, Pb and Ni in Syrian Cow Milk by Graphite Furnace Atomic Absorption Spectrometry

Abstract

Milk is an ideal food essential for newborns due to its composition and availability. In addition to its macronutrient, i.e. protide, glucide and lipids, milk also contains micronutrients, i.e. vitamins (A, D and B groups) and elements that are absolutely essential during the first months of a baby's life since it is the only source of nutrients 1. Milk contains several elements, which are essential or toxic such as cadmium, lead and nickel, due to these elements presence in the biosphere in general 2. Quantitation of essential and toxic trace elements in milk is an important analytical task, both for human health safety reasons and environmental bio-monitoring purposes. This requires elaboration and application of analytical methods of high sensitivity, selectivity and robustness. But the determination of trace inorganic constituents in milk is not a trivial task because of the complexity of the emulsion. Cow milk contains around 3.4 % of proteins, 2.8 % of casein, 3.7 % of fat and 4.6 % of lactose; additionally, the elements are present as different compounds that can affect both the sample preparation and the measurement strategies 3. Direct procedures for milk analysis were proposed using different spectro-analytical techniques. Each one presents some difficulties where Quinaia and Nobrega 4 , demonstrated that the presence of fat compounds affects the performance of the auto-sampler in graphite furnace

Vortex-Assisted Ionic Liquid Microextraction Coupled to Graphite Furnace Atomic Absorption Spectrometry for Preconcentration and Determination of Trace Levels of Cadmium in Real Samples

“…spectrometry (FAAS) 6,7 , graphite furnace atomic absorption spectrometry (GFAAS) 8,9 , inductively coupled plasma emission spectrometry (ICP-OES) 10,11 , inductively coupled plasma mass spectrometry (ICP-MS) 12 . Graphite furnace atomic absorption spectrometry (GFAAS) has been widely used for determination of trace quantities of cadmium because of high sensitivity.…”

Synthesis of 1-(2-Methoxybenzyl)-1,10-phenanthrolin-1-ium Bromide from Gandapura Oil

“…Due to the remarkable complexing property, this compound has been widely applied in various fields. For the analytical application, it has been utilized in the analysis of metal ions, such as iron as well as captropril drug [1]. In organic chemistry, the ligand properties of 1,10-phenanthroline and its derivatives are often employed in transition metal-catalyzed-reactions [2].…”

A membrane filtration procedure for the enrichment, separation, and flame atomic absorption spectrometric determinations of some metals in water, hair, urine, and fish samples

“…Recently, environmental pollution by heavy metals has received considerable attention. Wide technological use in industry and traffic are the primary source for traces metal ions in the environment [1][2][3][4][5][6][7]. Therefore, sensitive, reproducible, and accurate instrumental techniques are necessary to determine trace amounts of metals in such environmental samples.…”