Physical properties such as density: viscosity, pH and conductance of commercial milk samples have been determined. Total solids, water, sugar and protein contents of milk samples are also estimated. A simple and low cost digestion method has been developed for quantitative analysis of Na, K, Ca, Mg and Zn in milk samples using flame atomic absorption spectrometry. The method involves partial digestion of samples using nitric acid at 105 ± 5° C in oil bath for forty-five minutes. Relative standard deviation for Na, K and Ca is better than I % and for Mg and Zn around 2%. The concentration ranges for Na, K, Ca, Mg and Zn are 240.00 -776.50, 422.50 - 710.00,831.75 - 1172.50,51.23 - 108.51 and 2.88 - 7.31 j.lg mrl respectively.
S B NIAZI ,A RAZA ,M Y KHOKHAR ,F MAHMOOD ,
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