Analytical study for determination of some cations which its existence is possible in ground water in Alkalamoon area

The ground water is still the main resource of water in some areas in Syria. For this reason some Cations in the ground water in Alkalamoon were determined. The concentrations of Ca[2+], Mg[2+], Na[+], K[+] and Fe[2+] were determined by different analytical methods. Na[+], and K[+] were determined by flame photometer. Ca[2+], and Mg[2+] were titrated by 0.01 M solution. While Fe[2+] formed a colored complex with 1, 10 phenanthroline, and its absorbance was measured by spectrophotometer. The results of determination illustrated that the concentration of K[+] in the samples of Alhumaira is more than its concentration in all other analyzed samples, whereas the least concentrations of K[+] were in the samples of Deir-Atia and Kara. The concentrations of Ca[2+] were the largest in the samples of Alhumaira and Alkastal. The concentrations of Fe[2+] were less than the allowed concentration in all analyzed samples

assessment of fat stability in some food products

Oxidative rancidity was studied on 256 Samples of fourth food products [Potato chips, popcorn, whole powdered milk, chocolate]. They were stored under different conditions, studied during storage time [6 months] by applying these tests: peroxide value, TBARs, Absorbance at lambda = 232 nm and lambda = 270 nm, and determination of free fatty acids [FFA]. The results show that peroxide values increase with time and the products have been expired before the labeled date. The results are due to lipid oxidation by influencing of various factors