Poly (o-toluidine) (POT) doped with salicylidene-o-aminophenol (SAP) was prepared and characterized using several spectroscopic techniques. The potential (PE) and optimum molecular geometric (OMG) energies and dipole moment (μ) in kcal/mol and debbye units of the different structures of the dopant (SAP) were calculated using molecular mechanics (MM) calculations. MM calculations suggest that the optimum geometric structure (OMG) of SAP-doped POT is at least three orders of magnitude (3.69 x 103) more stable than of that of the molecular geometric structure of the same matrix. 1HNMR spectra and MM calculations described that the –OH group in the dopant (SAP) is almost free. Decrease of the absorbance at ~600 nm due to the quinoid structure of the base form of POT (POT-EB) after addition of SAP at constant concentration of POT reveals that the POT-EB was reduced to a lower oxidation state by SAP during the formation of the SAP-doped POT matrix. The detection limit for dopant (SAP) is as low as 10.66 ppm (mg/L). Transparent composite of spectroactive particles (SAP-doped POT) with the following conventional host polymers, poly (acrylic acid) (PAA), poly (methyl metha acrylate) (PMMA), poly (vinyl alcohol) (PVA), poly (ethylene glycol) (PEG), and poly (vinylpyrrolidone) (PVP) were fabricated. This transparent coating composite can be useful in certain applications such as antistatic coating in electronic industry where a visual inspection is necessary.

Thermal decomposition of the solid state of poly(o-anisidine) (POAN) base (POAN-EB) and salt [doped with 5- sulfosalicylic (SSA) acid] (SSA-doped POAN) forms has been studied by thermogravimetric analysis (TGA) and differential thermal analysis (DTA) under non-isothermal conditions. The potential (PE) and optimum molecular geometric (OMG) energies of the repeating unit (tetramer form) of investigated matrix were calculated using molecular mechanics (MM+) calculations. These calculations (PE= −3.48×109 and OMG=−122.72 kJ mol−1) indicate that the optimum molecular geometric structure of this matrix is highly stable. The empirical formula of the doped polymer is best represented by [POAN-2SSA.n/ 6H2O] and substantiate by elemental analysis and MM+ calculations. The full polymer decomposition and degradation were found to occur in three stages during the temperature increase. The decomposition activation energy (Ed) of both POAN base (POAN-EB) and its doped (SSA-doped POAN) were calculated by employing different approximations. The heating rate of decomposition and the frequency factor (ko) as well as kinetic parameters were calculated for doped or base form of this matrix. A remarkable heating rate dependence of the decomposition rate of the SSA-doped POAN matrix was observed. Poly(o-anisidine), TGA, DTA, MM+ calculation

Thermal decomposition of the solid state of poly(o-anisidine) (POAN) base (POAN-EB) and salt [doped with 5- sulfosalicylic (SSA) acid] (SSA-doped POAN) forms has been studied by thermogravimetric analysis (TGA) and differential thermal analysis (DTA) under non-isothermal conditions. The potential (PE) and optimum molecular geometric (OMG) energies of the repeating unit (tetramer form) of investigated matrix were calculated using molecular mechanics (MM+) calculations. These calculations (PE= −3.48×109 and OMG=−122.72 kJ mol−1) indicate that the optimum molecular geometric structure of this matrix is highly stable. The empirical formula of the doped polymer is best represented by [POAN-2SSA.n/ 6H2O] and substantiate by elemental analysis and MM+ calculations. The full polymer decomposition and degradation were found to occur in three stages during the temperature increase. The decomposition activation energy (Ed) of both POAN base (POAN-EB) and its doped (SSA-doped POAN) were calculated by employing different approximations. The heating rate of decomposition and the frequency factor (ko) as well as kinetic parameters were calculated for doped or base form of this matrix. A remarkable heating rate dependence of the decomposition rate of the SSA-doped POAN matrix was observed. Poly(o-anisidine), TGA, DTA, MM+ calculation

يتناول البحث تقييم لمستوي بعض العناصر والأملاح في مياه الشرب والمياه الجوفية في عدة أماكن بمحافظة أسيوط، نظراً لارتباط صحة الحيوانات بهذه المناطق بمستوي تلك العناصر.