Journal Of Wassit For Science & Medicine

The nanocomposite (PPy/fMWCNT) is prepared via electrochemical polymerization onto indium tin oxide (ITO) coated glass for pyrrole (Py) monomer with oxalic acid (C2H2O4) and various concentration from functionalized multi wall carbon nanotube fMWCNT (0.01, 0.02) in the 130 mL from distilled water. The structure, morphology and optical properties of thin films were investigated via X-Ray diffraction (XRD), Filed Emission Scanning Electron microscopy (FE-SEM), ultraviolet-visible (UV-VIS) spectroscopy and Fourier Transform Infrared (FT-IR) Spectroscopy. The X-ray diffraction pattern indicates that the prepared thin films are of polycrystalline structure at 2θ= (25, 42)o. The band gap of thin films decreases from 2.4 to 2.09 eV as the fMWCNT increased from 0.01 to 0.02 M, whereas FTIR showing the distinctive bonds of these films

This paper describes the development of a spectrophotometric for the determination of copper by coupling with ligand (CHMBH). The a maximum absorption at (415nm) .Beer’s Lambert law is obeyed over the concentration ( 4-24 mg/L) limit of detection and limit of quantitation were found to be 0.00338 mg/L and 0.01025 mg/L for the area under curve and 0.1677 mg/L and 0.508 mg/L for zero order method, the high accuracy of both methods was 99.356 % for the area under curve method and 100.087 % for the zero order method respectively. Both methods have applied successfully to determination of copper with (CHMBH).
Keywords: Cu(ll), (CHMBH), (AUC), zero order.

Five regions in Salah -Din province Iraq were chosen to the study, concentration of radon in the rainwater falls in 2016. by using long-term technique for alpha particles emission with solid state nuclear track detector (SSNTD) CR-39, which have been used to determine the above radioactive isotopes concentrations in the samples. The results show the presence of some radioactivity on the area of Bieja refinery and it was measured to be (2.606) Bq.L-1 , the min average in Balad was (1.006) Bq.L-1, in general we found that radon 222Rn concentration, in the studied water samples, was less than the allowed permitted limit which is about 18 Bq.L-1, and it has no danger on human being life.

By using a conventional solid-state reaction technique, a group of the superconducting samples with nominal composition Bi2-xPb0.3WxSr2Ca2Cu3O10±δ with (0≤x≤0.5) sintered at 840ᵒC for 140h in the air have been prepared. The effect substitution of tungsten nanoparticles on the physical properties of Bi sites was studied. X-ray diffraction (XRD) studies showed that all our samples are polycrystalline with orthorhombic structures and presence two phases: high-Tc phase (2223), low-Tc phase (2212) and an impurity phase Some impurities likeSr2Ca2Cu7Oδ, CaO and WO . In the prepared samples the lattice parameter values and the volume fraction of high-Tc phase are calculated. Electrical resistivity measurements show that the values of critical temperature Tc increase with tungsten content. The highest transition temperature, Tc, obtained for Bi2-xPb0.3WXSr2Ca2Cu3O10+δ composition was 191.8K with x=0.3.