International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 9, September 2017

International Journal of Science and Technology


Spectrophotometric Study of Fe(III),Cd(II) and Pb(II)Complexes with 5,10,15,20-Tetra(p-Hydroxyphenyl)Porphyrin.

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Author Jihad A. Taies, Satar Gebier
On Pages 209-215
Volume No. 3
Issue No. 3
Issue Date March, 2013
Publishing Date March, 2013
Keywords Porphyrin, Ferric, Cadmium and Lead, Spectrophotometry.


Abstract

In this paper , the reaction of meso-tetra (4-hydroxyphenly)porphyrin with ferric, Cadmium and Lead ions have been studied in DMF solvent .The porphyrin was found to be a highly sensitive and highly selective reagent for direct Spectrophotometric determination of these ions at g level. The soret band of the complexes was found at 424 nm ( = 1.84 x105 L.M-1.CM-1), 440 nm ( = 5.2x 105 L.M-1.CM-1) and 466 nm ( = 5 x 105 L.M-1.CM-1), which is well separated from that of the reagent at 422nm (( = 3.3 x 105 L.M-1 CM-1), in the DMF solvent respectively. The complexes formation are slow at room temperature, however, it can be accelerated by heating and completed within 10 min at 100C?..Four determination of standard solutions containing 30 g/5ml, 20 g/5ml and 30 g/5ml for Fe(III),Cd(II) and Pd(II), gave a relative standard deviation of 0.495% ,1.29% and 2.039%. Beer's law is obeyed in the range of 0.01- 1.0, 0.01-0.5 and 0.01-0.84 g/5ml, sandell's index were 0.00395, 0.000212, 0.000416 for the absorbance of 0.001 respectively. The molar ratio of complexes are 1:1, the interferences of cations and anions were studied as well. This method was used to determine these ions in clay samples were taken from west of Iraq region and gave a satisfactory results.Keywords: Mammography, Quality Assurance, Quality Control, Mean Glandular Dose.

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