Synthesis and Fluorescence Spectrum of N, N' Bis (2-Hydroxy Benzylidene) Benzidine with Different Solvents and Different PH
Zeyad A. Saleh,
Dhaidan Kh. Kafi
Issue:
Volume 5, Issue 4, August 2017
Pages:
36-44
Received:
21 January 2017
Accepted:
16 February 2017
Published:
30 October 2017
Abstract: In this study, a fluorescent compound; N, N'-Bis (2-Hydroxy Benzylidene) Benzidine, (C26H20N2O2) prepared and calculated by FT-IR, 1H NMR, UV-Vis and fluorescence procedures. The 1H NMR field examined in Chloroform-d solvent. The Fourier Transform-Infrared FT-IR in hard case detected in the area 4000-600 cm-1. The absorption spectrum of the Bis (2-Hydroxy Benzylidene) Benzidine resolved in tetrahydrofuran registered on the range 250-800nm. The fluorescence spectrum show in the region 520-700nm in different pH at room temperature. Photoluminescent properties of the title compound examined in tetrahydrofuran, Chloroform, acetone, and Toluene. The intensity and Stoke’s move of N, N' Bis (2-Hydroxy Benzylidene) Benzidine in THF solvent found greater than other solvents. The structural value, fundamental vibration modes, Proton Nuclear magnetic resonance isotropic chemical changes, and absorption spectrum of the N, N'-Bis (2-Hydroxy Benzylidene) Benzidine computed by density functional theory (DFT) using B3LYP/6-311G (d, p) basis set.
Abstract: In this study, a fluorescent compound; N, N'-Bis (2-Hydroxy Benzylidene) Benzidine, (C26H20N2O2) prepared and calculated by FT-IR, 1H NMR, UV-Vis and fluorescence procedures. The 1H NMR field examined in Chloroform-d solvent. The Fourier Transform-Infrared FT-IR in hard case detected in the area 4000-600 cm-1. The absorption spectrum of the Bis (2-...
Show More
Annual Effective Dose of Radon-222 in Well Water Samples in Male Adults: Idah, Nigeria
Philip Musa Gyuk,
Arome Aruwa,
Matoh Dary Dogara,
Isaac Hyuk Daniel
Issue:
Volume 5, Issue 4, August 2017
Pages:
45-49
Received:
24 October 2017
Accepted:
6 November 2017
Published:
15 December 2017
Abstract: A total of 25 well water samples from various locations of Idah and environs including Ofukolo, Ega, Ede - Adejo, and Ede - Alaba, have been investigated for their 222Rn concentrations using liquid scintillation counter manufactured by Packard Instrument Company. The concentration of 222Rn in the well water samples was found to vary in the range 3.0± 2.00 – 18.24± 1.50 Bq/L and a mean concentration of 9.64 Bq/L with An average mean concentration of 10.23 Bq/L recorded respectively. The results showed that 222Rn concentration in well water sources were greater than the maximum concentration limit (MCL) of 11.1Bq/L set by USEPA and 10.0 Bq/L set by WHO. The annual effective dose by ingestion for adult male was found to be in the range 0.0198 mSv/y to 0.1198 mSv/yand an average of 0.0721 mSv/y which are lower than the annually received effective dose as set by ICRP.
Abstract: A total of 25 well water samples from various locations of Idah and environs including Ofukolo, Ega, Ede - Adejo, and Ede - Alaba, have been investigated for their 222Rn concentrations using liquid scintillation counter manufactured by Packard Instrument Company. The concentration of 222Rn in the well water samples was found to vary in the range 3....
Show More
