Gamma Radiolytic Degradation of 4-CP: Determination of Degraded Products with HPLC and GC-MS

  • S. Bilal Butt Central Analytical Facility Division, PINSTECH
  • M. Nasir Masood Central Analytical Facility Division, PINSTECH
  • Nasir Hayat Hengra Pakistan Institute of Engineering and Applied Sciences, P.O. Nilore, Islamabad, Pakistan
  • M. Mansha Ch Pakistan Institute of Engineering and Applied Sciences, P.O. Nilore, Islamabad, Pakistan

Abstract

Contamination by chlorophenols of surface water and groundwater is an emerging issue in environmental science and engineering. After their usage as pesticide, herbicide and disinfectant, these organic compounds subsequently enter the aquatic environment through a number of routes. Some of the chlorophenols are slightly biodegradable, while others are more persistent and mobile in the aquatic environment especially chlorophenols. Gamma radiolytic degradation is one of advance oxidation process that has been thought to be one of the promising treatments to deal with this problem.  This radiolytic study was carried out in methanolic 4-CP (4-chlorophenol) samples. Among several factors effecting radiolytic degradation of 4-CP, dose and concentration are important that were evaluated under atmospheric conditions. A degradation yield (G value) for 4CP of 0.38 and 1.35 was achieved in 20 and 100mg/dm3 solution. It was observed that degradation yield decreases with increasing 4-CP concentration. Gamma radiolysis produce free radicals in solvent which further react with 4-CP molecules to generate different products. The identification of degradation products was proposed using HPLC and GC-MS. 

Published
Dec 3, 2007
How to Cite
BUTT, S. Bilal et al. Gamma Radiolytic Degradation of 4-CP: Determination of Degraded Products with HPLC and GC-MS. Pakistan Journal of Analytical & Environmental Chemistry, [S.l.], v. 8, n. 2, p. 7, dec. 2007. ISSN 2221-5255. Available at: <http://pjaec.pk/index.php/pjaec/article/view/105>. Date accessed: 14 dec. 2018.