- Turkish Journal of Chemistry
- Vol: 23 Issue: 4
- A Modified Potentiometric Method for the Estimation of Phenol in Aqueous Systems
A Modified Potentiometric Method for the Estimation of Phenol in Aqueous Systems
Authors : Farhat Huma, Muhammad Jaffar, Khalid Masud
Pages : 415-422
View : 10 | Download : 5
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :A modified potentiometric titration is proposed for the estimation of phenol in aqueous systems. The method is evolved on the basis of a critical dependence of pH on log V rather than simple V, as used in conventional potentiometric titrations. The method incorporates titrants in a concentration range several orders of magnitude greater than that of phenol in the aqueous phase. Derivative potentiometric curves so obtained provide a clear exposition of the equivalence point and the overall error is found to be between \pm 1.0 and 1.5%. The range of phenol concentration investigated was from 10-2 to 10-3 M. and that of sodium hydroxide used as the titrant from 10-1 to 4.0 M. The maximized titrant concentrations were found to be helpful in controlling the dilution problem during titration. The lowest detection limit achieved was 50 mg phenol/L and the method is well-suited to direct aqueous phase municipal sewage, home effluents and industrial discharges for phenol determination.Keywords : Turk. J. Chem., 23, (1999), 415-422. Full text: pdf Other articles published in the same issue: Turk. J. Chem., vol.23, iss.4.