Simple and Rapid Spectrophotometric Method for Phenol Determination in Aqueous Media
Journal Title: BULETINUL INSTITUTULUI POLITEHNIC DIN IASI, CHIMIE SI INGINERIE CHIMICA - Year 2018, Vol 64, Issue 3
Abstract
Simple and selective determination of phenol from aqueous media was spectrophotometrically examined using ferric chloride as colour reagent. The reaction between phenol and FeCl3 occurs rapidly (1-2 min), without to be necessary the adjustment of solution pH. The visible spectra of the purple complex, recorded against distilled water, show a maximum at 540 nm, and the absorbance remains stable for at least 10 hours. This method allows the determination of phenol from aqueous media in a relatively wide concentration range (0.09 – 2.30 mg·mL-1), with acceptable detection limits. The interferences caused by methanol, ethanol, acetone and ethylic ether were evaluated on the basis of the selectivity coefficients. The validation of the proposed method was done by recovery tests of phenol in tap water. Experimental results indicate that the proposed method allows a rapid and simple quantitative determination of phenol in aqueous media, and can be used to test the quality of industrial effluents.
Authors and Affiliations
ALEXANDRA GEORGIANA APOSTICĂ, TATIANA ICHIM, VERONICA MĂDĂLINA RADU, LAURA BULGARIU
Keywords
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