oa South African Journal of Chemistry - Micelle-mediated extraction and cloud point pre-concentration for the spectrophotometric determination of phenol in water samples : research article
|Article Title||Micelle-mediated extraction and cloud point pre-concentration for the spectrophotometric determination of phenol in water samples : research article|
|© Publisher:||South African Chemical Institute (SACI)|
|Journal||South African Journal of Chemistry|
|Affiliations||1 Malek Ashtar University of Technology, Iran, 2 Malek Ashtar University of Technology, Iran and 3 Malek Ashtar University of Technology, Iran|
|Publication Date||Jan 2011|
|Pages||158 - 162|
|Keyword(s)||Cloud point extraction, Phenol, Pre-concentration, Spectrophotometry and Water samples|
In this paper, a cloud point extraction method for the determination of trace amounts of phenol by spectrophotometry is described. The method is based on the colour reaction of phenol with diazotized p-nitroanilinean alkaline media and the cloud point extraction of azo dye product using of nonionic surfactant Triton X-114. The effects of reaction and extraction parameters were studied and optimum parameters were established. The calibration graph was linear in the range of 2.0-400 ng mL-1 of phenol. Detection limit based on three times the standard deviation of the blank (3Sb) was 1.0 ng mL-1 and the relative standard deviation (RSD) for 50 ngmL-1 of phenol was 1.73%(n=10). The proposed method was applied for the determination of phenolin water samples.
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