title: Optimization of a greener method for removal phenol species by cloud point extraction and spectrophotometry.
abstract: A greener method based on cloud point extraction was developed for removing phenol species including 2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol (2,4,6-TCP) and 4-nitrophenol (4-NP) in water samples by using the UV-Vis spectrophotometric method. The non-ionic surfactant DC193C was chosen as an extraction solvent due to its low water content in a surfactant rich phase and it is well-known as an environmentally-friendly solvent. The parameters affecting the extraction efficiency such as pH, temperature and incubation time, concentration of surfactant and salt, amount of surfactant and water content were evaluated and optimized. The proposed method was successfully applied for removing phenol species in real water samples.
authors.affiliation: Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia; Advance Medical & Dental Institute, Universiti Sains Malaysia, 13200 Kepala Batas, Pulau Pinang, Malaysia. Electronic address: irah_kap@yahoo.com.
authors.forename: N N M
authors.initials: NN
authors.lastname: Zain
authors.forename: N K
authors.initials: NK
authors.lastname: Abu Bakar
authors.forename: S
authors.initials: S
authors.lastname: Mohamad
authors.forename: N Md
authors.initials: NM
authors.lastname: Saleh
mesh_terms: D002733:Chlorophenols / Q000302:isolation & purification*; D055772:Green Chemistry Technology / Q000379:methods*; D009596:Nitrophenols / Q000302:isolation & purification*; D013053:Spectrophotometry; D013501:Surface-Active Agents / Q000737:chemistry; D014867:Water / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D002733:Chlorophenols; D009596:Nitrophenols; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; D014867:Water; C024564:2,4,6-trichlorophenol; C004762:2,4-dichlorophenol; C024836:4-nitrophenol
keywords: Cloud point extraction; Greener method; Phenol; UV–Vis spectrophotometer; Water sample