title: Electromembrane extraction and HPLC analysis of haloacetic acids and aromatic acetic acids in wastewater.
abstract: For the first time, haloacetic acids and aromatic acetic acids were extracted from wastewater samples using electromembrane extraction (EME). A thin layer of toluene immobilized on the walls of a polypropylene membrane envelope served as an artificial supported liquid membrane (SLM). The haloacetic acids (HAAs) (chloroacetic acid, dichloroacetic acid, and trifluoroacetic acid) and aromatic acetic acids (phenylacetic acid and p-hydroxyphenylacetic acid) were extracted through the SLM and into an alkalized aqueous buffer solution. The buffer solution was located inside the membrane envelope. The electrical potential difference sustained over the membrane acted as the driving force for the transport of haloacetic acids into the membrane by electrokinetic migration. After extraction, the extracts were analyzed by high-performance liquid chromatography-ultraviolet detection. The detection limits were between 0.072 and 40.3 ng L(-1). The calibration plot linearity was in the range of 5 and 200 μg L(-1) while the correlation coefficients for the analytes ranged from 0.9932 to 0.9967. Relative recoveries were in the range of 87-106%. The extraction efficiency was found to be comparable to that of solid-phase extraction.
authors: Department of Chemistry, King Fahd University of Petroleum and Minerals, KFUPM, Box 1509, Dhahran 31261, Saudi Arabia.
authors: Khalid
authors: K
authors: Alhooshani
authors: Chanbasha
authors: C
authors: Basheer
authors: Jagjit
authors: J
authors: Kaur
authors: Astrid
authors: A
authors: Gjelstad
authors: Knut E
authors: KE
authors: Rasmussen
authors: Stig
authors: S
authors: Pedersen-Bjergaard
authors: Hian Kee
authors: HK
authors: Lee
mesh_terms: D000085:Acetates / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004563:Electrochemistry; D008567:Membranes, Artificial; D011126:Polypropylenes / Q000737:chemistry; D052616:Solid Phase Extraction / Q000379:methods; D014867:Water / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D000085:Acetates; D008567:Membranes, Artificial; D011126:Polypropylenes; D014874:Water Pollutants, Chemical; D014867:Water; C006972:chloroacetic acid