title: Direct acetylation and determination of chlorophenols in aqueous samples by gas chromatography coupled with an electron-capture detector.
abstract: A method was developed that offers a rapid, simple and accurate technique for the determination of chlorophenols at trace levels in aqueous samples with very limited volumes of organic solvents. These compounds were acetylated, then preliminarily extracted with n-hexane. The enriched chlorophenols were directly analyzed using gas chromatography with an electron-capture detector. The detection limits were in the range of 0.001-0.005 mg/L, except for 2-chlorophenol, which was always above 0.013 mg/L. Relative standard deviation for the spiked water samples ranged from 2.2 to 6.1%, while relative recoveries were in the range of 67.1 to 101.3%.
authors.affiliation: Chemistry Department, College of Education, University of Baghdad, Baghdad, Iraq. khalid.janabi@gmail.com
authors.forename: Khalid Waleed S
authors.initials: KW
authors.lastname: Al-Janabi
authors.forename: Fatin Nafea
authors.initials: FN
authors.lastname: Alazawi
authors.forename: M Ibrahim
authors.initials: MI
authors.lastname: Mohammed
authors.forename: Abdul Amir H
authors.initials: AA
authors.lastname: Kadhum
authors.forename: Abu Bakar
authors.initials: AB
authors.lastname: Mohamad
mesh_terms: D000107:Acetylation; D002733:Chlorophenols / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D002849:Chromatography, Gas / Q000379:methods*; D006586:Hexanes / Q000737:chemistry; D060106:Lakes / Q000737:chemistry; D057230:Limit of Detection; D011891:Rain / Q000737:chemistry; D015203:Reproducibility of Results; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D002733:Chlorophenols; D006586:Hexanes; D014874:Water Pollutants, Chemical; C026385:n-hexane