title: Analytical procedure for the determination of chlorobenzenes in sediments.
abstract: This study presents the procedure for the determination of chlorobenzenes in sediment. It consists of solvent extraction (shaking overnight), extract clean-up with the use of a homemade glass column packed with activated silica gel and freshly activated copper, and slow solvent evaporation to a volume of 0.3 mL. Two-microliter extract portions are analyzed by means of gas chromatography with an Rtx-624 capillary column (60 m x 0.32 mm, d(f) = 1.8 microm) coupled with mass spectrometry (in selected ion-monitoring mode). Deuterated 1,2-dibromobenzene is used as the recovery standard. The recovery of this method for all chlorobenzenes is high (ranging from 78% to 107%) with the exception of monochlorobenzene, which is 58%. The method is also characterized by good precision, which is commonly accepted in the analysis of trace organic pollution.
authors.affiliation: Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology, 80-952 Gdansk, Poland.
authors.forename: Lidia
authors.initials: L
authors.lastname: Wolska
authors.forename: Piotr
authors.initials: P
authors.lastname: Konieczka
authors.forename: Anna
authors.initials: A
authors.lastname: Jastrzebska
authors.forename: Jacek
authors.initials: J
authors.lastname: Namieśnik