Determination of Chlorophenols in Sediments Using Ultrasonic Solvent Extraction Followed by Stir Bar Sorptive Extraction Coupled to TD-GC-MS

Autor:	Mikuláš Bartal, Peter Tölgyessy, Katarina Silharova, Branislav Vrana, Zoltán Krascsenits
Rok vydání:	2008
Předmět:	Chlorophenol Chromatography Organic Chemistry Clinical Biochemistry Extraction (chemistry) Biochemistry Analytical Chemistry chemistry.chemical_compound Acetic anhydride chemistry Sample preparation Gas chromatography Gas chromatography–mass spectrometry Derivatization Dichloromethane
Zdroj:	Chromatographia. 69:389-392
ISSN:	1612-1112 0009-5893
DOI:	10.1365/s10337-008-0877-y
Popis:	A rapid method for analysis of chlorophenol content in sediments was developed using ultrasonic solvent extraction followed by stir bar sorptive extraction. The sediment sample is extracted using methanol and dichloromethane (9:1) in an ultrasonic bath. The extract is then redissolved in water and phenolic compounds are derivatised using acetic acid anhydride. The derivates are preconcentrated on a stir bar coated with polydimethylsiloxane that is commercially available as Gerstel Twister which is then thermally desorbed and analysed by GC-MS. Method performance is illustrated and evaluated for the enrichment of up to 100 ng g−1 of selected chlorophenols in freshwater sediment samples. The method showed good linearity, recoveries and blank levels, as well as advantages such as sensitivity, simplicity, low cost and high feasibility.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e0d609c29f43e5240df6cffcfd56e646 https://doi.org/10.1365/s10337-008-0877-y Zobrazit plný text záznamu Full text from SpringerLink