PMID- 23601280 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20131108 LR - 20130422 IS - 1873-4324 (Electronic) IS - 0003-2670 (Linking) VI - 776 DP - 2013 May 7 TI - Preparation and examination of monolithic in-needle extraction (MINE) device for the direct analysis of liquid samples. PG - 50-6 LID - S0003-2670(13)00362-0 [pii] LID - 10.1016/j.aca.2013.03.022 [doi] AB - Combination of extraction and chromatographic techniques opens NEW possibilities in sample preparation area. Macroporous poly(styrene-divinylbenzene) (PS-DVB) monoliths were prepared by in situ polymerization in stainless steel needles. The surface of stainless steel needle was modified earlier by the silane coupling agent. Monolithic materials located inside needles were used as the in-needle extraction device. Scanning electron microscope (SEM) images were obtained for nine monoliths. Spectra of prepared materials were also performed with the use of two techniques: Attenuated Total Reflectance (ATR) and Fourier Transform Infrared Spectroscopy (FTIR). The new monolithic in-needle extraction (MINE) devices were used in the preparation of a series of test water samples for chromatographic analysis. The extraction of phenolic compounds from water samples was carried out by pumping liquid samples through the MINE device. Obtained results indicate a high efficiency of in-needle extraction systems based on monolithic materials. Breakthrough volume and the sorption efficiency of prepared monolithic in-needle extraction devices were determined experimentally. The achieved recovery was close to 90%, and determined LOQ values varied between 0.4 and 6 mug. CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Pietrzynska, Monika AU - Pietrzynska M AD - Poznan University of Technology, Institute of Chemical Technology and Engineering, Poznan, Poland. monikapietrzynska@gmail.com FAU - Voelkel, Adam AU - Voelkel A FAU - Bielicka-Daszkiewicz, Katarzyna AU - Bielicka-Daszkiewicz K LA - eng PT - Journal Article DEP - 20130325 PL - Netherlands TA - Anal Chim Acta JT - Analytica chimica acta JID - 0370534 EDAT- 2013/04/23 06:00 MHDA- 2013/04/23 06:01 CRDT- 2013/04/23 06:00 PHST- 2013/01/29 00:00 [received] PHST- 2013/02/28 00:00 [revised] PHST- 2013/03/03 00:00 [accepted] PHST- 2013/04/23 06:00 [entrez] PHST- 2013/04/23 06:00 [pubmed] PHST- 2013/04/23 06:01 [medline] AID - S0003-2670(13)00362-0 [pii] AID - 10.1016/j.aca.2013.03.022 [doi] PST - ppublish SO - Anal Chim Acta. 2013 May 7;776:50-6. doi: 10.1016/j.aca.2013.03.022. Epub 2013 Mar 25.