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Anal Chim Acta

Title:		Application of hollow fiber liquid phase microextraction for pinic acid and pinonic acid analysis from organic aerosols
Author(s):		Hyder M; Genberg J; Jonsson JA;
Address:		"Centres for Analysis and Synthesis, Department of Chemistry, Lund University, Lund, Sweden. Murtaza.Hyder@organic.lu.se"
Journal Title:		Anal Chim Acta
Year:		2012
Volume:		20111202
Issue:
Page Number:		79 - 85
DOI:		10.1016/j.aca.2011.11.046
ISSN/ISBN:		1873-4324 (Electronic) 0003-2670 (Linking)
Abstract:		"A method based on hollow fiber liquid phase microextraction (HF-LPME) for analysis of pinic acid and pinonic acid was developed and for the first time successfully applied to ambient aerosol samples. In this method, the aerosol samples were dissolved in 0.05 M H(2)SO(4) and the solution was extracted using three-phase HF-LPME where donor phase was 0.1 M (NH(4))(2)CO(3). Different parameters like type of organic solvent for membrane phase, extraction time and stirring speed etc. were optimized. Optimum extraction time was 4.5 h and optimum-stirring speed was found to be 900 rpm. We used 6-undecanone as organic phase along with tri-n-octylphosphine oxide (optimum TOPO contents was 15% w/v), which gave an enormous enrichment for both pinic and pinonic acid. Enrichment factors of 28,050 and 27,400 times were obtained for pinonic acid and pinic acid, respectively, that are the highest ever published. The extraction efficiency for pinic acid and pinonic acid were 68.5% and 70.1%, respectively. Very low limits of detection were obtained. Values of 1.0 ng L(-1) and 0.5 ng L(-1) in aqueous solutions, corresponding to 24 pg m(-3) and 12 pg m(-3) in aerosol samples were the limits of detections for pinonic acid and pinic acid, respectively. Both pinonic acid and pinic acid were found in all aerosol samples analyzed"
Keywords:		"Aerosols/*chemistry Gas Chromatography-Mass Spectrometry *Liquid Phase Microextraction Membranes, Artificial Sulfuric Acids/chemistry Time Factors Volatile Organic Compounds/analysis/*chemistry;"
Notes:		"MedlineHyder, Murtaza Genberg, Johan Jonsson, Jan Ake eng Netherlands 2011/12/28 Anal Chim Acta. 2012 Feb 3; 713:79-85. doi: 10.1016/j.aca.2011.11.046. Epub 2011 Dec 2"