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http://dx.doi.org/10.5322/JES.2010.19.12.1447

Analysis of Volatile Fatty Acids in Air by Dynamic SPME  

Yu, Mee-Seon (Department of Chemistry, University of Ulsan)
Yang, Sung-Bong (Department of Chemistry, University of Ulsan)
Ha, Nam-Ki (Department of Chemistry, University of Ulsan)
Publication Information
Journal of Environmental Science International / v.19, no.12, 2010 , pp. 1447-1454 More about this Journal
Abstract
In this study, the detection limits of lower fatty acids in air were investigated by using Dynamic SPME(Solid Phase Micro-Extraction), i.e. improved Head Space - SPME method(HS-SPME). This Dynamic SPME, called SPDE(Solid Phase Dynamic Extraction), is the analytical method for volatile compounds in air with the extraction by using a stainless steel needle of which inner surface is coated with adsorption material and following the gas chromatographic analysis by inserting the needle into a injection port of GC and subsequently, desorption of the volatile compounds into a gas-chromatographic column. Extraction was carried out by passing the sample air through the needle with a suction pump which has been used for a detection tube. The result of measurement for the 6 lower fatty acids showed that the detection limits ranged from 0.10 ppm to 0.44 ppm and the linear correlation coefficients were over 0.99. Relative standard deviations obtained from 5 analytical repetition of a ca. 1.6 ppm standard mixture were in the range of 1.87%~2.47%. This method has been shown to be a adequate for the measuring C2~C5 fatty acids in air in the concentrations of over several hundreds ppb.
Keywords
Environmental analysis; Volatile fatty acids; Dynamic SPME; SPDE;
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