Document Type
Thesis
Publication Date
1997
Disciplines
Chemistry
Advisor
Michael Ross
Abstract
Liquid-Liquid Extraction using methylene chloride, Liquid-Liquid extraction using a 75:25 mexanes: ethyl acetate solvent, and Solid Phase Extraction using C-18 disks were compared. Aliquots of water spiked with alachlor, atrazine, and trifluralin were extracted using each of the techniques. The extracts were concentrated and analyzed using Gas Chromatography/Mass Spectrometer with Selected Ion Monitoring. A surrogate, 2-nitro-m-xlene, and an internal standard, phenanthrene-d10,, were used. At spiking levels of 5-60 ug/L, there was not a significant statistical difference between the three methods when the liquid extractors were run for 24 hours. There was however a difference between the solid phase extraction and the liquid-liquid extractions when the liquid extractors were run for only 3 hours.
Copyright Statement
Available by permission of the author. Reproduction or retransmission of this material in any form is prohibited without expressed written permission of the author.
Recommended Citation
Lapos, Julie A., "Comparative Analysis of Pesticide Extraction Methods" (1997). Honors Theses, 1963-2015. 636.
https://digitalcommons.csbsju.edu/honors_theses/636