Basic Information
Abstract Number: 2260-5    
Author Name: Earl Michael Thurman Affiliation: University of Colorado
Session Title: Environmental Applications of High Resolution Mass Spectrometry
Event Type: Symposia
Event Title: Accurate Mass Analysis of Hydraulic Fracturing Waters
Presider(s): Thurman, Earl Michael Start Time: 10:25 AM ( Slot # 6 )
Date: Thursday, March 21st, 2013 Location: 118C
Keywords: Environmental/Water, Fuels\Energy\Petrochemical, Liquid Chromatography/Mass Spectroscopy

Ferrer, ImmaUniversity of Colorado

Abstract Content
We found both a hydrophilic and a hydrophobic series of ethyoxylated surfactants in three hydraulic fracturing water samples using liquid chromatography/quadrupole time-of-flight mass spectrometry. We then used the Kendrick Mass defect to differentiate the various adducts of the ethoxylates, in particular, the proton, ammonium, and sodium adducts of each of the chains of ethoxylates in both singly and doubly charged forms. Subsequently, we also used the Kendrick Mass defect, for the first time, in MS/MS mode to detect the sequential fragmentation of a series of ethyoxlated polyethylene glycols (PEGs) up to 33 EO units longs. We have designed a database of accurate masses along with their retention times by UHPLC in order to have a rapid and accurate analysis of either groundwater or surface water samples that have been treated with fracking solutions. The mass analysis for these compounds will be explained in detail. Finally, we apply this technique to water samples that have possible contamination sources from the fracking process.