Comparison of Ice Core Dissolved Organic Matter from a Greenland Ice Core by Nanospray Fourier Transform Ion Cyclotron Resonance Mass Spectrometry ...
Recent studies of ice cores have embarked on the task of determining the classes of dissolved organic matter (DOM) present in melt-water from the cores collected in numerous locations in the northern and southern hemispheres. This DOM originally derives from wet precipitation and is thought to refle...
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Old Dominion University
2010
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| Online Access: | https://dx.doi.org/10.25777/r1g2-cm37 https://digitalcommons.odu.edu/chemistry_etds/136/ |
| Summary: | Recent studies of ice cores have embarked on the task of determining the classes of dissolved organic matter (DOM) present in melt-water from the cores collected in numerous locations in the northern and southern hemispheres. This DOM originally derives from wet precipitation and is thought to reflect atmospheric organic matter derived from anthropogenic and non-anthropogenic sources. Because the amount of DOM is so low, previous studies have necessarily used large sample volumes (greater than 500 mL) to concentrate sufficient ice core DOM necessary for mass spectral analysis. Solid phase extraction (SPE) with C18 resins was followed by evaporative concentration and electrospray ionization, by direct infusion, coupled to ultrahigh resolution mass spectometers to analyze core samples. To mitigate the need for large volumes of ice core melt-water, I am here proposing to employ nanospray ionization Fourier transform ion cyclotron resonance mass spectrometry as an efficient tool for examining ice core DOM, due ... |
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