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- W2247481331 abstract "of Dissertation Inductively coupled mass spectrometry has, over the years, been a useful tool for the analytical chemist through the capability to qualitatively and quantitatively determine the elemental composition of unknown inorganic substances. Identification has occurred in a large variety of sample matrices such as, water, soil, inks, and industrial wastes. Within the last decade the matrix of interest has expanded into the biological realm. The ability to separate these complex bio-matrices requires reverse phase separation and usually implies the use of an organic modifier in the mobile phase. Due to the nature of the argon plasma, the use of carbon based modifiers destabilizes the plasma at the standard flow rates, decreasing the available ionization energy and depositing carbon on the sampling cone, clogging the entrance into the mass spectrometer interface. Current research involves evaluating commercially available micro-flow nebulizers which can allow the introduction of organic modifiers for increased chromatographic resolution of sample analytes because of the much lower solvent load to the plasma. Comparisons of various capillary flow nebulizers and spray chamber configurations are presented. An in-house spray chamber designed by the author is also evaluated. Sensitive and selective techniques for detecting phosphorusand sulfurbased analytes with an ICPMS equipped with an rf only driven octopole collision/reaction cell (CRC) are investigated. The first technique utilizes Xe gas to reduce and remove polyatomic interferences from P and S. The second uses an oxidation reaction to form new product ions, PO and SO, to move elemental phosphorous and sulfur away from the mass range of elemental interferences." @default.
- W2247481331 created "2016-06-24" @default.
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- W2247481331 date "2008-01-01" @default.
- W2247481331 modified "2023-09-27" @default.
- W2247481331 title "Interfacing Conventional and Capillary Flow to Argon Plasma: Elemental Detection for Bio-Analytical Applications" @default.
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- W2247481331 hasPublicationYear "2008" @default.
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