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Full-Text Articles in Physical Sciences and Mathematics
Extending The Limits Of Solid Phase Microextraction, Shilpi Chopra
Extending The Limits Of Solid Phase Microextraction, Shilpi Chopra
Seton Hall University Dissertations and Theses (ETDs)
Solid phase microextraction (SPME) is a solventless extraction technique that combines sample preparation and sample introduction into a gas chromatograph into a single step. For the past 20 years, solid-phase micro-extraction (SPME) has been used in numerous fields such as: food analysis, including juices, alcohols fruits and vegetables for volatiles, aroma, caffeine, fatty esters, environmental applications including volatile organic contaminants, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, phenols, pesticides, steroids, herbicides, acid/neutral/base compounds, and organometallic compounds from water, air, soil, sludge, and sediment samples and in biomedical analysis.
This work demonstrates the extension of the limitations of SPME with respect to extraction …
Ionic Liquids In Micro Extractions And Gas Chromatographic Stationary Phases, Ramkumar Dhandapani
Ionic Liquids In Micro Extractions And Gas Chromatographic Stationary Phases, Ramkumar Dhandapani
Seton Hall University Dissertations and Theses (ETDs)
Ionic liquids are salts that exist entirely as ionic species. They are composed of cation, anion and side chain or linkage group. Due to the different combination of the these groups, the ionic liquid exhibits unique selectivity. Their applications are enormous in the field of analytical chemistry.
The interest of using ionic liquids as gas chromatographic stationary phase has increased in recent years. The low volatility, tailorable physico-chemical property and high thermal stability of ionic liquids make them an ideal choice for gas chromatographic stationary phase. For the present research, commercially available ionic liquid capillary columns were investigate for thermodynamics …