Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Paper spray"”.
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Quantitation of Anti-Infectious Disease Molecules Utilizing Paper Spray Mass Spectrometry
… toward improved outcomes in serious infection. Paper spray ionization (PS), an emerging ambient ionization technique for clinical settings, demonstrations a wide versatility both in analyte variety and applications. This technique offers a rapid, accurate method to analyze these compounds with …
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Paper Spray - Mass Spectrometry: Investigation of Sampling Devices for Illicit Drug Detection and Quantification
Paper spray - mass spectrometry (PS-MS) has been developed as a rapid and direct ionization method for qualitative and quantitative analysis of complex samples at trace levels. In this work, different sampling devices for PS-MS were investigated to improve the assay’s simplicity and sensitivity …
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Expanding the Capabilities of Paper Spray Mass Spectrometry: High-Throughput Drug Screening and On-Paper Electrokinetic Stacking
Paper spray mass spectrometry (PS-MS) offers advantages in simplicity and rapid analysis but faces challenges that have limited its widespread adoption. These include insufficient sensitivity for certain analytes, susceptibility to matrix effects in complex samples, and inconsistent quantitative …
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Paper spray mass spectrometry (PS-MS) for toxicological drug screens and biomonitoring of chemical warfare agent exposure
Paper spray is an ambient ionization technique for mass spectrometry that is well-known for its ability to accomplish rapid and sensitive analyses without any need for sample preparation. This work further develops the technique in two major areas: negative ionization and drug screening. Negative …
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Preparative mass spectrometry applications in nanomaterials and organic synthesis
… the mechanism for charging in the zero volt paper spray will be presented. This works builds a computational model based on the statistical fluctuation of positive and negative charges based on the theory of Dodd. It is found through experiment and simulation that in zero volt paper spray and …
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Direct drug screening and lipid profiling using ambient mass spectrometry
… by MS. However, the performance of conventional spray-based ionization methods always suffers from chemical interferences derived from complex biological matrices. A series of sample extraction, purification, and separation steps is required before the ionization, so as to ensure excellent …
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Laboratory studies on the production of alpha-pinene-derived organic nitrates and their atmospheric fate
… identified in a complex mixture. In addition, paper spray ionization was adapted for the direct detection of organosulfates from filter samples and a Raman technique was developed to directly measure the pH of single aerosol particles, for the first time.</p>
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Additively Manufacturing High-Performance, Low-Cost Electrospray Ion Sources for Point-of-Care Mass Spectrometry
… of liquid biological samples, often via electrospray. This work broadly leverages additive manufacturing for the development of electrospray emitters, doubling signal-to-clutter ratios relative to state-of-the-art. We demonstrate low-cost integration in clinically-relevant diagnostics protocols …
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Mecanismos de tolerância e alterações metabólicas em plantas de linhaça dourada (Linum Usitatissimum L.) expostas e co-expostas a arsênio e selênio
… de massas com ionização ambiente PSMS (paper spray mass spectrometry) e DESI-MSI (desorption electrospray ionization mass spectrometry imaging). A identificação de compostos tiólicos (fitoquelatinas e seus metabólitos) e de compostos inorgânicos e orgânicos de As e Se em extratos de …