Krogh, Erik
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Recent Submissions
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Paper spray mass spectrometry for the direct, semi-quantitative measurement of fentanyl and norfentanyl in complex matrices [pre-print]
(Elsevier, 2018)Background: Fentanyl is a potent, synthetic opioid at the centre of an international health crisis that has seen thousands of fatal overdoses. Most analytical methods focus on the detection of fentanyl in blood and/or ... -
Rapid screening of carboxylic acids from waste and surface waters by ESI-MS/MS using barium ion chemistry and on-line membrane sampling [post-print]
(Springer, 2016-03)Negative ion tandem mass spectrometric analysis of aliphatic carboxylic acids often yields only non-diagnostic ([M-H]-) ions with limited selective fragmentation. However, carboxylates cationized with Ba2+ have ... -
A semi-quantitative approach for the rapid screening and mass profiling of naphthenic acids directly in contaminated aqueous samples [post-print]
(John Wiley & Sons, Inc., 2016-01)We report the use of a direct sampling, online analytical approach for the determination of acid extractable naphthenic acids in complex aqueous samples, known as condensed phasemembrane introductionmass spectrometry ... -
A novel thermally assisted membrane introduction mass spectrometry (MIMS) interface for the rapid and sensitive on-line measurement of volatile and semi-volatile organic contaminants in air and water at parts-per trillion level [pre-print]
(John Wiley & Sons, Inc., 2006-07-15)A coaxially heated membrane introduction mass spectrometry (MIMS) sampling interface is presented that demonstrates improved on-line performance for the direct measurement of semi-volatile organic compounds (SVOCs) in air ... -
Modeling analyte permeation in cylindrical hollow fiber membrane introduction mass spectrometry [pre-print]
(Elsevier, 2008-11-15)The time-resolved signal generated from membrane introduction mass spectrometry (MIMS) has been modeled in cylindrical coordinates to analyze the data from MIMS experiments, in which a capillary hollow fiber selectively ... -
The use of membrane introduction tandem mass spectrometry (MIMS-MS/MS) in field locations as an on-line quantitative environmental monitoring technique for trace contaminants in air and water [pre-print]
(Oxford University Press, 2009-01)Membrane introduction mass spectrometry (MIMS) is emerging as an important technique for on-line, real-time environmental monitoring. Because MIMS interfaces are simple and robust, they are ideally suited for operation in ... -
New pH-dependent photosubstitution pathways of syringic acid in aqueous solution: Relevance in environmental photochemistry [post-print]
(Elsevier, 2009-09-25)The aqueous photochemistry of 4-hydroxy-3,5-dimethoxybenzoic acid (syringic acid) (1) and related compounds has been studied to investigate the novel pH-dependent photosubstitution pathways exhibited upon photolysis. ... -
Membrane introduction mass spectrometry (MIMS): A versatile tool for direct, real-time chemical measurements [pre-print]
(John Wiley & Sons, Inc., 2014-12)Membrane introduction mass spectrometry (MIMS) is a direct, continuous, online measurement technique. It utilizes a membrane to semi-selectively transfer analyte mixtures from a sample to a mass spectrometer, rejecting ... -
On-line measurement of oxidative degradation kinetics for trace gasoline contaminants in aqueous solutions and natural water by membrane introduction tandem mass spectrometry [post-print]
(Taylor & Francis Group, 2010-09-29)Membrane introduction mass spectrometry (MIMS) was used to directly monitor the loss of trace gasoline contaminants (benzene, toluene, 2-methylthiophene and methylcyclohexane) in nanomolar (ppb) aqueous solutions under a ... -
Photosensitized degradation kinetics of trace halogenated contaminants in natural waters using membrane introduction mass spectrometry as an in-situ reaction monitor [post-print]
(Royal Society of Chemistry, 2015-11)The photochemically mediated dechlorination of polyhalogenated compounds represents a potential decontamination strategy and a relevant environmental process in chemically reducing media. We report the UV irradiation of ...
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