Results 211 to 220 of about 37,190 (246)

Ambient Desorption/Ionization

2017
Ion formation under ambient conditions Interfaces for ambient desorption/ionization-mass spectrometry Screening techniques for rapid quality control and safety applications Real time examination of samples during physical ...
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Low-Temperature Plasma Probe for Ambient Desorption Ionization

Analytical Chemistry, 2008
A low-temperature plasma (LTP) probe has been developed for ambient desorption ionization. An ac electric field is used to induce a dielectric barrier discharge through use of a specially designed electrode configuration. The low-temperature plasma is extracted from the probe where it interacts directly with the sample being analyzed, desorbing and ...
Jason D, Harper, Nicholas A, Charipar, Christopher C, Mulligan, Xinrong, Zhang, R Graham, Cooks, Zheng, Ouyang   +5 more
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Easy Ambient Sonic-Spray Ionization

2014
The principles and major applications of one of the simpliest and easiest mass spectrometric techniques, that is, easy ambient sonic-spray ionization (EASI), able to effficiently desorb and ionize analytes at ambient conditions, is described. Several benefitial figures-of-merit for EASI are discussed and the EASI benefits of enhanced selectivity and S ...
Carlos H. V. Fidelis, Marcos N. Eberlin
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Detection of Cellulose-Derived Chromophores by Ambient Ionization-MS

Analytical Chemistry, 2016
The detection of individual chromophores that contribute to the overall discoloration of paper ("yellowing") is a challenge because those substances are only present in very small amounts. In this research, two analytical approaches based on ambient ionization techniques, namely, desorption electrospray ionization and paper spray, both coupled to mass ...
Andreas, Schedl, Philipp, Korntner, Thomas, Zweckmair, Ute, Henniges, Thomas, Rosenau, Antje, Potthast   +5 more
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Microplasma Discharge Ionization Source for Ambient Mass Spectrometry

Analytical Chemistry, 2009
In this paper, we demonstrate the first use of a microplasma ionization source for ambient mass spectrometry. This device is a robust, easy-to-operate microhollow discharge that enables ambient direct analysis of gaseous, liquid, and solid-phase samples with minimum requirements in terms of operating power and high purity gas consumption.
Joshua M, Symonds, Asiri S, Galhena, Facundo M, Fernández, Thomas M, Orlando   +3 more
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Ambient Ionization Mass Spectrometry

2014
Ambient ionization has emerged as one of the hottest and fastest growing topics in mass spectrometry enabling sample analysis with minimal sample preparation. Introducing the subject and explaining the basic concepts and terminology, this book will provide a comprehensive, unique treatise devoted to the subject.
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Ambient Ionization MS for Bioanalysis: Recent Developments and Challenges

Bioanalysis, 2015
Ambient ionization MS has become very popular in analytical science and has now evolved as an effective analytical tool in metabolomics, biological tissue imaging, protein and small molecule drug analysis, where biological samples are probed in a rapid and direct fashion with minimal sample preparation at ambient conditions.
John, Takyi-Williams, Chuan-Fa, Liu, Kai, Tang   +2 more
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An Introduction to Ambient Ionization Mass Spectrometry

2014
Ambient ionization/sampling mass spectrometry (or “ambient mass spectrometry” for short) is a subdiscipline of mass spectrometry that enables direct, high-throughput, surface analysis of native samples. Two flagship ambient mass spectrometry techniques: direct analysis in real time (DART) and desorption electrospray ionization (DESI) have not only ...
Monge, Maria Eugenia, Fernández, Facundo M.   +1 more
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Scanning probe electrospray ionization for ambient mass spectrometry

Rapid Communications in Mass Spectrometry, 2012
RATIONALE Ambient sampling and ionization techniques have been attracting attention in imaging mass spectrometry because they offer the advantage of rapid testing. We have developed a method which exploits the fluid motion of charged solvents for both local sampling and ionization with a single vibrating ...
Yoichi, Otsuka, Sayuri, Shide, Junpei, Naito, Masafumi, Kyogaku, Hiroyuki, Hashimoto, Ryuichi, Arakawa   +5 more
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Ambient Ionization Mass Spectrometry Measurement of Aminotransferase Activity

Journal of the American Society for Mass Spectrometry, 2017
A change in enzyme activity has been used as a clinical biomarker for diagnosis and is useful in evaluating patient prognosis. Current laboratory measurements of enzyme activity involve multi-step derivatization of the reaction products followed by quantitative analysis of these derivatives.
Xin, Yan, Xin, Li, Chengsen, Zhang, Yang, Xu, R Graham, Cooks   +4 more
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