Characterization of direct-current atmospheric-pressure discharges useful for ambient desorption/ionization mass spectrometry

JT Shelley, JS Wiley, GCY Chan… - Journal of the …, 2011 - ACS Publications
Two relatively new ambient ionization sources, direct analysis in real time (DART) and the
flowing atmospheric-pressure afterglow (FAPA), use direct current, atmospheric-pressure …

Understanding the flowing atmospheric-pressure afterglow (FAPA) ambient ionization source through optical means

JT Shelley, GCY Chan, GM Hieftje - Journal of the American …, 2011 - ACS Publications
The advent of ambient desorption/ionization mass spectrometry (ADI-MS) has led to the
development of a large number of atmospheric-pressure ionization sources. The largest …

Ultrasensitive ambient mass spectrometric analysis with a pin-to-capillary flowing atmospheric-pressure afterglow source

JT Shelley, JS Wiley, GM Hieftje - Analytical chemistry, 2011 - ACS Publications
The advent of ambient desorption/ionization mass spectrometry has resulted in a strong
interest in ionization sources that are capable of direct analyte sampling and ionization. One …

Humidity effects on fragmentation in plasma-based ambient ionization sources

GA Newsome, LK Ackerman… - Journal of The American …, 2015 - ACS Publications
Post-plasma ambient desorption/ionization (ADI) sources are fundamentally dependent on
surrounding water vapor to produce protonated analyte ions. There are two reports of …

Detection of positive and negative ions from a flowing atmospheric pressure afterglow using a Mattauch-Herzog mass spectrograph equipped with a Faraday-strip …

GD Schilling, JT Shelley, JH Barnes… - Journal of the …, 2011 - ACS Publications
An ambient desorption/ionization (ADI) source, known as the flowing atmospheric pressure
afterglow (FAPA), has been coupled to a Mattauch-Herzog mass spectrograph (MHMS) …

Atmospheric-pressure solution-cathode glow discharge: A versatile ion source for atomic and molecular mass spectrometry

AJ Schwartz, KL Williams, GM Hieftje, JT Shelley - Analytica chimica acta, 2017 - Elsevier
An atmospheric-pressure solution-cathode glow discharge (SCGD) has been evaluated as
an ion source for atomic, molecular, and ambient desorption/ionization mass spectrometry …

Ambient desorption/ionization mass spectrometry using a liquid sampling–atmospheric glow discharge (LS-APGD) ionization source

RK Marcus, CQ Burdette, BT Manard… - Analytical and …, 2013 - Springer
A novel approach to ambient desorption/ionization mass spectrometry (ADI-MS) is
described, based on a recently developed liquid sampling–atmospheric pressure glow …

Halo-shaped flowing atmospheric pressure afterglow: a heavenly design for simplified sample introduction and improved ionization in ambient mass spectrometry

KP Pfeuffer, JN Schaper, JT Shelley, SJ Ray… - Analytical …, 2013 - ACS Publications
The flowing atmospheric-pressure afterglow (FAPA) is a promising new source for
atmospheric-pressure, ambient desorption/ionization mass spectrometry. However …

Discussion of fundamental processes in dielectric barrier discharges used for soft ionization

V Horvatic, C Vadla, J Franzke - Spectrochimica Acta Part B: Atomic …, 2014 - Elsevier
Permanent need for simple to apply and efficient methods for molecular mass spectrometry
resulted in the development of a variety of methods now commonly termed ambient …

Spectroscopic plasma diagnostics on a low-temperature plasma probe for ambient mass spectrometry

GCY Chan, JT Shelley, AU Jackson, JS Wiley… - Journal of Analytical …, 2011 - pubs.rsc.org
Since the inception of ambient desorption/ionization mass spectrometry, plasma ionization
sources have played an increasing role in molecular mass spectrometry. Although a variety …