| PEŠ, Ondřej, Pavla JUNGOVÁ, Radek VYHNÁNEK, Tomáš VACULOVIČ, Viktor KANICKÝ a Jan PREISLER. Off-Line Coupling of Capillary Electrophoresis to Substrate-Assisted Laser Desorption Inductively Coupled Plasma Mass Spectrometry. Analytical Chemistry. Washington, D.C., USA: American Chemical Society, 2008, roč. 80, č. 22, s. 8725–8732. ISSN 0003-2700. |
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@article{786573,
author = {Peš, Ondřej and Jungová, Pavla and Vyhnánek, Radek and Vaculovič, Tomáš and Kanický, Viktor and Preisler, Jan},
article_location = {Washington, D.C., USA},
article_number = {22},
keywords = {capillary electrophoresis; laser ablation; laser desorption; inductively coupled plasma; elemental speciation; off-line coupling; SALD},
language = {eng},
issn = {0003-2700},
journal = {Analytical Chemistry},
title = {Off-Line Coupling of Capillary Electrophoresis to Substrate-Assisted Laser Desorption Inductively Coupled Plasma Mass Spectrometry},
url = {http://pubs.acs.org/journals/ancham/index.html},
volume = {80},
year = {2008}
}
TY - JOUR
ID - 786573
AU - Peš, Ondřej - Jungová, Pavla - Vyhnánek, Radek - Vaculovič, Tomáš - Kanický, Viktor - Preisler, Jan
PY - 2008
TI - Off-Line Coupling of Capillary Electrophoresis to Substrate-Assisted Laser Desorption Inductively Coupled Plasma Mass Spectrometry
JF - Analytical Chemistry
VL - 80
IS - 22
SP - 8725–8732
EP - 8725–8732
PB - American Chemical Society
SN - 00032700
KW - capillary electrophoresis
KW - laser ablation
KW - laser desorption
KW - inductively coupled plasma
KW - elemental speciation
KW - off-line coupling
KW - SALD
UR - http://pubs.acs.org/journals/ancham/index.html
N2 - A novel off-line coupling of capillary electrophoresis (CE) and inductively coupled plasma mass spectrometry (ICPMS) is reported here. The coupling interface is based on the connection of a separation capillary to a deposition capillary via a liquid junction maintaining high separation efficiency and sample utilization due to the self-focusing effect and lack of pressure-induced flow in comparison with nebulizer-like interfaces. The separation is recorded in the form of droplets of CE effluent on a suitable substrate s a poly(ethylene terephthalate) glycol (PETG) sample plate placed inside a partially evacuated chamber. Substrate-assisted laser desorption (SALD) is used to vaporize the sample fractions and to enable further transfer to the ICPMS. The mechanism of SALD is examined using model samples deposited on a variety of substrates. The highest response is obtained for a PETG substrate; sample desorption due to ablation of PETG is found to outweigh direct ablation of sample. Detection limits are given for several metal elements. Finally, a rapid (2.5-min), high-resolution separation of CrIII/CrVI species injected in subpicomolar quantity is shown.
ER -
PEŠ, Ondřej, Pavla JUNGOVÁ, Radek VYHNÁNEK, Tomáš VACULOVIČ, Viktor KANICKÝ a Jan PREISLER. Off-Line Coupling of Capillary Electrophoresis to Substrate-Assisted Laser Desorption Inductively Coupled Plasma Mass Spectrometry. \textit{Analytical Chemistry}. Washington, D.C., USA: American Chemical Society, 2008, roč.~80, č.~22, s.~8725–8732. ISSN~0003-2700.
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