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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