Výsledky vyhledávání - "Yoseif Makonnen"

The inductively coupled plasma as a source for optical emission spectrometry and mass spectrometry

Autor: Diane Beauchemin, Yoseif Makonnen

The argon inductively coupled plasma (ICP) is a useful atom and ion emissions source for optical emission spectrometry (OES) and ion source for mass spectrometry (MS). This chapter will provide a general overview of ICP spectrometry: plasma generatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6099c645ff1e81ab7fcff8fd1d319438
https://doi.org/10.1016/b978-0-444-59482-2.00001-4

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Nebulization systems

Autor: John A. Burgener, Yoseif Makonnen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::442a489f7eb3e091e2dfd53a1adc8121
https://doi.org/10.1016/b978-0-444-59482-2.00002-6

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Solid sampling analysis of a Mg alloy using electrothermal vaporization inductively coupled plasma optical emission spectrometry

Autor: Guilherme Luiz Scheffler, Diane Beauchemin, Yoseif Makonnen, Dirce Pozebon

Publikováno v: Journal of Analytical Atomic Spectrometry. 32:2041-2045

Electrothermal vaporization hyphenated with inductively coupled plasma optical emission spectrometry (ETV-ICPOES) was applied to the analysis of the AZ31 Mg alloy in an attempt to quantify Al, Cu, Mn, Ni and Zn. Small pieces of the alloy were simply

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::755d14487cbdb3885f3fd6ba6cb106e6
https://doi.org/10.1039/c7ja00203c

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Towards the reduction of matrix effects in inductively coupled plasma optical emission spectrometry: an argon–nitrogen–hydrogen mixed-gas plasma for the analysis of geological and environmental samples

Autor: Diane Beauchemin, Majdi L. Geagea, Yoseif Makonnen, William R. MacFarlane

Publikováno v: Journal of Analytical Atomic Spectrometry. 32:1688-1696

An argon–nitrogen–hydrogen mixed-gas plasma was optimized towards the minimization of matrix effects in inductively coupled plasma optical emission spectrometry. Analyte sensitivity was enhanced by a factor of 1 to 4 (n = 26 elements) upon adding

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ce9d5eab027fc2687255e090cfd2f8e0
https://doi.org/10.1039/c7ja00112f

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Investigation of a measure of robustness in inductively coupled plasma mass spectrometry

Autor: Diane Beauchemin, Yoseif Makonnen

Publikováno v: Spectrochimica Acta Part B: Atomic Spectroscopy. :57-62

In industrial/commercial settings where operators often have minimal expertise in inductively coupled plasma (ICP) mass spectrometry (MS), there is a prevalent need for a response factor indicating robust plasma conditions, which is analogous to the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e0396a7f51bfe819bad24af9284a12b
https://doi.org/10.1016/j.sab.2014.11.010

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Improvement of analytical performance in inductively coupled plasma optical emission spectrometry without compromising robustness using an infrared-heated sample introduction system with a pneumatic nebulizer

Autor: John Burgener, Yoseif Makonnen, Diane Beauchemin

Publikováno v: Journal of Analytical Atomic Spectrometry. 30:214-224

A simple enhanced sample introduction system, using pneumatic nebulization (PN), was developed for inductively coupled plasma optical emission spectrometry (ICP OES). The aerosol generated by a Burgener parallel-flow nebulizer, coupled to a single-pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0d39a69211b5c716d112e0a65dba71e5
https://doi.org/10.1039/c4ja00258j

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Electrocatalysts: Ordered Porous Electrodes by Design: Toward Enhancing the Effective Utilization of Platinum in Electrocatalysis (Adv. Funct. Mater. 36/2017)

Autor: Gregory Jerkiewicz, Julia van Drunen, Yoseif Makonnen, Diane Beauchemin, Brandy K. Pilapil, Byron D. Gates

Publikováno v: Advanced Functional Materials. 27

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d941f4f408df9747668848ff88f71da
https://doi.org/10.1002/adfm.201770214

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Ordered Porous Electrodes by Design: Towards Enhancing the Effective Utilization of Platinum in Electrocatalysis

Autor: Julia van Drunen, Gregory Jerkiewicz, Byron D. Gates, Diane Beauchemin, Yoseif Makonnen, Brandy K. Pilapil

Platinum-nanoparticle-functionalized, ordered, porous support electrodes are prepared and characterized as a potential new class of oxygen reduction reaction (ORR) electrocatalysts. This study aims to develop electrode materials that enhance the effe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f309ab655a932cd99a728af5e7b637f
http://summit.sfu.ca/item/19506

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An argon–nitrogen–hydrogen mixed-gas plasma as a robust ionization source for inductively coupled plasma mass spectrometry

Autor: Diane Beauchemin, Yoseif Makonnen

Publikováno v: Spectrochimica Acta Part B: Atomic Spectroscopy. 99:87-93

Multivariate optimization of an argon–nitrogen–hydrogen mixed-gas plasma for minimum matrix effects, while maintaining analyte sensitivity as much as possible, was carried out in inductively coupled plasma mass spectrometry. In the presence of 0.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ed60c99142c64df87ab191f355e17f8d
https://doi.org/10.1016/j.sab.2014.06.015

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