Thermally Activated Electrostatic Injection of Solvated Ions by a Track Membrane Interfaced Vacuum Feedthrough

Vladimir V. Gridin; Israel Schechter

doi:10.1021/ac9800311

Thermally Activated Electrostatic Injection of Solvated Ions by a Track Membrane Interfaced Vacuum Feedthrough

Vladimir V. Gridin, Israel Schechter^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Electromembrane ion sources are considered as potential techniques for direct mass spectrometric sampling from ambient conditions. Interfacing of a time-of-flight mass spectrometer by means of a poly(ethylene terephthalate) track membrane requires investigation of the thermally activated processes involved. In this study, we directly attempt substantiating an activation-like performance of such track membrane-mediated interfaces. A number of KCl/glycerol solution samples were tested. A wide range of fixed, externally applied, potential drops was covered. For the charge extraction processes studied, we observe and discuss an activation term, exp(-ΔF/k_BT), with a free-energy barrier ΔF = ΔF₀ - ΔF_Φ. The potential drop-dependent ΔF_Φ, was found to be sensitive to the varying salt concentration.

Original language	English
Pages (from-to)	2213-2217
Number of pages	5
Journal	Analytical Chemistry
Volume	70
Issue number	11
DOIs	https://doi.org/10.1021/ac9800311
State	Published - 1 Jun 1998
Externally published	Yes

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title = "Thermally Activated Electrostatic Injection of Solvated Ions by a Track Membrane Interfaced Vacuum Feedthrough",

abstract = "Electromembrane ion sources are considered as potential techniques for direct mass spectrometric sampling from ambient conditions. Interfacing of a time-of-flight mass spectrometer by means of a poly(ethylene terephthalate) track membrane requires investigation of the thermally activated processes involved. In this study, we directly attempt substantiating an activation-like performance of such track membrane-mediated interfaces. A number of KCl/glycerol solution samples were tested. A wide range of fixed, externally applied, potential drops was covered. For the charge extraction processes studied, we observe and discuss an activation term, exp(-ΔF/kBT), with a free-energy barrier ΔF = ΔF0 - ΔFΦ. The potential drop-dependent ΔFΦ, was found to be sensitive to the varying salt concentration.",

author = "Gridin, {Vladimir V.} and Israel Schechter",

year = "1998",

month = jun,

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doi = "10.1021/ac9800311",

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journal = "Analytical Chemistry",

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T1 - Thermally Activated Electrostatic Injection of Solvated Ions by a Track Membrane Interfaced Vacuum Feedthrough

AU - Gridin, Vladimir V.

AU - Schechter, Israel

PY - 1998/6/1

Y1 - 1998/6/1

N2 - Electromembrane ion sources are considered as potential techniques for direct mass spectrometric sampling from ambient conditions. Interfacing of a time-of-flight mass spectrometer by means of a poly(ethylene terephthalate) track membrane requires investigation of the thermally activated processes involved. In this study, we directly attempt substantiating an activation-like performance of such track membrane-mediated interfaces. A number of KCl/glycerol solution samples were tested. A wide range of fixed, externally applied, potential drops was covered. For the charge extraction processes studied, we observe and discuss an activation term, exp(-ΔF/kBT), with a free-energy barrier ΔF = ΔF0 - ΔFΦ. The potential drop-dependent ΔFΦ, was found to be sensitive to the varying salt concentration.

AB - Electromembrane ion sources are considered as potential techniques for direct mass spectrometric sampling from ambient conditions. Interfacing of a time-of-flight mass spectrometer by means of a poly(ethylene terephthalate) track membrane requires investigation of the thermally activated processes involved. In this study, we directly attempt substantiating an activation-like performance of such track membrane-mediated interfaces. A number of KCl/glycerol solution samples were tested. A wide range of fixed, externally applied, potential drops was covered. For the charge extraction processes studied, we observe and discuss an activation term, exp(-ΔF/kBT), with a free-energy barrier ΔF = ΔF0 - ΔFΦ. The potential drop-dependent ΔFΦ, was found to be sensitive to the varying salt concentration.

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M3 - 文章

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AN - SCOPUS:0141445078

SN - 0003-2700

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EP - 2217

JO - Analytical Chemistry

JF - Analytical Chemistry

IS - 11

ER -

Thermally Activated Electrostatic Injection of Solvated Ions by a Track Membrane Interfaced Vacuum Feedthrough

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