Hand-Held Portable Desorption Atmospheric Pressure Chemical Ionization Ion Source for in Situ Analysis of Nitroaromatic Explosives

Fred P. M. Jjunju; Simon Maher; Anyin Li; Sarfaraz U. Syed; Barry Smith; Ron M. A. Heeren; Stephen Taylor; R. Graham Cooks

doi:10.1021/acs.analchem.5b02684

Hand-Held Portable Desorption Atmospheric Pressure Chemical Ionization Ion Source for in Situ Analysis of Nitroaromatic Explosives

Fred P. M. Jjunju, Simon Maher, Anyin Li, Sarfaraz U. Syed, Barry Smith, Ron M. A. Heeren, Stephen Taylor^*, R. Graham Cooks

^*Corresponding author for this work

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

Abstract

A novel, lightweight (0.6 kg), solvent- and gas-cylinder-free, hand-held ion source based on desorption atmospheric pressure chemical ionization has been developed and deployed for the analysis of nitroaromatic explosives on surfaces in open air, offering portability for in-field analysis. A small, inexpensive, rechargeable lithium polymer battery was used to power the custom-designed circuitry within the device, which generates up to +/- 5 kV dc voltage to ignite a corona discharge plasma in air for up to 12 h of continuous operation, and allowing positive- and negative-ion mass spectrometry. The generated plasma is pneumatically transported to the surface to be interrogated by ambient air at a rate of 1-3.5 L/min, compressed using a small on-board diaphragm pump. The plasma source allows liquid or solid samples to be examined almost instantaneously without any sample preparation in the open environment. The advantages of low carrier gas and low power consumption (

Original language	English
Pages (from-to)	10047-10055
Journal	Analytical Chemistry
Volume	87
Issue number	19
DOIs	https://doi.org/10.1021/acs.analchem.5b02684
Publication status	Published - 6 Oct 2015

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title = "Hand-Held Portable Desorption Atmospheric Pressure Chemical Ionization Ion Source for in Situ Analysis of Nitroaromatic Explosives",

abstract = "A novel, lightweight (0.6 kg), solvent- and gas-cylinder-free, hand-held ion source based on desorption atmospheric pressure chemical ionization has been developed and deployed for the analysis of nitroaromatic explosives on surfaces in open air, offering portability for in-field analysis. A small, inexpensive, rechargeable lithium polymer battery was used to power the custom-designed circuitry within the device, which generates up to +/- 5 kV dc voltage to ignite a corona discharge plasma in air for up to 12 h of continuous operation, and allowing positive- and negative-ion mass spectrometry. The generated plasma is pneumatically transported to the surface to be interrogated by ambient air at a rate of 1-3.5 L/min, compressed using a small on-board diaphragm pump. The plasma source allows liquid or solid samples to be examined almost instantaneously without any sample preparation in the open environment. The advantages of low carrier gas and low power consumption (",

author = "Jjunju, {Fred P. M.} and Simon Maher and Anyin Li and Syed, {Sarfaraz U.} and Barry Smith and Heeren, {Ron M. A.} and Stephen Taylor and Cooks, {R. Graham}",

year = "2015",

month = oct,

day = "6",

doi = "10.1021/acs.analchem.5b02684",

language = "English",

volume = "87",

pages = "10047--10055",

journal = "Analytical Chemistry",

issn = "0003-2700",

publisher = "American Chemical Society",

number = "19",

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T1 - Hand-Held Portable Desorption Atmospheric Pressure Chemical Ionization Ion Source for in Situ Analysis of Nitroaromatic Explosives

AU - Jjunju, Fred P. M.

AU - Maher, Simon

AU - Li, Anyin

AU - Syed, Sarfaraz U.

AU - Smith, Barry

AU - Heeren, Ron M. A.

AU - Taylor, Stephen

AU - Cooks, R. Graham

PY - 2015/10/6

Y1 - 2015/10/6

N2 - A novel, lightweight (0.6 kg), solvent- and gas-cylinder-free, hand-held ion source based on desorption atmospheric pressure chemical ionization has been developed and deployed for the analysis of nitroaromatic explosives on surfaces in open air, offering portability for in-field analysis. A small, inexpensive, rechargeable lithium polymer battery was used to power the custom-designed circuitry within the device, which generates up to +/- 5 kV dc voltage to ignite a corona discharge plasma in air for up to 12 h of continuous operation, and allowing positive- and negative-ion mass spectrometry. The generated plasma is pneumatically transported to the surface to be interrogated by ambient air at a rate of 1-3.5 L/min, compressed using a small on-board diaphragm pump. The plasma source allows liquid or solid samples to be examined almost instantaneously without any sample preparation in the open environment. The advantages of low carrier gas and low power consumption (

AB - A novel, lightweight (0.6 kg), solvent- and gas-cylinder-free, hand-held ion source based on desorption atmospheric pressure chemical ionization has been developed and deployed for the analysis of nitroaromatic explosives on surfaces in open air, offering portability for in-field analysis. A small, inexpensive, rechargeable lithium polymer battery was used to power the custom-designed circuitry within the device, which generates up to +/- 5 kV dc voltage to ignite a corona discharge plasma in air for up to 12 h of continuous operation, and allowing positive- and negative-ion mass spectrometry. The generated plasma is pneumatically transported to the surface to be interrogated by ambient air at a rate of 1-3.5 L/min, compressed using a small on-board diaphragm pump. The plasma source allows liquid or solid samples to be examined almost instantaneously without any sample preparation in the open environment. The advantages of low carrier gas and low power consumption (

U2 - 10.1021/acs.analchem.5b02684

DO - 10.1021/acs.analchem.5b02684

M3 - Article

C2 - 26329926

SN - 0003-2700

VL - 87

SP - 10047

EP - 10055

JO - Analytical Chemistry

JF - Analytical Chemistry

IS - 19

ER -

Hand-Held Portable Desorption Atmospheric Pressure Chemical Ionization Ion Source for in Situ Analysis of Nitroaromatic Explosives

Abstract

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