Micro-Flame Photometric Detection in Miniature Gas Chromatography on a Titanium Tile

McKelvie, Kaylan H.; Thurbide, Kevin B.

doi:10.1007/s10337-019-03723-y

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…As the most probable dispersion route of SM is via aerosol or vapor (Young et al, 2020), it is desirable to explore a sensitive and on-line gas-phase detection method with rapid response, good portability, and cost competitiveness. Nevertheless, existing traditional methods, including flame photometric detector (FID), ion mobility spectrometry (IMS), and gas chromatography-mass spectrometry (GC-MS), cannot fulfil these requirements at the same time (Cordell et al, 2007;Harris et al, 2011;McKelvie and Thurbide, 2019). Recently, numerous innovative strategies have been investigated and developed, such as surface-enhanced Raman spectroscopy (Xu et al, 2021), fluorescent probe (Feng et al, 2021), quantum dot sensor (Alev et al, 2022), quartz crystal microbalance (Lee et al, 2019), and atmospheric pressure plasma optical emission spectroscopy (APP-OES) (Broekaert and Siemens, 2004;Karanassios, 2004;Niu et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Detection of sulfur mustard simulants using the microwave atmospheric pressure plasma optical emission spectroscopy method

Xu¹,

Li²,

Liu³

et al. 2023

Front. Chem.

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Sulfur mustard (SM) is one kind of highly toxic chemical warfare agent and easy to spread, while existing detection methods cannot fulfill the requirement of rapid response, good portability, and cost competitiveness at the same time. In this work, the microwave atmospheric pressure plasma optical emission spectroscopy (MW-APP-OES) method, taking the advantage of non-thermal equilibrium, high reactivity, and high purity of MW plasma, is developed to detect three kinds of SM simulants, i.e., 2-chloroethyl ethyl sulfide, dipropyl disulfide, and ethanethiol. Characteristic OES from both atom lines (C I and Cl I) and radical bands (CS, CH, and C2) is identified, confirming MW-APP-OES can preserve more information about target agents without full atomization. Gas flow rate and MW power are optimized to achieve the best analytical results. Good linearity is obtained from the calibration curve for the CS band (linear coefficients R2 > 0.995) over a wide range of concentrations, and a limit of detection down to sub-ppm is achieved with response time on the order of second. With SM simulants as examples, the analytical results in this work indicate that MW-APP-OES is a promising method for real-time and in-site detection of chemical warfare agents.

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Section: Introductionmentioning

confidence: 99%

Detection of sulfur mustard simulants using the microwave atmospheric pressure plasma optical emission spectroscopy method

Xu¹,

Li²,

Liu³

et al. 2023

Front. Chem.

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“…Common methods for detecting nerve agents include resistive gas sensors [ 2 , 3 ], metal oxide gas sensors [ 4 ], surface acoustic wave (SAW) gas sensors [ 5 ], infrared gas sensors [ 6 ], ion mobility spectrometry [ 7 ], gas phase mass spectrometry [ 8 ], etc. While metal oxide gas sensors offer high sensitivity, low cost, and compact size, they exhibit poor selectivity.…”

Section: Introductionmentioning

confidence: 99%

A Nanoporous Polymer Modified with Hexafluoroisopropanol to Detect Dimethyl Methylphosphonate

Wang,

Li,

et al. 2023

Nanomaterials

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The increasing threat of nerve agents has prompted the need for gas sensors with fast response, high sensitivity, and good stability. In this work, the hexafluoroisopropanol functional group was modified on a porous aromatic framework material, which served as a sensitive material for detecting dimethyl methylphosphonate. A nerve agent sensor was made by coating sensitive materials on a surface acoustic wave device. Lots of pores in sensitive materials effectively increase the specific surface area and provide channels for diffusion of gas molecules. The introduction of hexafluoroisopropanols enables the sensor to specifically adsorb dimethyl methylphosphonate and improves the selectivity of the sensor. As a result, the developed gas sensor was able to detect dimethyl methylphosphonate at 0.8 ppm with response/recovery times of 29.8/43.8 s, and the detection limit of the gas sensor is about 0.11 ppm. The effects of temperature and humidity on the sensor were studied. The results show that the baseline of the sensor has a linear relationship with temperature and humidity, and the temperature and humidity have a significant effect on the response of the sensor. Furthermore, a device for real-time detection of nerve agent is reported. This work provides a new strategy for developing a gas sensor for detecting nerve agents.

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Miniaturized systems for gas chromatography: Developments in sample preparation and instrumentation

Crucello

Oliveira

Sampaio

et al. 2022

Journal of Chromatography A

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Micro-Flame Photometric Detection in Miniature Gas Chromatography on a Titanium Tile

Cited by 5 publications

References 34 publications

Detection of sulfur mustard simulants using the microwave atmospheric pressure plasma optical emission spectroscopy method

Detection of sulfur mustard simulants using the microwave atmospheric pressure plasma optical emission spectroscopy method

A Nanoporous Polymer Modified with Hexafluoroisopropanol to Detect Dimethyl Methylphosphonate

Miniaturized systems for gas chromatography: Developments in sample preparation and instrumentation

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