Detection of organophosphorus compounds using a surface acoustic wave array sensor based on supramolecular self-assembling imprinted films

2020 ◽  
Vol 12 (17) ◽  
pp. 2206-2214 ◽  
Author(s):  
Yong Pan ◽  
Tengxiao Guo ◽  
Genwei Zhang ◽  
Junchao Yang ◽  
Liu Yang ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Tributyl Phosphate ◽  
Organophosphorus Compounds ◽  
Chemical Warfare Agent ◽  
Chemical Warfare ◽  
Dimethyl Methylphosphonate ◽  
Array Sensor ◽  
Self Assembling

In this study, diisopropyl methylphosphonate (DIMP), tributyl phosphate (TBP), and dimethyl methylphosphonate (DMMP) were selected as organophosphorus chemical warfare agent (CWA) simulants.

Graphene oxide as sensitive layer in Love-wave surface acoustic wave sensors for the detection of chemical warfare agent simulants

Talanta ◽  
2016 ◽  
Vol 148 ◽  
pp. 393-400 ◽  
Author(s):  
Isabel Sayago ◽  
Daniel Matatagui ◽  
María Jesús Fernández ◽  
José Luis Fontecha ◽  
Izabela Jurewicz ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Love Wave ◽  
Chemical Warfare Agent ◽  
Chemical Warfare ◽  
Wave Surface ◽  
Sensitive Layer ◽  
Acoustic Wave Sensors ◽  
Wave Sensors

Improved Performance of Surface Acoustic Wave Sensors by Plasma Treatments for Chemical Warfare Agents Monitoring

2020 ◽  
Vol 20 (11) ◽  
pp. 7145-7150 ◽  
Author(s):  
Eunhyun Kim ◽  
Jinuk Kim ◽  
Seonggyun Ha ◽  
Changsik Song ◽  
Joo-Hyung Kim
Keyword(s):  
Acoustic Wave ◽  
Plasma Treatment ◽  
Surface Acoustic Wave ◽  
Chemical Warfare Agents ◽  
Chemical Warfare ◽  
Saw Sensor ◽  
Warfare Agents ◽  
Improved Performance ◽  
Lift Off ◽  
Sensing Performance

The effects of a plasma treatment on the sensing performance of surface acoustic wave (SAW) sensors to detect chemical warfare agents (CWAs) were investigated. SAW sensors designed for an operating frequency of 250 MHz were fabricated using lift-off techniques followed by the deposition of a very thin thiourea (TU) layer as a sensing film on the sensing area of the SAW sensor. To achieve some advantages from the plasma treatment on the surface, such as cleaning, surface activation and modification, a post-plasma treatment was performed on the sensing layer and the sensing performance of the SAW sensor was measured by a comparison with the measured responses, providing different simulant gases through the gas feeding system. The sensitivity test revealed significant improvement in the sensing ability of the SAW sensor to detect DMMP, a simulant of a CWA, but with a relatively longer recovery time. The responses of other simulants at different concentrations and different simulant vapors were compared. The results showed that a plasma treatment on the sensing layer of a SAW device can improve the selectivity and sensitivity to a certain target gas or some volatile organic compounds. Therefore, a plasma treatment will be very useful for improving the selectivity and sensitivity of SAW sensors for the detection of CWAs.

scholarly journals Vapor Selectivity of a Natural Photonic Crystal to Binary and Tertiary Mixtures Containing Chemical Warfare Agent Simulants

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 157 ◽  
Author(s):  
Joshua Kittle ◽  
Benjamin Fisher ◽  
Courtney Kunselman ◽  
Aimee Morey ◽  
Andrea Abel
Keyword(s):  
Photonic Crystals ◽  
Chemical Warfare Agent ◽  
Nerve Agent ◽  
Chemical Warfare ◽  
Mustard Gas ◽  
Dimethyl Methylphosphonate ◽  
Vapor Sensing ◽  
Sensitivity Level ◽  
Vapor Mixtures ◽  
Wing Scales

Vapor sensing via light reflected from photonic crystals has been increasingly studied as a means to rapidly identify analytes, though few studies have characterized vapor mixtures or chemical warfare agent simulants via this technique. In this work, light reflected from the natural photonic crystals found within the wing scales of the Morpho didius butterfly was analyzed after exposure to binary and tertiary mixtures containing dimethyl methylphosphonate, a nerve agent simulant, and dichloropentane, a mustard gas simulant. Distinguishable spectra were generated with concentrations tested as low as 30 ppm and 60 ppm for dimethyl methylphosphonate and dichloropentane, respectively. Individual vapors, as well as mixtures, yielded unique responses over a range of concentrations, though the response of binary and tertiary mixtures was not always found to be additive. Thus, while selective and sensitive to vapor mixtures containing chemical warfare agent simulants, this technique presents challenges to identifying these simulants at a sensitivity level appropriate for their toxicity.

scholarly journals Supramolecular gels for the remediation of reactive organophosphorus compounds

RSC Advances ◽  
2014 ◽  
Vol 4 (85) ◽  
pp. 45517-45521 ◽  
Author(s):  
Jennifer R. Hiscock ◽  
Isabelle L. Kirby ◽  
Julie Herniman ◽  
G. John Langley ◽  
Alistair J. Clark ◽  
...  
Keyword(s):  
Organophosphorus Compounds ◽  
Chemical Warfare Agent ◽  
Chemical Warfare ◽  
Supramolecular Gels

Pyridine-based gels formed with a cyclohexyl diamide gelator have been shown to undergo a gel–sol transition upon addition of the organophosphorus (OP) chemical warfare agent (CWA) simulant diethyl chlorophosphate (DCP).

A surface acoustic wave gas sensor: detection of organophosphorus compounds

1995 ◽  
Vol 24 (1-3) ◽  
pp. 58-61 ◽  
Author(s):  
Corinne Déjous ◽  
Dominique Rebière ◽  
Jacques Pistré ◽  
Colette Tiret ◽  
Roger Planade
Keyword(s):  
Acoustic Wave ◽  
Gas Sensor ◽  
Surface Acoustic Wave ◽  
Organophosphorus Compounds ◽  
Sensor Detection

Adsorption and decomposition of dimethyl methylphosphonate on size-selected (MoO3)3 clusters

2018 ◽  
Vol 20 (7) ◽  
pp. 4840-4850 ◽  
Author(s):  
Xin Tang ◽  
Zachary Hicks ◽  
Linjie Wang ◽  
Gerd Ganteför ◽  
Kit H. Bowen ◽  
...  
Keyword(s):  
Molybdenum Oxide ◽  
Chemical Warfare Agent ◽  
Chemical Warfare ◽  
Dimethyl Methylphosphonate

The adsorption and decomposition of dimethyl methylphosphonate (DMMP), a chemical warfare agent (CWA) simulant, on size-selected molybdenum oxide trimer clusters, i.e. (MoO3)3, was studied both experimentally and theoretically.

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