Novel Supported Nanostructured Sensors for Chemical Warfare Agents (CWAs) Detection

García-Briones, Gabriela S.; Olvera‐Sosa, Miguel; Palestino, Gabriela

doi:10.1007/978-94-024-1620-6_11

Cited by 3 publications

(2 citation statements)

References 65 publications

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“…Перевагами таких матеріалів є достатньо прості методи синтезу і формування, а також їх здатність детектувати ОР з надзвичайно низькою межею виявлення від одиниць ppm і навіть нижче в ppb-ppt діапазоні [3][4][5][6][7][8]. Серед цих матеріалів ЕПП займають важливе місце завдяки унікальному поєднанню фізикохімічних властивостей, таких як ефективне електронне π-сполучення, напівпровідникові або металеві властивості, простота отримання та використання, хімічна стабільність, синтетична універсальність і висока чутливість при кімнатній температурі до ЛОС і, зокрема, до ОР [3,[6][7][8][17][18][19][20][21][22][23].…”

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“…Сенсорні елементи на основі ЕПП та їх нанокомпозитів обернено реагують на газові аналіти зміною їх електропровідності (опору) за рахунок фізико-хімічної адсорбції молекул аналізованих речовин [3,[6][7][8]. Такі сенсори відрізняються низьким енергоспоживанням та можуть працювати з простим вимірювальним обладнанням.…”

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Sensory Properties of Nanocomposites of Electroconducting Polymers Towards Toxic and Explosive Volatile Compounds

Mamykin¹,

Kukla²,

Pavluchenko³

et al. 2022

SEMST

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This work is devoted to the study of sensory properties of nanocomposites of electrically conductive polymers towards a number of phosphorus and organochlorine volatile compounds that are simulators of toxic gaseous substances, as well as nitroaromatic simulators of explosive organic substances. Gas sensitivity measurements were performed using an array of chemoresistive sensor microelectrodes covered with thin layers of these nanocomposites. The relative responses was at the level of 4–5%, the detection threshold depending on the type of analyzed toxic substances was from 10 to 100 ppm, the response rate was about 1 minute. The possibility of qualitative identification of toxic and explosive substances in a wide range of concentrations using the methods of statistical analysis of data from the sensory array has been demonstrated.

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Sensory Properties of Nanocomposites of Electroconducting Polymers Towards Toxic and Explosive Volatile Compounds

Mamykin¹,

Kukla²,

Pavluchenko³

et al. 2022

SEMST

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“Electronic nose”-type chemosensory systems for detection of gaseous poisonous substances

Мамыкин¹,

Кукла²,

Pavluchenko³

et al. 2022

SPQEO

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The work is devoted to a study of the detection sensitivity and selectivity of a series of simulants of gaseous poisonous substances (PS). Two different sensor types were used, namely: 1) a quartz crystal microbalance (QCM), exhibiting a shift of the resonant frequency of quartz plates coated with calixarene thin layers, and 2) chemoresistive electrodes coated with layers of nanocomposites of intrinsically conducting polymers (ICP) changing their conductance under the influence of adsorbed gas molecules. The concentration of the analyzed volatile compounds varied within the range of 10 to 1000 ppm. The detection threshold ranged from 10 to 100 ppm depending on the analyzed substance for both transducer types. The response time was from 10 to 20 s for the QCM sensors and up to 1 minute for the ICP based sensors. The possibility of qualitative identification of poisonous substances in a wide concentration range by means of statistical analysis of the sensor array data is demonstrated.

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Detection of the explosive nitroaromatic compound simulants with chemosensory systems based on quartz crystal microbalance and chemiresistive sensor arrays

Kazantseva,

Koshets,

Mamykin

et al. 2023

SPQEO

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The work is devoted to investigations of possibility of rapid detection and subsequent identification of explosive substances by using the arrays of two types of sensor elements: quartz crystal microbalances and chemiresistive electrodes. Thin layers of calixarene compounds and composites of electrically conductive polymers, respectively, were used as the sensitive coatings. Several types of nitroaromatic compounds from nitrotoluene series were chosen as simulants of explosive substances: O-Nitrotoluene (2-MNT) and Nitrobenzene (MNB), the concentration of these volatile compounds varied from 10 to 100 ppm. The observed detection threshold, depending on the type of analyzed explosive simulants, was within the range of 1 to 10 ppm for quartz crystal sensors with calixarene sensitive films, and the response time was within 10…20 s for quartz crystal sensors and up to 1 min for chemiresistive sensors. It has been shown that among the tested calixarenes there are samples with high selective sensitivity. The possibility of qualitative identification of explosives at relatively low concentrations by using the statistical methods of chemical patterns recognition (the so-called “electronic nose”) has been demonstrated.

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Novel Supported Nanostructured Sensors for Chemical Warfare Agents (CWAs) Detection

Cited by 3 publications

References 65 publications

Sensory Properties of Nanocomposites of Electroconducting Polymers Towards Toxic and Explosive Volatile Compounds

Sensory Properties of Nanocomposites of Electroconducting Polymers Towards Toxic and Explosive Volatile Compounds

“Electronic nose”-type chemosensory systems for detection of gaseous poisonous substances

Detection of the explosive nitroaromatic compound simulants with chemosensory systems based on quartz crystal microbalance and chemiresistive sensor arrays

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