A new method and apparatus for on-site detection of trace levels of chemical warfare agents

Kendler, Shai; Zifman, Adi; Gratziany, Natzach; Zaltsman, Amalia; Frishman, Gad

doi:10.1016/j.aca.2005.05.059

Cited by 20 publications

(14 citation statements)

References 14 publications

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“…This cost function assumes that increasing the detectors’ DR, and decreasing their minimum detectable level, MDL, increases their price [ 19 , 20 ], and operational cost. If the network consists of a homogenous set of sensors and the installation cost is fixed for all ω ∈ Ω, Equation (4) becomes:

…”

Section: Methodsmentioning

confidence: 99%

Optimal Wireless Distributed Sensor Network Design and Ad-Hoc Deployment in a Chemical Emergency Situation

Kendler

Fishbain

2022

Sensors

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Industrial activities involve the manipulation of harmful chemicals. As there is no way to guarantee fail-safe operation, the means and response methods must be planned in advance to cope with a chemical disaster. In these situations, first responders assess the situation from the atmospheric conditions, but they have scant data on the source of the contamination, which curtails their response toolbox. Hence, a sensor deployment strategy needs to be formulated in real-time based on the meteorological conditions, sensor attributes, and resources. This work examined the tradeoff between sensor locations and their attributes. The findings show that if the sensor locations are optimal, the number is more important than quality, in that the sensors’ dynamic range is a significant factor when quantifying leaks but is less important if the goal is solely to locate the leak source/s. This methodology can be used for sensor location-allocation under real-life conditions and technological constraints.

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…”

Section: Methodsmentioning

confidence: 99%

Optimal Wireless Distributed Sensor Network Design and Ad-Hoc Deployment in a Chemical Emergency Situation

Kendler

Fishbain

2022

Sensors

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“…This device was tested for effects of the airflow rate, sample volume, and temperature on analytical performance and was found to be applicable for real time monitoring of low levels of CWAs [58].…”

Section: A Combination Of Ce/ms (As An Orthogonal Technique To Llc/ms)mentioning

confidence: 99%

Utilisation of separation methods in the analysis of chemical warfare agents

et al. 2006

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Chemical warfare agents and their degradation products represent a broad group of compounds with different chemical properties (polarity, volatility, thermostability, etc.). These chemicals often have to be detected and determined in complex matrices and therefore highly efficient separation techniques hyphenated to selective and sensitive detectors play an indispensable role. This review offers an overview of selected papers devoted to the title subject. It cannot be considered as a comprehensive literature compilation but should allow the reader to obtain an insight into the application of separation techniques in the important area of human protection and control of chemical weapons.

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“…Such absorption decreases the vapor concentration in the sampled air, resulting in lower sensitivity and longer response and clear-down time. In many cases, it may be possible to extract vapors from the filter by heating it to a sufficiently high temperature [ 20 ]. However, this process requires a significant amount of energy, maybe insufficient in some cases, and the heated air itself may affect the sensor performance.…”

Section: Introductionmentioning

confidence: 99%

The Challenges of Prolonged Gas Sensing in the Modern Urban Environment

Kendler

Zuck

2020

Sensors

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The increase in the urban population is impacting the environment in several ways, including air pollution due to emissions from automobiles and industry. The reduction of air pollution requires reliable and detailed information regarding air pollution levels. Broad deployment of sensors can provide such information that, in turn, can be used for the establishment of mitigating and regulating acts. However, a prerequisite of such a deployment strategy is using highly durable sensors. The sensors must be able to operate for long periods of time under severe conditions such as high humidity, solar radiation, and dust. In recent years, there has been an ongoing effort to ruggedize sensors for industrial applications with an emphasis on elevated temperature, humidity, and pressure. Some of these developments are adapted for urban air sensing applications. However, protection from dust is based on filters that have not been modified in the last few decades. Such filters clog over time, thus requiring frequent replacement. This editorial presents the need for a consumable-free dust removal device that provides consistent performance without affecting the sensing process. A specific solution for removing dust using a cyclone dust separator is presented. The cyclone dust separator is implemented as an add-on module to protect commercially available sensors.

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A new method and apparatus for on-site detection of trace levels of chemical warfare agents

Cited by 20 publications

References 14 publications

Optimal Wireless Distributed Sensor Network Design and Ad-Hoc Deployment in a Chemical Emergency Situation

Optimal Wireless Distributed Sensor Network Design and Ad-Hoc Deployment in a Chemical Emergency Situation

Utilisation of separation methods in the analysis of chemical warfare agents

The Challenges of Prolonged Gas Sensing in the Modern Urban Environment

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