Avijit Sen - Towards the development of a portable device for the monitoring of gaseous toxic industrial chemicals based on a chemical sensor array

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  Publication Details (including relevant citation   information):

        Author(s):         Kim P (Kim, Patrick)1,                 Albarella JD (Albarella, Jeffrey D.)1,                 Carey JR (Carey, James R.)1,                 Placek MJ (Placek, Matthew J.)1,                 Sen A (Sen, Avijit)1,                 Wittrig AE (Wittrig, Aaron E.)1,                 McNamara WB (McNamara, William B., III)1     
        Source: SENSORS AND ACTUATORS B-CHEMICAL            Volume: 134    Issue: 1            Pages: 307-312    Published: 2008       


  The ability of chemical sensor array (CSA) technology to identify   multiple gaseous analytes and differentiate between various   analyte concentrations has been documented. To date, CSA response   was monitored using a flatbed scanner driven by a personal   computer. While this system is suitable for use in a laboratory   setting it is not suitable for use in the field for environmental   monitoring. We describe herein progress made towards the   development of a rapid, inexpensive, portable, battery-operated,   handheld device based on CSA technology for the detection of   toxic industrial compounds (TICs). This prototype successfully   differentiates between four TICs at both permissible exposure   limit (PEL) and immediately dangerous to life and health (IDLH)   concentrations, and three interferent gases, in less than 2 min.

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