Hazardous Gas Detection for Homeland Security

Simultaneous, continuous, real time, measurement, monitoring, and control of gas mixtures are ubiquitous requirements in science and engineering and more recently in safety and homeland security applications. Property-based gas analysis for ternary gas mixtures first saw applications in the 1990s. Since then, numerous applications are ternary, such as oxygen, nitrogen, and carbon dioxide. Drzewiecki asserts that a low-cost, property-based, universal gas sensor-analyzer system can be the basis for a threat detection and identification system that could meet government and industrial goals of both low-cost acquisition and operation and high performance by responding to concentration levels of gas species designated to present hazardous toxic doses to human potential that cause acute immediate danger to life and health and exceed permissible exposure limits.