ABSTRACT
Methods of delivery for chemical weapons have been under development since World War I. The science and technology of dispersion and dissipation of chemical agents range from the sophistication of weapons of war to the simple for the purpose of terrorism. This chapter discusses how chemical agents are dispersed and dissipated. In addition, this chapter covers the topic of trace chemical sensors. Such sensors are available and can detect chemical vapors in the sub-parts-perbillion range or in the sub-picogram range. The capability of trace chemical sensors provides a valuable counter terrorism tool.
