Determination of Room Vapor Concentration from Liquid Chemical Agent Spill UsingGW-BASIC

摘要

The IBM Personal Computer GW-BASIC Program is employed to determine the agentvapor concentration-time profile following the release of specific chemical agents (GB, GD, HD, VX) associated with an agent liquid spill in a ventilated, enclosed room. It may be used to determine the level of respiratory protection required or to predict Maximum Creditable Episodes (MCEs). A linear first-order differential equation is derived for determining the airborne agent concentrations over time resulting from the spill. Sample problems are presented using both neat agent and dilute agent liquid solutions. Comparisons are shown between the calculated agent concentrations and the agent 8-hour airborne exposure limits; from this, the level of respiratory protection can be chosen. (jes)