A new method for measuring vapor emissions

摘要

A new approach for measuring point-source emissions of volatile organic compounds, acidic vapors, and other species is presented. The basic principle is that the amount emitted is determined directly, by mass, and is cumulative rather than intermittent. As a result, wide fluctuations of concentration and erratic flow behavior are accommodated without affecting the accuracy of the measured emission rate. The vapors are retained by a sorbent, such as activated carbon, ion exchange resin, or zeolite, or a combination of those.