Instrumentation for continuos on-line monitoring of non-methane organic carbon in air emissions

摘要

Nonmethane organic carbons (NMOC) is a measure of total organic carbon except that from methane. EPA standard method 25 was developed in the mid 1970's as a means of quantifying NMOC emission from stationary source such as incinerators and paint industry. This method which involves obtaining a grab sample, and transporting it to the lab for analysis is not suitable for continuous monitoring. Moreover, this GC based method is prone to interferences from moisture and high concentrations of CO_2. In this paper we discuss the development of novel columnless instrument that can be used for continuous on-line monitoring of NMOC in emission sources as well as in ambint air.