用于表征总气态非甲烷有机物（TGNMO） 甲烷 和乙烷在空气中的气态混合物的现场测试协议在用原油填充货船期间（第一版

Provides a standardized testing methdology for quantifying total gaseous nonmethane organics (TGNMO), methane, and ethane, in the the air-vapor mixture that is expelled from cargo compartments during filing with crude oil. It utilizes a modified version of Federal Reference Method 25 (FRM 25) to characterize the concentration of TGNMO, methane and ethane. While the field testing in support of this protocol was performed only for the loading of crude oil into barges, the method could be suitable for loading of any volatile organic liquid into any type of vessel or compartment from which vapors are exhausted through a single vent opening where the field sampling can take place.