title: Simultaneous multi-instrumental monitoring of vapors in sewer headspaces by several direct-reading instruments.
abstract: Simultaneous monitoring of the vapors in several sewer headspaces by three direct-reading instruments, the Century OVA flame ionization detector, a 10.2 eV H-Nu Photoionization Detector, and a Hydrogen Sulfide Ecolyzer revealed that the majority of condensable organic vapors in areas of the Metropolitan Sewer District of Cincinnati appeared to be saturated aliphatic organics, except during short, unpredictable episodes. The monitoring was performed in the wet well of a sewage treatment plant, in sewers near two chemical plants, and in three other different sewers. The approach outlined in this paper does not require the use of gas chromatography-mass spectrometry (GC-MS) analysis.
mesh_terms: D004784:Environmental Monitoring / Q000295:instrumentation*; D008401:Gas Chromatography-Mass Spectrometry; D005740:Gases / Q000032:analysis*; D012722:Sewage / Q000032:analysis*
chemical_list: D005740:Gases; D012722:Sewage