title: A field portable mass spectrometer for monitoring organic vapors.
abstract: A portable mass spectrometer has been designed and built under the sponsorship of the US Army for the purpose of monitoring low concentrations of specified organics in the ambient atmosphere. The goals of the development were discrimination, sensitivity, portability, simplicity of operation, economy and convenience. These objectives were met in a system consisting of a computer operated mass spectrometer with a Llewellyn membrane separator inlet system housed in two 26 x 18 x 9 inch aluminum cases with a total weight less than 150 pounds. This system has shown the capability for field detection of hundreds of specific organic vapors at the parts per billion level in the ambient and workplace environments.
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D013058:Mass Spectrometry / Q000295:instrumentation*
chemical_list: D000393:Air Pollutants