Abstract
This paper is a report of an investigation establishing the sensitivity of gas chromatography and infrared techniques for the chlorinated aliphatic hydrocarbons listed in the booklet “Threshold Limit Values for 1963.” The gas chromatographic measurements include those made with the following detection methods: thermal conductivity, flame ionization, argon ionization, and electron capture. The infrared work was done with the aid of scale expansion techniques and multipass cells up to 40 meters in length. The analytical technique used and the sensitivities attained in the analysis of air and exhaled breath are presented.