PORTABLE AIR POLLUTION DETECTOR

摘要

Method and apparatus for rapidly and accurately testing, in a laboratory or preferably a field location, a sample, preferably a gasoline sample, to determine olefins having up to a predetermined number of carbon atoms therein by first chromatographically separating the olefins having up to one more carbon atom than said predetermined number from the remainder of the olefins, secondly time separating the olefins having up to said predetermined number of carbon atoms from the chromatographically separated stream by switching off the stream after the olefins having a predetermined number of carbon atoms, but before the olefins having one more carbon atom than said predetermined number pass through a detector, and finally detecting the presence of the olefins in the time separated stream by use of a suitable means such as a bromine coulometric titrator.