Ontology highlight
ABSTRACT:
SUBMITTER: Lewicki R
PROVIDER: S-EPMC2722329 | biostudies-literature | 2009 Aug
REPOSITORIES: biostudies-literature
Proceedings of the National Academy of Sciences of the United States of America 20090722 31
A transportable prototype Faraday rotation spectroscopic system based on a tunable external cavity quantum cascade laser has been developed for ultrasensitive detection of nitric oxide (NO). A broadly tunable laser source allows targeting the optimum Q(3/2)(3/2) molecular transition at 1875.81 cm(-1) of the NO fundamental band. For an active optical path of 44 cm and 1-s lock-in time constant minimum NO detection limits (1sigma) of 4.3 parts per billion by volume (ppbv) and 0.38 ppbv are obtaine ...[more]