Fr. Lauritsen et S. Gylling, ONLINE MONITORING OF BIOLOGICAL REACTIONS AT LOW PARTS-PER-TRILLION LEVELS BY MEMBRANE INLET MASS-SPECTROMETRY, Analytical chemistry, 67(8), 1995, pp. 1418-1420
A now-through membrane inlet combined with a single quadrupole mass sp
ectrometer has been used for the direct on-line monitoring of biologic
al reactions at the extremely low parts-per-trillion level. Linear sig
nals over at least 4 orders of magnitude were obtained. As an example,
on-line monitoring data from the microbial oxygenation of chloroethyl
enes in pure cultures of the methanotrophic bacteria Methylococcus cap
sulatus (Bath) are presented.