Abstract
The determination of trace levels of formaldehyde in air via Proton-Transfer-Reaction-Mass-Spectrometry (PTR-MS) has been reported in several publications. Especially in case of breath analysis – an important field for PTR-MS measurements – relatively high formaldehyde concentrations were found. However, due to the low mass of the target compound interferences from fragment ions of larger molecules are likely. In this study breath analysis aiming at the determination of formaldehyde via PTR-MS and online-formaldehyde analysis (basing on the Hantzsch reaction) is performed. The presence of alcohols obviously increased the amount of detected m/ z 31 while no change of the online-analyzer signal occurred. Additionally, the determination of the rate constant k f of the formaldehyde ionization in the PTR-MS is performed on the basis of emission chamber tests. The results illustrate the vast complications when quantifying formaldehyde in air via PTR-MS at m/ z 31.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.