Aldehydes gas ozonation monitoring: Interest of SIFT/MS versus GC/FID

Abstract

Ozone interferes on aldehyde analysis by GC/FID with silicone-based column. Aldehyde-ozone reaction in GC system could lead to a process misinterpretation. SIFT/MS is a reliable technique to monitor VOCs in presence of ozone.

Emissions of Volatile Organic Compounds (VOCs) as Safety Indicators in the Development of Wood-Based Binderless Boards

“…For off-line techniques, a sample is taken from the matrix, the compounds are stored in/on their collection media, and then they are usually analyzed by gas or liquid chromatography technics coupled with mass spectrometry or flame ionisation and UV detection, respectively. On-line analysis techniques can also be used, in particular PTR-MS and SIFT-MS [102][103][104].…”

Chemical ionization of carboxylic acids and esters in negative mode selected ion flow tube – Mass spectrometry (SIFT-MS)

“…Data sparsely appear in the literature to gradually build a database on negative ionization gas phase chemistry. Data on aldehydes are now available [25][26][27], as well as on alcohols [6,7], ketones [26,28], fumigants, acid gases [29], ozone [30,31] and carbon dioxide [29,32].…”

Ozone Quantification by Selected Ion Flow Tube Mass Spectrometry: Influence of Humidity and Manufacturing Gas of Ozone Generator

“…Particularly in an industrial context, SIFT-MS has emerged as an interesting technique because it is able to analyze in real-time a wide variety of compounds at trace levels in gas phase through an ionization reaction with H 3 O + , NO + , and O 2 + . − In recent years, five negative ions (NO 2 – , NO 3 – , O 2 – , HO – , and O – ) have been integrated to the range of precursor ions available for analysis of samples, broadening the list of compounds analyzed by SIFT-MSadding among them ozone, which can only react with negative precursor ions because its proton affinity is smaller than water (625.5 vs 691 kJ mol –1 ) . The quantification of neutral compounds by SIFT-MS is based on soft ionization reaction with precursor ions, carried out in a region with fixed conditions (temperature, pressure, and reaction time). , According to Williams et al, ozone reacts with four negative precursor ions available in the SIFT-MS device (NO 2 – , O 2 – , HO – , and O – ), being only unreactive to NO 3 – .…”