A versatile and compact reference gas generator for calibration of ion mobility spectrometers

Mayer, Thomas; Cämmerer, Malcolm; Borsdorf, Helko

doi:10.1007/s12127-019-00252-0

Cited by 1 publication

(1 citation statement)

References 14 publications

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“…Therefore, we investigated the recovery of terpenes after the preconcentration with and without the O 3 scrubber. The liquid samples of target compounds were evaporated in a gas stream via permeation using a reference gas generator [28]. The generated sample gas flow was guided through the bio-monitoring tubes under the same conditions as used during the sampling in the field (preconcentration of 19.2 L sample gas stream with 80 mL min −1 for 4 h).…”

Section: Effectiveness Of the Ozone Scrubbermentioning

confidence: 99%

Comparison of Seasonal and Diurnal Concentration Profiles of BVOCs in Coniferous and Deciduous Forests

Borsdorf,

Bentele,

Müller

et al. 2023

Atmosphere

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Ambient atmospheric concentrations of isoprene and monoterpenes were measured at two forest sites, one deciduous and one coniferous, over the year 2022. Both sites in a regional area were sampled monthly between April and September. The samples were taken using sorbent tubes and analyzed with thermal desorption–gas chromatography–mass spectrometry. The highest concentrations were determined in August at both sites. While isoprene is the most abundant compound at the deciduous forest with an average concentration of 5.59 µg m−3 in August, α-pinene and β-pinene dominate throughout the year at the coniferous forest with the highest concentrations also in August (3.44 µg m−3 and 1.51 µg m−3). Because other monoterpenes (camphene, sabinene, 3-carene, p-cymene and limonene) are also emitted in significant amounts, the total concentration measured in the coniferous forest is higher (7.96 µg m−3 in August) in comparison to the deciduous forest (6.08 µg m−3). Regarding the detected monoterpenes in the deciduous forest, sabinene is the dominant monoterpene in addition to α-pinene and is sometimes present in higher (July) or equal (August) concentrations. The seasonal and diurnal concentrations of all monoterpenes correlate very well with each other at both sites. An exception is sabinene with a diurnal concentration profile similar to isoprene.

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Section: Effectiveness Of the Ozone Scrubbermentioning

confidence: 99%