Determination of recovery rates of adsorbents for sampling very volatile organic compounds (C1C6) in dry and humid air in the sub-ppb range by use of thermal desorption gas chromatography-mass spectrometry

Richter, Matthias; Juritsch, Elevtheria; Jann, Oliver

doi:10.1016/j.chroma.2020.461389

Cited by 15 publications

(10 citation statements)

References 19 publications

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“…Due to its hydrophobicty, no water management is needed for Carbograph 5TD. 5 The great performance of Carbograph 5TD 40/60 was also observed by Richter et al in 2020, where 27 out of 34 substances had recoveries above 70% at a relative humidity of the sampling air of 50%. 6 Several studies that compared adsorbents directly with one another also found Carbograph 5TD to be the most appropriate single adsorbent for VVOCs.…”

Section: Introductionmentioning

confidence: 69%

“…For the determination of the recovery of the 60 analytes, the results of the direct injection of the gas mixture were compared to those of the thermal desorption of the spiked tubes, like in previous studies, 5,6 following eqn (1):where A stands for signal area, ISTD for the internal standard, TD for thermal desorption, and N is the number of direct injection analyses carried out.…”

Section: Methodsmentioning

confidence: 99%

“…2.2.1 Recovery. For the determination of the recovery of the 60 analytes, the results of the direct injection of the gas mixture were compared to those of the thermal desorption of the spiked tubes, like in previous studies, 5,6 following eqn (1):…”

Section: Validationmentioning

confidence: 99%

“…5 The great performance of Carbograph 5TD 40/60 was also observed by Richter et al in 2020, where 27 out of 34 substances had recoveries above 70% at a relative humidity of the sampling air of 50%. 6…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

On the use of Carbograph 5TD as an adsorbent for sampling VVOCs: validation of an analytical method

2023

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Section: Introductionmentioning

confidence: 69%

Section: Methodsmentioning

confidence: 99%

Section: Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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On the use of Carbograph 5TD as an adsorbent for sampling VVOCs: validation of an analytical method

2023

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“…It is also used together with Tenax TA ® as hydrophobic combination for solid sorbent sampling. 90 Richter et al 91 Carbosieve SIII and Carboxen 569, they proposed several steps to reduce a water uptake during sampling. However, the Carbotrap types (20/40 mesh), which are comparable to Carbograph 5TD, showed no water uptake rates so they were recommended for air sampling even at high humidities.…”

Section: Recovery Of Acrolein Concentrations Dosed Into Chamber Airmentioning

confidence: 99%

Determination of acrolein in ambient air and in the atmosphere of environmental test chambers

Schieweck

Uhde

Salthammer

2021

Environ. Sci.: Processes Impacts

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Effects of adsorbent sampling variables on the accurate measurement of isoprene

Choi

Dinh

Kim

et al. 2023

Korean J. Chem. Eng.

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Volatile organic compounds (VOCs) are air pollutants that require accurate measurements and analysis.Isoprene is a VOC and an important indicator of photochemical smog. Isoprene originates from various sources, including natural substances, human respiration, and industrial activities such as semiconductor, rubber, and lumber manufacturing. However, despite the availability of multiple methods for measuring VOCs, there are currently no clear guidelines for their analysis. This study aims to improve the accuracy of isoprene sampling and analysis. This was achieved by varying the adsorbent and sampling conditions, followed by gas chromatography and thermal desorption. Various sampling temperatures and ow rates were used to determine the recovery rate of isoprene using different adsorbents. Single-bed Carbosieve S and double-bed Tenax TA/Carbosieve S and Tenax TA/Carbotrap were used as adsorbents. It was found that Carbotrap revealed a higher isoprene recovery rate, although Carbotrap had a weaker adsorption capacity than Carbosieve S . Moreover, the recovery rate of isoprene increased signi cantly as the sampling temperature and ow rate decreased.

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Determination of recovery rates of adsorbents for sampling very volatile organic compounds (C1C6) in dry and humid air in the sub-ppb range by use of thermal desorption gas chromatography-mass spectrometry

Cited by 15 publications

References 19 publications

On the use of Carbograph 5TD as an adsorbent for sampling VVOCs: validation of an analytical method

On the use of Carbograph 5TD as an adsorbent for sampling VVOCs: validation of an analytical method

Determination of acrolein in ambient air and in the atmosphere of environmental test chambers

Effects of adsorbent sampling variables on the accurate measurement of isoprene

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