Articles | Volume 12, issue 3
https://doi.org/10.5194/amt-12-1685-2019
https://doi.org/10.5194/amt-12-1685-2019
Research article
 | 
15 Mar 2019
Research article |  | 15 Mar 2019

The interference of tetrachloromethane in the measurement of benzene in the air by a gas chromatography–photoionisation detector (GC-PID)

Cristina Romero-Trigueros, María Esther González, Marta Doval Miñarro, and Enrique González Ferradás

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Esther González Duperón on behalf of the Authors (07 Feb 2019)
ED: Publish subject to minor revisions (review by editor) (12 Feb 2019) by Pierre Herckes
AR by Esther González Duperón on behalf of the Authors (15 Feb 2019)  Author's response   Manuscript 
ED: Publish as is (19 Feb 2019) by Pierre Herckes
AR by Esther González Duperón on behalf of the Authors (22 Feb 2019)  Author's response   Manuscript 
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Short summary
Determining benzene in ambient air is mandatory in the European Union. The reference measuring technique is by gas chromatography (GC), and a photometric ionisation detector is recommended. This study shows that the simultaneous presence of benzene and tetrachloromethane causes a significant decrease in GC–photoionisation detector (GC-PID) readings. Given the importance of this behaviour, a possible mechanism was proposed. This study highlights the uncertainty of measuring benzene with a GC-PID.