Articles | Volume 12, issue 3
Atmos. Meas. Tech., 12, 1685–1695, 2019
https://doi.org/10.5194/amt-12-1685-2019
Atmos. Meas. Tech., 12, 1685–1695, 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 et al.

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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.