NO₂MEASUREMENT WITH A PASSIVE SAMPLER: ASSESSMENT OF THE SENSITIVITY OF TWO TYPES OF PALMES DIFFUSION TUBES FOR NO₂

Abstract

The sensitivity of two types of Palmes diffusion tubes for NO₂ have been evaluated in this study. This was under field conditions by exposing the two types of a Palmes diffusion tube simultaneously carried out at the Bockenheim (Frankfurt) air monitoring station, where NO₂ is continuously monitored by a chemiluminescent NO₂ analyzer.

Results obtained indicate that the Passive Sampling tube a 8.20 cm in length is more sensitive and reliable, based on obtained accuracy values of 1.40–15.00%. The accuracy of the diffusion tube with length 7.47 cm varied from 10.70–36.80% of the actual value (continuous monitor).

Keywords:

• Passive Sampling
• Nitrogen dioxide
• Diffusion tubes
• Continuous monitor

Notes

*Corresponding author. Email: [email protected]

Additional information

Notes on contributors

E.E. UKPEBOR

*Corresponding author. Email: [email protected]