Schmidt, R.W.H.R.W.H.SchmidtKames, J.J.KamesKanter, H.J.H.J.KanterSchurath, U.U.SchurathSlemr, F.F.Slemr2022-03-032022-03-031995https://publica.fraunhofer.de/handle/publica/18706110.1016/1352-2310(95)00019-UA new selective O3 scrubber is described, which effectively removes the complex nonlinear O3 interference with NO2 measurements made using the commercial LuminoxR detector (LMA-3, Scintrex/Unisearch Inc.). The scrubber, which consists of a small annular denuder coated with natural rubber (1,4-polyisoprene), was optimized for airborne NO2 measurements of 3 to 4 h duration. Ozone is reduced below 1-2 ppb for doses for at least 600 ppbh (ppb:parts per billion (10 (exp -9)) per volume), while NO2 losses are negligible after preconditioning the scrubber with about 20 ppb h NO2. Simultaneous airborne NO2 measurements in 1992 with two identical LuminoxR instruments showed that the scrubber efficiently removes the systematic overestimation of low tropospheric NO2 mixing ratios by unprotected LuminoxR detectors.enair pollutionchemiluminescenceLuminolmeasurement techniquenitrogen dioxideozone scrubber628journal article