Field comparison of passive samplers versus UV-photometric analyser to measure surface ozone in a Mediterranean area

Abstract

The aim of the present work is to compare the performance of the Radiello passive sampler versus UV-photometric ozone analyser to measure surface ozone in a Mediterranean Spanish coastal area. The comparison presented considers precision, bias, accuracy, selectivity, detection limit, cost and applicability. For assessing precision, co-located samplers were exposed in duplicate in two reference-sampling sites, beside UV-photometric ozone analyser. Bias was calculated comparing results of passive samplers exposed in three reference-sampling sites and two contrast-sampling sites with the measurements given by the reference analysers. Accuracy was calculated following the EN 482:1994 standard. The limit of detection was calculated as 3 times the standard deviation of the blanks in a batch of passive samplers. The compared Radiello passive samplers give a precision of 5.2%, a bias of 13.8%, an accuracy of 20.5% and a limit of detection of 12.6 microg m(-3). The selectivity and applicability of this methodology is in both aspects successful. Surface ozone levels measured with passive samplers were comparable with the averaged values measured with the reference analyser both in the reference-sampling sites and in the contrast-sampling sites.

Spatial Distribution of BTEX and Inorganic Pollutants During Summer Season in Yalova, Turkey

“…Ozone has a longer duration in rural atmospheres where ozone is not exhausted by chemical reactions. From studies carried out on this subject, it is known that pollutants move to rural areas from the city centres and industrial zones according to various factors of meteorology and air movements and generate ozone by photochemical reactions in these areas [42]. Figure 6 shows the spatial distribution of SO 2 .…”

Trends in arsenic levels in PM10 and PM2.5 aerosol fractions in an industrialized area

“…In the area of study, which is the main Spanish and second European industrial ceramic cluster (Delgado-Saborit and Esteve-Cano 2007), the main source of arsenic aerosol is related to the ceramic industry. Arsenic is present as an impurity in some boracic minerals, 4 namely colemanite, hydroboracite and ulexite, which are widely used for reducing melting point of the ceramic frits (Esteve and Ramos 1999).…”