Ivan Kourtchev

TL;DR: The Cambridge Atmospheric Simulation Chamber (CASC) as discussed by the authors has been used for real-time quantification of reactive oxygen species (ROSI) produced during secondary organic aerosol (SOA) formation.

TL;DR: In this article, a new processing scheme is introduced implementing filtering methods based on element assignment, instrumental error, and blank subtraction, which allows both positive and negative direct infusion electrospray ionisation (ESI) and atmospheric pressure photoionisation (APPI) acquisition with the same programs.

TL;DR: The results of this work suggest that photolysis of 1-nitronaphthalene represents a previously unidentified pathway to SOA formation in the troposphere and analogous mechanisms may also be important for other nitrated polycyclic aromatic hydrocarbons.

TL;DR: A weak correlation in the time series of the organic and inorganic gaseous pollutants indicates a combination of different sources in both seasons and NO2 results suggest a spatial heterogeneity in gaseously pollutants levels beyond initial expectations.

TL;DR: In this article, the authors present a critical overview of certified reference materials (CRMs) related to WFD monitoring needs, and show how a CRM could be used in the estimation of measurement uncertainty for checking compliance at the Environmental Quality Standard level, according to technical specifications given in Directive 2009/90/EC.