Heterogeneous reaction of NO2 with CaCO3, an abundant and reactive component in mineral dust aerosol, was investigated this work at different relative humidifies (RH, up to 80%), using a fixed-bed reactor. Ion chromatograph vapor sorption analyzer were employed measure changes particulate nitrate water time (up 24 h). When concentration ∼10 ppmv (∼2.5 × 1014 molecule cm−3), CaCO3 showed very lo...

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 This model study examines the sensitivity of the calculated optical properties of urban aerosols to (a) hygroscopicity and (b) internal or external mixing state, and it further investigates the associated implications for the accuracy of satellite retrievals of aerosol optical thickness (τ) and aerosol effective radius (reff). State...

Abstract. The impact of molecular level surface chemistry for aerosol water-uptake and droplet growth is not well understood. In this work, spherical, nonporous, monodisperse polystyrene latex (PSL) particles treated with different functional groups are exploited to isolate the effects activation. PSL effectively water insoluble changes in particle may be considered a critical factor initial up...

Hygroscopicity is one of the most important properties wood and plays a decisive role in its dimensional stability. In this context, conservation plans for waterlogged archaeological (WAW) relevant artefacts must be created. The size sample required moisture sorption assessment may affect results (and thus perception of) hygroscopicity testing artefact. Herein, to investigate effects on WAW as ...

D. O. Topping, G. B. McFiggans, and H. Coe School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, The Sackville street building, Sackville street, Manchester M60 1QD, UK Received: 17 November 2004 – Accepted: 6 December 2004 – Published: 23 December 2004 Correspondence to: D. O. Topping ([email protected]) © 2004 Author(s). This work is lice...