Deposition measurement of particulate matter in connection with corrosion studies
- 2 March 2006
- journal article
- research article
- Published by Springer Science and Business Media LLC in Analytical and Bioanalytical Chemistry
- Vol. 384 (6), 1320-1330
- https://doi.org/10.1007/s00216-005-0293-1
Abstract
A new passive particle collector (inert surrogate surface) that collects particles from all directions has been developed. It was used to measure particle deposition at 35 test sites as part of a project that examined corrosion of materials in order that variation in particulate material could be used in development of dose–response functions in a modern multi-pollutant environment. The project, MULTI-ASSESS, was funded by the EU to examine the effects of air pollution on cultural heritage. Passive samplers were mounted rain-protected, and both in wind-protected and wind-exposed positions, to match the exposure of the samples for corrosion studies. The particle mass and its chemical content (nitrate, ammonium, sulfate, calcium, sodium, chloride, magnesium and potassium) were analysed. The loss of light reflectance on the surrogate surface was also measured. Very little ammonium and potassium was found, and one or more anions are missing in the ion balance. There were many strong correlations between the analysed species. The mass of analysed water-soluble ions was fairly constant at 24% of the total mass. The particle mass deposited to the samplers in the wind-protected position was about 25% of the particles deposited to an openly exposed sampler. The Cl−/Na+ ratios indicate a reaction between HNO3 and NaCl. The deposited nitrate flux corresponds to the missing chloride. The Ca2+ deposition equals the \(\text{SO}_4^{2 - }\) deposition and the anion deficiency. The \(\text{SO}_4^{2 - }\) deposition most likely originates from SO2 that has reacted with basic calcium-containing particles either before or after they were deposited. The particle depositions at the urban sites were much higher than in nearby rural sites. The deposited mass correlated surprisingly well with the PM10 concentration, except at sites very close to traffic.
Keywords
This publication has 22 references indexed in Scilit:
- Neutralisation of Sulphur Dioxide Deposition in a Coniferous CanopyWater, Air, & Soil Pollution: Focus, 2004
- Chemical composition of size-resolved atmospheric aerosols in the eastern Mediterranean during summer and winterAtmospheric Environment, 2002
- Modelling base cations in Europe—sources, transport and deposition of calciumAtmospheric Environment, 1999
- Chemical reaction during the coagulation of ammonium sulphate and mineral particles in the atmosphereScience of The Total Environment, 1998
- Reactions of copper patina compounds—I. Influence of some air pollutantsAtmospheric Environment, 1998
- Size distributions of inorganic and organic species in the atmospheric aerosol in HungaryJournal of Aerosol Science, 1997
- Role of mineral aerosol as a reactive surface in the global troposphereJournal of Geophysical Research: Solid Earth, 1996
- A Laboratory Study of the Effect of Ozone, Nitrogen Dioxide, and Sulfur Dioxide on the Atmospheric Corrosion of ZincJournal of the Electrochemical Society, 1993
- Atmospheric light absorption—A reviewAtmospheric Environment. Part A. General Topics, 1993
- A comparison between wet and bulk deposition at an urban site in the U.K.Water, Air, & Soil Pollution, 1992