caa a22 4500 477061141 CHVBK 20180405111400.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF00162410 doi (NATIONALLICENCE)springer-10.1007/BF00162410 Distribution of nitrate over sea-salt and soil derived particles — Implications from a field study [Elektronische Daten] [Tuomo Pakkanen, Veli-Matti Kerminen, Risto Hillamo, Minna Màkinen, Timo Màkelà, Aki Virkkula] A method for determining the distribution of supermicrometer nitrate between size-segregated sea-salt and soil derived particles is presented. The analysis is based on field data from six measurements at a coastal site in southern Finland, and on a theoretical treatment taking into account the transfer of gaseous species onto particle surfaces and their subsequent reaction. Significant amounts of nitrate were found in both the particle types, with the fraction of nitrate associated with soil particles varying from 20-50% in the 1-2 μm size to near 90% in particles larger than 10 μm. Overall, the nitrate accumulation followed closely the relative abundances of these two particle types. Two overlapping modes in supermicron nitrate mass size distributions could be identified. The lower mode, associated with sea-salt, was located between the surface-area and volume distribution of sodium peaking at about 2-3 μm of EAD. The upper mode peaked at 3-5 μm and followed more closely the surface-area distribution of calcium in all samples. At our site, the accumulation of nitrate into both particle types was shown to be limited by an effective ‘surface reaction' rate rather than by gas-phase diffusion. This rate was estimated to be considerably larger for sea-salt particles. Strong evidence in support of the saturation of nitrate in sea-salt particles were obtained. Kluwer Academic Publishers, 1996 nitrate nationallicence heterogeneous reactions nationallicence size distribution nationallicence nitric acid nationallicence sea-salt nationallicence soil particles nationallicence Pakkanen Tuomo Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut Kerminen Veli-Matti Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut Hillamo Risto Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut Màkinen Minna Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut Màkelà Timo Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut Virkkula Aki Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut Journal of Atmospheric Chemistry Kluwer Academic Publishers 24/2(1996-06-01), 189-205 0167-7764 24:2<189 1996 24 10874 https://doi.org/10.1007/BF00162410 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00162410 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pakkanen Tuomo Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut NATIONALLICENCE 700 1- Kerminen Veli-Matti Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut NATIONALLICENCE 700 1- Hillamo Risto Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut NATIONALLICENCE 700 1- Màkinen Minna Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut NATIONALLICENCE 700 1- Màkelà Timo Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut NATIONALLICENCE 700 1- Virkkula Aki Air Quality Department, Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki, Finland aut NATIONALLICENCE 773 0- Journal of Atmospheric Chemistry Kluwer Academic Publishers 24/2(1996-06-01), 189-205 0167-7764 24:2<189 1996 24 10874 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer