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The formation of atmospheric sulphates in the presence of ammonia and sulphur dioxide in Venice

Die Bildung von atmosphärischen Sulfaten beim Vorhandensein von Ammoniak und Schwefeldioxid in Venedig

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Summary

Field measurements of sulphur dioxide and ammonia concentrations were taken to point out the formation of sulphates in the presence of SO2, NH3 and liquid water. Monthly average data showed two opposite seasonal trends; high winter levels for sulphur dioxide and high summer levels for ammonia.

The amounts of SO −−4 calculated applying the Junge and Ryan laboratory model are reliable especially if they are compared with SO −−4 field measurements observed in 1972, 1973 and 1974.

Zusammenfassung

Es wurden Messungen der Schwefeldioxid-und Ammoniakkonzentration durchgeführt, um die Bildung von Sulfaten beim Vorhandensein von SO2, NH3 und Wasser nachzuweisen. Die Monatsmittelwerte zeigten zwei entgegengesetzte Jahresgänge: hohe Winterwerte bei SO2 und hohe Sommmerwerte bei NH3. Die nach der Laboratoriumsmethode von Junge und Ryan berechneten Werte von SO −−4 ergaben sich als zuverlässig, besonders im Vergleich mit in den Jahren 1972, 1973 und 1974 gemessenen SO −−4 -Werten.

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  1. V. Fassina

    Present address: Gabinetto Scientifico del Laboratorio di Restauro di S. Gregorio, Dorsoduro, 170, Venezia, Italy

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    Fassina, V. The formation of atmospheric sulphates in the presence of ammonia and sulphur dioxide in Venice. Arch. Met. Geoph. Biokl. B. 28, 165–172 (1980). https://doi.org/10.1007/BF02243843

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    • DOI: https://doi.org/10.1007/BF02243843

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