کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4423820 1308846 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of atmospheric stability on the mass concentration and chemical composition of atmospheric particles: A case study in Rome, Italy
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Influence of atmospheric stability on the mass concentration and chemical composition of atmospheric particles: A case study in Rome, Italy
چکیده انگلیسی

PM10 concentration and chemical composition (ions and carbon compounds) at three sampling stations in Rome and in its surroundings was determined daily during a one-month field study, carried out during December 2003.PM concentration at the traffic station was considerably higher than at the urban background and semi-rural stations; elemental carbon was detected as one of the chemical components responsible for this increase. The difference in the concentration of sulphate and ammonium was negligible, as it was expected for secondary pollutants. A negative artefact in the determination of ammonium nitrate by means of heated automatic monitors was highlighted.The dilution properties of the lower atmosphere were traced by means of a natural radioactivity monitor. This parameter has been found to play an essential role in pollution buildup. A considerable increase in PM concentration was observed to coincide with periods of atmospheric stability. The main difference in PM composition between periods of high concentration and periods of “clean” air was found to be in the increase of ammonium nitrate concentration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environment International - Volume 34, Issue 5, July 2008, Pages 621–628
نویسندگان
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