Season and diurnal variations of peroxyacetyl nitrate (PAN) in a suburban area of central Italy and their relation with the meteorological conditions and the concentration of other photochemical oxidants and their precursors

Conference · Thu Sep 01 00:00:00 EDT 1988 · Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA)

OSTI ID:7019815

Ciccioli, P; Cecinato, A; Brancaleoni, E; Brachetti, A ^[1]

---

1. Istituto sull'Inquinamento Atmosferico del CNR Area della Ricerca di Roma, Monterotondo Scalo (Italy)

Peroxyacetyl nitrate (PAN), is a photochemical oxidant formed in the atmosphere when large amounts of hydrocarbons (HC) and NO{sub x} are emitted in air and exposed to the UV radiation coming from the sun. Its formation proceeds through the conversion of HC, mainly olefins, into aldehydes that, after oxidation into peroxyradicals, react with NO{sub 2} to give this gaseous pollutant. Although the amount of PAN in air represents a suitable index for measuring photochemical smog and photochemical episodes can easily be observed in many Italian cities, almost no data have been collected in their country. In this paper the authors present the results obtained during a two years monitoring campaign carried in a suburban area of Central Italy placed downwind to Rome. Seasonal and daily trends of PAN will be reported together with the meteorological parameters and the change in concentration of other photochemical oxidants (ozone), its precursors (HC and aldehydes) and some acidic species. The results indicate that PAN, formed within the city, is transported into site together with other oxidants.

• OSTI ID: 7019815
• Report Number(s): CONF-8909232-; CODEN: ACWCA
• Journal Information: Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA), Vol. 28:2; Conference: 8. Japan - United States Governmental conference on solid waste management, Honolulu, HI (USA), 6-7 Sep 1989; ISSN 0099-7293
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ALDEHYDES
AIR POLLUTION MONITORING
HYDROCARBONS
ITALY
AIR POLLUTION
OZONE
PEROXYACETYL NITRATE
DAILY VARIATIONS
ENVIRONMENTAL TRANSPORT
METEOROLOGY
PHOTOCHEMICAL OXIDANTS
PHOTOCHEMICAL REACTIONS
SEASONAL VARIATIONS
URBAN AREAS
CHEMICAL REACTIONS
ESTERS
EUROPE
MASS TRANSFER
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
VARIATIONS
WESTERN EUROPE
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)