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Titolo:
THE CONTRIBUTION OF SULFATE AND NITRATE TO ATMOSPHERIC FINE PARTICLESDURING WINTER INVERSION FOGS IN CACHE VALLEY, UTAH
Autore:
MANGELSON NF; LEWIS L; JOSEPH JM; CUI WX; MACHIR J; WILLIAMS NW; EATOUGH DJ; REES LB; WILKERSON T; JENSEN DT;
Indirizzi:
BRIGHAM YOUNG UNIV,DEPT CHEM & BIOCHEM PROVO UT 84602 UTAH STATE UNIV,UTAH CLIMATE CTR LOGAN UT 84322 UTAH STATE UNIV,CTR ATMOSPHER & SPACE SCI LOGAN UT 84322 BRIGHAM YOUNG UNIV,DEPT PHYS & ASTRON PROVO UT 84602
Titolo Testata:
Journal of the Air & Waste Management Association [1995]
fascicolo: 2, volume: 47, anno: 1997,
pagine: 167 - 175
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANNULAR DENUDER; SYSTEM; COLLECTION; SAMPLES; SO2;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
N.F. Mangelson et al., "THE CONTRIBUTION OF SULFATE AND NITRATE TO ATMOSPHERIC FINE PARTICLESDURING WINTER INVERSION FOGS IN CACHE VALLEY, UTAH", Journal of the Air & Waste Management Association [1995], 47(2), 1997, pp. 167-175

Abstract

Air pollutants were collected in Logan, Cache County, UT, in February1993 during two periods of atmospheric inversion accompanied by fog. The following atmospheric species were determined: (1) gaseous SO,, NO, (semi-quantitatively), HNO3, NH3, and HF; (2) fine particulate SO4, NO3,(-) NH4'+ F-, H+, C, Si, S, K, Ca, Ti, Mn, Fe, Ni, Cu, Zn, Pb, Se,Br, and Sr; and (3) fine particulate mass, which was calculated. The major components of fine particulate matter were carbonaceous material, ammonium nitrate, and ammonium sulfate, while the soil component wassmall. Calculated, fine particulate mass averaged 80 mu g/m(3) and reached concentrations as high as 120 mu g/m(3). SO2/SOx and NO2/NOy mole ratios generally varied between 0.2 and 0.1 during inversions. Theseratios also showed moderate but consistent diurnal patterns. The emission inventory for Cache County indicates sources of SO2 and NOx but not significant amounts of primary sulfate and nitrate. The observations reported here indicate there is significant conversion of SO2 and NOx in the presence of excess oxidants to sulfuric and nitric acid that are neutralized by excess ammonia.

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Documento generato il 27/09/20 alle ore 22:57:41