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Titolo:
STABLE LEAD-ISOTOPE RATIOS IN ALASKAN ARCTIC AEROSOLS
Autore:
STURGES WT; HOPPER JF; BARRIE LA; SCHNELL RC;
Indirizzi:
UNIV E ANGLIA,SCH ENVIRONM SCI NORWICH NR4 7TJ NORFOLK ENGLAND UNIV COLORADO,COOPERAT INST RES ENVIRONM SCI BOULDER CO 80309 ATMOSPHER ENVIRONM SERV DOWNSVIEW M3H 5T4 ON CANADA
Titolo Testata:
Atmospheric environment. Part A, General topics
fascicolo: 17-18, volume: 27, anno: 1993,
pagine: 2865 - 2871
SICI:
0960-1686(1993)27:17-18<2865:SLRIAA>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
AIR-POLLUTION; TRACERS; ORIGIN;
Keywords:
STABLE LEAD ISOTOPES; AEROSOLS; LONG-RANGE TRANSPORT OF AIR POLLUTION; PB-206; PB-207; PB-208; ARCTIC; ALASKA; SOVIET UNION; EUROPE; NORTH AMERICA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
W.T. Sturges et al., "STABLE LEAD-ISOTOPE RATIOS IN ALASKAN ARCTIC AEROSOLS", Atmospheric environment. Part A, General topics, 27(17-18), 1993, pp. 2865-2871

Abstract

Aerosol samples collected at Barrow, Alaska, during February and March 1990 were found to have uniform stable lead isotope compositions. The mean Pb-208/Pb-207 ratio was 2.423 +/- 0.009 and the mean Pb-206/Pb-207 ratio was 1.161+/-0.014. The latter ratio is essentially the same as that obtained from an earlier study of aerosols at two Canadian stations in the High Arctic and is typical of but not unique to, Eurasiansources of atmospheric lead. Further discriminating power was available in this study through the inclusion of Pb-208/Pb-207 ratios, which provided additional evidence that the former Soviet Union and eastern Europe are major contributors to atmospheric particulate lead in the Alaskan Arctic, accounting for around two-thirds of the particulate lead measured at Barrow. The remaining third of the lead is attributed towest European sources. There was no evidence for a substantial North American component, other than local contamination.

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Documento generato il 07/07/20 alle ore 15:45:25