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Titolo:
Atmospheric Ph deposition since the industrial revolution recorded by fiveSwiss peat profiles: Enrichment factors, fluxes, isotopic composition, andsources
Autore:
Weiss, D; Shotyk, W; Appleby, PG; Kramers, ID; Cheburkin, AK;
Indirizzi:
Univ Bern, Inst Geol, CH-3012 Bern, Switzerland Univ Bern Bern Switzerland CH-3012 Inst Geol, CH-3012 Bern, Switzerland UnivX,iverpool, Dept Math Sci, Environm Radiometr Res Ctr, Liverpool L69 3B Univ Liverpool Liverpool Merseyside England L69 3BX Ctr, Liverpool L69 3B Univ Bern, Mineral Petrol Inst, CH-3012 Bern, Switzerland Univ Bern BernSwitzerland CH-3012 etrol Inst, CH-3012 Bern, Switzerland Ukrainian Acad Sci, Inst Geol Sci, UA-252054 Kiev, Ukraine Ukrainian Acad Sci Kiev Ukraine UA-252054 l Sci, UA-252054 Kiev, Ukraine
Titolo Testata:
ENVIRONMENTAL SCIENCE & TECHNOLOGY
fascicolo: 9, volume: 33, anno: 1999,
pagine: 1340 - 1352
SICI:
0013-936X(19990501)33:9<1340:APDSTI>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
MULTIELEMENT ANALYZER EMMA; STABLE LEAD ISOTOPES; JURA MOUNTAINS; LAKE-SEDIMENTS; UNITED-KINGDOM; BOG PROFILES; SWITZERLAND; POLLUTION; PB; RATIOS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Engineering, Computing & Technology
Citazioni:
62
Recensione:
Indirizzi per estratti:
Indirizzo: Shotyk, W Univ Bern, Inst Geol, Baltzerstr 1, CH-3012 Bern, Switzerland Univ Bern Baltzerstr 1 Bern Switzerland CH-3012 rn, Switzerland
Citazione:
D. Weiss et al., "Atmospheric Ph deposition since the industrial revolution recorded by fiveSwiss peat profiles: Enrichment factors, fluxes, isotopic composition, andsources", ENV SCI TEC, 33(9), 1999, pp. 1340-1352

Abstract

Atmospheric Pb deposition since the Industrial Revolution was studied in western, central, and southern Switzerland using five rural peat bogs. Similar temporal patterns were found in western and central Switzerland, with two distinct periods of Pb enrichment relative to the natural background: between 1880 and 1920 with enrichments ranging from 40 to 80 times, and between 1960 and 1980 with enrichments ranging from 80 to 100 times. The fluxes also were generally elevated in those time periods: in western Switzerland between 1.16 and 1.55 mu g cm(-2) y(-1) during the first period, and in western and central Switzerland between 0.85 and 1.55 mu g cm(-2) y(-1) during the second period. Between the Industrial Revolution and 1985, nonradiogenic Pb became increasingly important in all five cores because of the replacement of coal by oil after ca. 1920, the use of Australian Pb in industry, and the extensive combustion of leaded gasoline after 1950. The introductionof unleaded gasoline in 1985 had a pronounced effect on the Pb deposition in all five cores. Enrichments dropped sharply (between 2 and 4 times), andthe isotopic ratios reverted back toward (but not achieving) natural values. The cores from western and central Switzerland showed very similar isotopic trends throughout the time period studied, implying that these sites were influenced contemporaneously by similar pollution sources and atmospheric pathways. Southern Switzerland revealed a different record with respect to the Pb pollution: it was dominated by a single massive Pb enrichment dated between 1930 and 1950. During this period the Pb enrichment factor reached similar to 200 times background and the ph flux was similar to 27 mu g cm(-2) y(-1), more than an order of magnitude higher that at the western and central sites. This core also had significantly different post-1950 changesin the Pb isotope ratios.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 04:25:07