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Title: Reconstructing 20th century lead pollution and sediment focusing in a peat land pool (Kempen, Belgium), via Pb-210 dating
Authors: Sonke, JE
Burnett, WC
Hoogewerff, JA
van der Laan, SR
Corbett, DR
Issue Date: 2003
Source: JOURNAL OF PALEOLIMNOLOGY, 29(1). p. 95-107
Abstract: Pb-210 dating of two metal-polluted organic sediment cores obtained near a former pyrometallurgical zinc smelter in Lommel, Belgium have been used to reconstruct atmospheric lead deposition rates during the 20(th) century. Independent knowledge concerning historical pollution events and Cs-137 fall-out profiles has allowed a critical evaluation of the CRS, CIC and CF-CS models for the Pb-210 age interpretation. Resulting ages for the three models suggest that, in this case, the CIC model gives the most accurate interpretation of historical pollution events and atmospheric lead fall-out. The Pb-210 water-sediment flux was estimated at 141-1158 Bq.m(-2).yr(-1) for one site and 62-106 Bq.m(-2).yr(-1) at the other site, during the last century. The large difference illustrates that sediment focusing was important on a small spatial scale (10 m). The direction of focusing correlates with the predominant wind direction. Maximum atmospheric lead deposition rates were found to be 1.63+/-0.59 g.m(-2).yr(-1) around 1968 AD, which is 2 orders of magnitude larger than the Belgian average in 1980 AD, and 5 orders larger than Holocene atmospheric lead deposition.
Notes: Natl High Magnet Field Lab, Geochem Div, Tallahassee, FL 32306 USA. Florida State Univ, Dept Oceanog, Tallahassee, FL 32306 USA. Inst Food Res, Norwich NR4 7UA, Norfolk, England. Ctr Ceram Res, Corus RD&T, Ijmuiden, Netherlands. Limburgs Univ Ctr, B-3590 Diepenbeek, Belgium.Sonke, JE, Natl High Magnet Field Lab, Geochem Div, Tallahassee, FL 32306
Keywords: atmospheric pollution; lead; organic sediment; sediment focusing
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ISSN: 0921-2728
e-ISSN: 1573-0417
DOI: 10.1023/A:1022858715171
ISI #: 000183141800007
Category: A1
Type: Journal Contribution
Validations: ecoom 2004
Appears in Collections:Research publications

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