Deposition history of lead as revealed in wetland ecosystems using <sup>210</sup>Pb chronology

Schell, W.R.; McGarry, A.T.; Novák, Martin; Mitchell, P.I.; Wieder, R. Kelman

doi:10.1080/03680770.1992.11900100

Cited by 5 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When organic matter decomposes, clay-rich inorganic sediments should further retard Pb migration. Little mixing of Pb would occur below the active root zone where anoxic conditions exist (Schell et al, 1997). Yet variable biogeochemical environments in marshland sediments subjected to periodic saturation may increase Pb mobility.…”

Section: Introductionmentioning

confidence: 69%

ISOTOPIC EVALUATION OF Pb OCCURRENCES IN THE RIVERINE ECOSYSTEMS OF THE KANKAKEE WATERSHED, ILLINOIS‐INDIANA¹

Sidle¹,

Roose²,

Barndt

2001

J American Water Resour Assoc

View full text Add to dashboard Cite

Environmental background levels of Pb were measured in ponds, river waters, sediments, suspended sediments, rocks, and air particulates within the Kankakee watershed during the period of 1995 to 1999. Stable isotopic Pb distinguished airborne Pb and its incorporation into riverine wetland sediments from geogenic Pb measured in river sediments. The provenance of the naturally‐occurring Pb is from carbonate bedrock and contributes comparable concentrations in riverbank sediments (25.9–30.4 mg kg−1) as Pb found in wetland sediments (18.6–24.8 mg kg−1). Estimates of anthropogenic Pb contributions from airfall into the Kankakee wetlands were found to be near 0.43–0.71 Bq cm−2 yr−1 during 1995 to 1999. While leachable Pb data suggests the uppermost layers of pond sediments were disturbed, 210Pb analyses from undisturbed sedimentation suggests Pb‐bearing sediments accumulate approximately 0.46–0.51 cm yr−1 in the ponds within the riparian zones. Transboundary Pb pollution from aerosols of industrial Pb across the Great Lakes occurs, but Pb isotopy indicates that the Pb concentrations are comparable to natural concentrations of Pb in both waters and sediments within the Kankakee watershed.

show abstract

Section: Introductionmentioning

confidence: 69%

ISOTOPIC EVALUATION OF Pb OCCURRENCES IN THE RIVERINE ECOSYSTEMS OF THE KANKAKEE WATERSHED, ILLINOIS‐INDIANA¹

Sidle¹,

Roose²,

Barndt

2001

J American Water Resour Assoc

View full text Add to dashboard Cite

show abstract

“…Comparable contributions to lead deposition from NA Westerlies along the Irish coast in 1988 (58%) have been calculated using wind direction rosette [ Véron et al , 1994]. Peat bog archives in Norway, Ireland, and Scotland [ Dunlap et al , 1999; Schell et al , 1997; Weiss et al , 2002] as well as eolian particulate measurements in Oslo [ Aberg et al , 1999] suggest similar mixing ratios for western European maritime locations.…”

Section: Resultsmentioning

confidence: 99%

Spatial and temporal evolution of lead isotope ratios in the North Atlantic Ocean between 1981 and 1989

Weiß

Boyle

et al. 2003

J. Geophys. Res.

View full text Add to dashboard Cite

Lead concentrations and isotope ratios were measured in North Atlantic surface water samples collected in 1981 (29°–79°N, 6°E–49°W) and in 1989 (23°–39°N, 29°–68°W). In the early 1980s, 206Pb/207Pb ratios in the North African Basin averaged 1.193 ± 0.005 (1 σ). Similar radiogenic ratios within the level of analytical precision (average 0.29%) were found in the Labrador and Iceland Basins (1.198 ± 0.006) and in the Norwegian Sea (1.196 ± 0.008). These radiogenic mixed layer signatures along with atmospheric global lead emission patterns suggest that most North Atlantic lead in the early 1980s was derived from North American leaded gasoline. Samples in the East Iberian Basin near Portugal and France showed lower 206Pb/207Pb ratios, between 1.167 and 1.182, indicating a significant influence of less radiogenic atmospheric lead transported from Europe and possibly the influence of the Rio Tinto acid mine drainage very close to shore in the Gulf of Cadiz. [Pb] across the entire North Atlantic Basin ranged between 54 and 145 pmol/kg, with the lowest values (54–74 pmol/kg) found at high latitudes (>65°N). In the late 1980s, surface waters in the western subtropical North Atlantic (North American Basin/Sargasso Sea, >47°W) and in the eastern subtropical North Atlantic (North African Basin/Central Iberian Basin, <45°W) showed very similar 206Pb/207Pb signatures with little zonal variation, ranging from 1.177 to 1.192. Lead concentrations ranged between 47 and 137 pmol/kg, increasing slightly from west to east. South of 25°N in the equatorial North Atlantic, crossing the subtropical/tropical surface water boundary, the 206Pb/207Pb seawater signatures were significantly less radiogenic (1.170–1.175) and concentrations were lower (≤51 pmol/kg). This difference suggests a relative increase in the atmospheric lead supply from the western Mediterranean/North African continent via Trade Easterlies and illustrates the effective barrier between the subtropical/tropical surface water exchanges. Triple‐isotope plots (206Pb, 207Pb, and 208Pb) suggest that most of the lead can be accounted for by wet aerosol deposition derived from the adjacent landmasses of America to the west (transported via the North American Westerlies) and from Europe to the east (transported via the European Easterlies) and probably by some advected surface waters from the Sargasso Sea. The 1989 triple‐isotope plot suggests, however, a third lead source in the subtropical western North Atlantic, possibly leaded gasoline from Mexico. Gasoline lead emission patterns as well as atmospheric lead isotope signatures confirm that gasoline was the main pollutant source in the early 1980s but suggest that contributions from high‐temperature industrial processes (coal combustion, steel manufacture, waste incineration) have been increasing in the late 1980s. From isotopic mass balance estimates, lead inputs to the 1980s North Atlantic were dominated by North American sources (>53%). These elemental and isotopic results demonstrate the strongly variable isotopic and elemen...

show abstract

“…Peat bogs have been used over the last 20 years to study the atmospheric pollution of trace metals by estimating the historical deposition rate through dating and measuring metals in cores (Jensen, 1997;Veijalainen, 1998;Shotyk, 1996a;1996b). In many studies, the recent chronology of the peat bog was estimated by dating a peat core using isotopic methods, such as the 210 Pb dating technique (Shotyk et al, 1996;Appleby et al, 1997;Schell et al, 1997). However, the 210 Pb dating technique for dating peats has been shown to be of varying reliability and it does not work in all cases (Oldfield et al, 1995).…”

Section: Resultsmentioning

confidence: 99%

Dating of recent catchment peats using spheroidal carbonaceous particle (SCP) concentration profiles with particular reference to Lochnagar, Scotland

Yang

Rose²,

Battarbee

2001

The Holocene

View full text Add to dashboard Cite

Ten peat cores were taken from the catchment of Lochnagar, a remote mountain lake in the Cairngorms region of Scotland. Organic content, measured as loss-on-ignition (LOI), profiles of most of the cores are high (<90%) throughout. As the movement of spheroidal carbonaceous particles (SCPs) is insignificant, with steady accumulation, the peats can be used as an archive for reconstructing the historical records of SCP deposition. The SCP profiles of these cores were matched to the SCP dating features of a Lochnagar lake-sediment core so that the catchment peats could be dated. The results show that the start of SCP record is a good dating feature. The applicability of the rapid increase in SCP concentration for dating depended on the stability of peat accumulation, whereas the subsurface peak may be a useful future dating horizon.

show abstract

Deposition history of lead as revealed in wetland ecosystems using ²¹⁰Pb chronology

Cited by 5 publications

References 1 publication

ISOTOPIC EVALUATION OF Pb OCCURRENCES IN THE RIVERINE ECOSYSTEMS OF THE KANKAKEE WATERSHED, ILLINOIS‐INDIANA¹

ISOTOPIC EVALUATION OF Pb OCCURRENCES IN THE RIVERINE ECOSYSTEMS OF THE KANKAKEE WATERSHED, ILLINOIS‐INDIANA¹

Spatial and temporal evolution of lead isotope ratios in the North Atlantic Ocean between 1981 and 1989

Dating of recent catchment peats using spheroidal carbonaceous particle (SCP) concentration profiles with particular reference to Lochnagar, Scotland

Contact Info

Product

Resources

About

Deposition history of lead as revealed in wetland ecosystems using 210Pb chronology

Cited by 5 publications

References 1 publication

ISOTOPIC EVALUATION OF Pb OCCURRENCES IN THE RIVERINE ECOSYSTEMS OF THE KANKAKEE WATERSHED, ILLINOIS‐INDIANA1

ISOTOPIC EVALUATION OF Pb OCCURRENCES IN THE RIVERINE ECOSYSTEMS OF THE KANKAKEE WATERSHED, ILLINOIS‐INDIANA1

Spatial and temporal evolution of lead isotope ratios in the North Atlantic Ocean between 1981 and 1989

Dating of recent catchment peats using spheroidal carbonaceous particle (SCP) concentration profiles with particular reference to Lochnagar, Scotland

Contact Info

Product

Resources

About

Deposition history of lead as revealed in wetland ecosystems using ²¹⁰Pb chronology

ISOTOPIC EVALUATION OF Pb OCCURRENCES IN THE RIVERINE ECOSYSTEMS OF THE KANKAKEE WATERSHED, ILLINOIS‐INDIANA¹

ISOTOPIC EVALUATION OF Pb OCCURRENCES IN THE RIVERINE ECOSYSTEMS OF THE KANKAKEE WATERSHED, ILLINOIS‐INDIANA¹