Concentrations of plutonium-239 and -240, cesium-137 and strontium-90 in the waters of the Laurentian Great Lakes.  Comparison of 1973 and 1976 values

Alberts, James J.; Wahlgren, M. A.

doi:10.1021/es00083a010

Cited by 28 publications

(10 citation statements)

References 3 publications

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“…Wahlgren and Nelson suggested that the uptake of plutonium is dominated by a surface coating process. A sub sequent study by Alberts and Wahlgren (34) showed that plutonium exists as a simple anionic complex or is associated with particles smaller than 30 Λ and negatively charged. They also determined that the pro portion of both radiocesium and plutonium in the dissolved state was consistent with previous values of the distribution coefficient.…”

Section: Lake Particulate Mattermentioning

confidence: 99%

The Role of Particulate Matter in the Movement of Contaminants in the Great Lakes

Eadie

Robbins

1987

Sources and Fates of Aquatic Pollutants

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Particle-contaminantinteractions and subsequent behavior of the particulate matter control the long-term concentration of many compounds in aquatic systems. Even in deep systems such as the Great Lakes, particle settling times from the water column are less than 1 year. After reaching the bottom, contaminant-laden particles are redistributed by episodic cycles of resuspension and redeposition, resulting in focusing, which is the spatially inhomogeneous distribution of contaminants in sediments. Bioturbation, coupled with focusing, provides source material to the resuspendible pool. The combination of these processes mediates both the composition and long-term behavior of contaminants in these lakes.IN THE GREAT LAKES, AS IN MANY AQUATIC SYSTEMS, the movement of particulate matter plays a crucial role in determining the levels and fate of most contaminants. Persistent hydrophobic contaminants have a strong affinity for particles. As a result, the process of sorption and settling into the sediments is generally a major removal mechanism. This mechanism is very important in large systems such as the Great Lakes, where hydraulic residence times are long (3-190 years), and particle residence times in the water column are generally much less than 1 year. Thus, contaminants with a high degree of affinity for settling particles can be very efficiently scavenged from the system. However, studies of the long-term behavior of certain fallout radionuclides and stable contaminants (J, 2) have shown that higher levels persist in the lakes than This chapter not subject to U.S.

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Section: Lake Particulate Mattermentioning

confidence: 99%

The Role of Particulate Matter in the Movement of Contaminants in the Great Lakes

Eadie

Robbins

1987

Sources and Fates of Aquatic Pollutants

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“…The Pu-239,240/Cs-137 ratio m water, suspended matter and sediments of freshwater lakes without additional landbased radioactivity sources were studied at many locations in North America and Europe (Wahlgren and Nelson, 1975;Alberts & Wahlgren, 1981 ;Edgington & Robbins, 1975;Wan et al, 1987). Alberts and Wahlgren (1981) was 0.0118.±0.0035 (Wahlgren and Nelson, 1975).…”

Section: -A-2 Plutonium In Global Falloutmentioning

confidence: 99%

“…Alberts and Wahlgren (1981) was 0.0118.±0.0035 (Wahlgren and Nelson, 1975). A Pu-239,240/Cs-137 ratio of 0.01647±0.0054 was found in Lake Michigan sediments in 1972-74 by Edgington and Robbins (1975).…”

Section: -A-2 Plutonium In Global Falloutmentioning

confidence: 99%

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The history of plutonium and cesium-137 contamination of the Ob River delta sediments

Panteleyev¹

1995

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“…137 Cs, a radioisotope produced by the atmospheric testing of nuclear weapons, began to be deposited in significant quantities in 1964 . About 90 percent of the total flux of 137 Cs to the air/water interface of Lake Michigan occurred between 1955 and 1966, prior to the signing of the Limited Nuclear Test Ban Treaty of 1963 (Alberts & Wahlgren, 1981) . Despite sporadic inputs in recent years, the amount of 137 Cs in the atmosphere has decreased since 1966 to near zero.…”

Section: Introductionmentioning

confidence: 99%

137Cs as a tracer of recent sedimentary processes in Lake Michigan

Cahill

Steele

1986

Hydrobiologia

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To determine recent sediment movement, we measured the levels of 137 Cs (an artificial radionuclide produced during nuclear weapons testing) of 118 southern Lake Michigan samples and 27 in Green Bay. These samples, taken from 286 grab samples of the upper 3 cm of sediment, were collected in 1975 as part of a systematic study of Lake Michigan sediment . 137 Cs levels correlated well with concentrations of organic carbon, lead, and other anthropogenic trace metals in the sediment . 137 Cs had a higher correlation with siltsized than with clay-sized sediment (0 .55 and 0 .46, respectively) . Atmospherically derived 137 Cs and trace metals are being redistributed by sedimentary processes in Lake Michigan after being incorporated in suspended sediment . We determined a distribution pattern of 137 Cs that represents areas of southern Lake Michigan where sediment deposition is occurring .

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Concentrations of plutonium-239 and -240, cesium-137 and strontium-90 in the waters of the Laurentian Great Lakes. Comparison of 1973 and 1976 values

Cited by 28 publications

References 3 publications

The Role of Particulate Matter in the Movement of Contaminants in the Great Lakes

The Role of Particulate Matter in the Movement of Contaminants in the Great Lakes

The history of plutonium and cesium-137 contamination of the Ob River delta sediments

137Cs as a tracer of recent sedimentary processes in Lake Michigan

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