Cycling of Trace Elements in the Estuarine Environment. I. Movement and Distribution of Zinc 65 and Stable Zinc in Experimental Ponds

Duke, Thomas W.; Willis, James N.; Price, Thomas J.

doi:10.2307/1350983

Cited by 15 publications

(4 citation statements)

References 16 publications

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“…In the absence of bacterial activity, the radioactive tracer exchanged with about one-half the available zinc. This agrees poorly with the results of Duke et al (1966) who reported that in an artificial pond, 99.9% of the Zn-65 added eocchanged with the sediments in 60 days. There is some question that the process encountered in their experiment was actually exchange.…”

Section: Figure 27supporting

confidence: 77%

STUDY ON THE CHEMICAL BEHAVIOR OF ZINC IN CHESAPEAKE BAY WATER USING ANODIC STRIPPING VOLTAMMETRY. Technical Report 76.

Bradford¹

1972

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Section: Figure 27supporting

confidence: 77%

STUDY ON THE CHEMICAL BEHAVIOR OF ZINC IN CHESAPEAKE BAY WATER USING ANODIC STRIPPING VOLTAMMETRY. Technical Report 76.

Bradford¹

1972

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“…More data are available for Zn and Mn in S. alterniflora than have been published for Pb. Uptake and loss of 65 Zn and Mn in this species have been reported by Duke et al (1966) and Ustach (1969). Average concentrations of Zn and Mn in the same species have been reported by Broome et al (1973) and Wolfe (1973), while Williams & Murdoch (1969) determined levels in its sprouts, mature parts, and dead plant materials.…”

Section: Standardsupporting

confidence: 75%

Lead, Zinc, and Manganese, in Dredge-spoil Pond Ecosystems

Drifmeyer

Odum

1975

Envir. Conserv.

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Pb, Zn, and Mn, levels in sediment and common estuarine plants and animals colonizing dredge-spoil disposal areas were compared with levels occurring in the same materials from a natural salt-marsh. Finegrained dredge-spoil had considerabily higher levels of all three metals than did natural salt-marsh sediment, and large differences in the metals content of the spoil were observed, depending on sediment type.Pb levels in the Grass Shrimp (Palaemonetes pugio), Mummichog (Fundulus heteroclitus), Common Reed (Phragmites communis), Saltmarsh Cordgrass (Spartina alterniflora), and Saltmeadow Hay (Spartina patens), from dredge-spoil areas, were significantly higher at the 0.01 confidence level than in these species from the natural salt-marsh. Zn concentrations were significantly higher at this confidence level in the three plant species growing in dredge-spoil compared with those from the natural marsh. Mn content in Grass Shrimp from ponds in dredge-spoil disposal areas was significantly higher (0.05 confidence level) than in those from the natural marsh. Thus, dredge-spoil containing heavy metals, even though disposed of in specially designed diked containment areas, may act as a source of certain heavy metals that are potentially toxic to the biota.Data on the transfer of Pb and Mn in simple foodchains of the dredge-spoil pond ecosystem are presented and discussed in relation to feeding behaviour. Decreasing concentrations with increasing tropic level were observed for Pb and Mn, but no consistent pattern was noted with Zn.

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“…Dès le premier prélèvement, la répartition du radio nucléide apparaît différente de celle observée en fin de contamination et vol. 11 n'évolue plus par la suite. La plus grande partie du zinc 65 restant se trouve dans les tissus mous alors que la coquille n'en contient plus qu'une très faible partie ( fig.…”

Section: 22 Décontaminationunclassified

“…Le zinc 65 qui provient de certains effluents des centrales nucléaires [1] et des explosions atomiques [2] peut se rencontrer assez fréquemment in situ. Décelé dans divers milieux [3][4][5], il donne lieu à de nombreuses études radioécologiques, in situ ou expérimentales, sur les différents composants des biotopes [6][7][8][9], D'autre part le zinc 65 peut servir de traceur dans des études écologiques fondamentales concernant le cycle du zinc stable [10][11][12] qui est un oligoélément indispensable au déroulement des processus biologiques [13][14][15] Nous présentons ici quelques résultats d'expériences poursuivies avec le zinc 65 sur deux espèces de mollusques bivalves. L'une Unio requieni Michaud d'eau douce, l'autre Mytilus galloprovincialis LmK, marine mais récoltée en eau saumâtre.…”

Section: Introductionunclassified

Étude comparée de la fixation et de la désorption du zinc 65 par un mollusque marin (Mytilus galloprovincialis LmK) et un mollusque dulcicole (Unio requieni Michaud)

Foulquier

Baudin

1976

Radioprotection

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The kinetics of zinc 65 contamination and distribution was studied in two species of mollusks: a salt water (Mytillus galloprovincialis LmK) and a fresh water (Unio requieni Michaud) species. After 50 days the concentration factor was approximately 500 for Unio requieni, but only 30 for Mytilus galloprovincialis on the 31st day of contamination. Radionuclide retention was essentially localized in the internal organs: 82.5 p. cent for Unio requieni, and 68.1 p. cent for Mytilus galloprovincialis. Zinc 65 desorption was also examined. It was a much slower and gradual process than contamination. Two biological half-lives for zinc 65 were determined for each species. The shorter half-life was similar in both cases (5 days), while the second was somewhat longer for Mytilus galloprovincialis (130 days) than for Unio requieni (80 days). The distribution of zinc 65 remaining in the organism was slightly different from that observed at the end of the contamination period. With respect to the total activity in the animal the radionuclide concentration in the internal organs was higher: 96 p. cent for Unio requieni and 72.6 p. cent for Mytilus galloprovincialis. RADIOPROTECTION

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Cycling of Trace Elements in the Estuarine Environment. I. Movement and Distribution of Zinc 65 and Stable Zinc in Experimental Ponds

Cited by 15 publications

References 16 publications

STUDY ON THE CHEMICAL BEHAVIOR OF ZINC IN CHESAPEAKE BAY WATER USING ANODIC STRIPPING VOLTAMMETRY. Technical Report 76.

STUDY ON THE CHEMICAL BEHAVIOR OF ZINC IN CHESAPEAKE BAY WATER USING ANODIC STRIPPING VOLTAMMETRY. Technical Report 76.

Lead, Zinc, and Manganese, in Dredge-spoil Pond Ecosystems

Étude comparée de la fixation et de la désorption du zinc 65 par un mollusque marin (Mytilus galloprovincialis LmK) et un mollusque dulcicole (Unio requieni Michaud)

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