Concentration and Distribution of Uranium in Mytilus edolis and Associated Materials

Hamilton, E.I.

doi:10.3354/meps002061

Cited by 32 publications

(6 citation statements)

References 13 publications

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“…More significant was the observation that none of these materials were associated with hot spots; instead, the distribution of alpha particle activity was homogenous which would be reconcilable with direct uptake (active or passive), of a conservative species from seawater. Such a conclusion was also reached by Hamilton (1980) for uranium in the same materials. Further The Arn/Pu ratio found for Fucus vesiculosus sampled at the same time is similar to that found for the byssal threads.…”

Section: Conclusion and Discussionsupporting

confidence: 65%

“…Of the resuspended particulate debris present in the water column, very little is available to the mussel and that which is ingested is mainly excreted in the various types of faeces. Hodge et al (1979) calculate that the mussel only derives about 11 % of its uranium from solid phases; Hamilton (1980) has shown that the distribution of uranium in the mussel is almost identical to that observed for Pu and Am, hence a direct comparison seems realistic.…”

Section: Conclusion and Discussionmentioning

confidence: 97%

“…Alpha Particle Distribution Studies Hamilton (1980) has shown that for practical purposes the major source of alpha emitting radionuclides in the Esk mussels and silts samples originates from Pu and Am. Natural alpha particle activity of the surface sediments arising from U + Th is < 25 pCi g-l, most of which is contained in crystals of zircon and sphene, compared with > 200 pCi g-' from transuranium radionuclides derived from BNFL effluent.…”

Section: Methodsmentioning

confidence: 99%

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Concentration and Distribution of the Transuranium Radionuclides 239 + 240Pu, 238Pu and 241Am in Mytilus edulis, Fucus vesiculosus and Surface Sediment of Esk Estuary

Hamilton¹,

Clifton²

1980

Mar. Ecol. Prog. Ser.

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Concentrations and distributions are reported for 239 + 240h, 2 3 8 P~ and 2 4 1~m in Mytilus edulisL., Fucus vesiculosus L. and surface sediment from the Esk estuary Cumbria UK, which is subjected to effluents from the British Nuclear Fuel Ltd uranium reprocessing plant at Windscale, Cumbria. For M. edulis, data was obtained on total soft tissues, shell and for 11 organs and tissues. The distribution of alpha particle activity for thin sections of the mussels was obtained by autoradiography using a new thermoset dielectric detector CR-39. Evidence is presented which indicates that uptake of transuranium radionuclides is probably from seawater rather than from ingested sediment. Pu und Am retained within the intestinal tract is excreted in faeces; that which enters the systemic circulation gives rise to a diffuse distribution. No significant enr~chment of Pu and Am occurs in kidney granules, but in the pericardial gland as a result of ultrafiltration processes localised enhanced levels of alpha radioactivity were observed. Highest enrichment of Pu and Am occurs in byssal threads and periostracum, lowest in the shell when the periostracum has been removed. Alpha particle distribution for byssal threads and periostracum is diffuse, hot-spots are absent and hence uptake is probably direct form conservative species present in the seawater. In situ dialysis studies in surface silty sediments of the area provide evidence of conservative species for both Pu and Am. Differences in concentration of Pu and Am for 1977in 1979 there was an increase in levels of h in the mussel and sediment. F. vesiculosus contained more h than Am. However, the Am/Pu ratio for F. vesiculosus is similar to that in byssal threads of M. edulis.

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Section: Conclusion and Discussionsupporting

confidence: 65%

Section: Conclusion and Discussionmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

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Concentration and Distribution of the Transuranium Radionuclides 239 + 240Pu, 238Pu and 241Am in Mytilus edulis, Fucus vesiculosus and Surface Sediment of Esk Estuary

Hamilton¹,

Clifton²

1980

Mar. Ecol. Prog. Ser.

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“…Byssal threads secreted by marine mussels, particularly by the Mytilidae, the most widespread species in contaminated coastal waters, have been considered as very attractive for biomonitoring trace metals in the estuarine environment [1][2][3] because they accumulate high amounts of metals. Active elimination of metals from the soft tissues to byssus by a possible 'detoxification' mechanism has even been considered [2].…”

Section: Introductionmentioning

confidence: 99%

Effects of species and sites on metal concentrations in byssal threads of two mytilids

Jaworski

Karasiński

Bulska

et al. 2015

International Journal of Environmental Analytical Chemistry

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“…The concentration and distribution of U and Th in various environmental components, especially in marine food such as plankton, rnacroalgae, corals, molluscs, crustacea and ducks, have been investigated by several authors (Amiel et al, 1973;Bangera & Patel, 1984;Blanchard & Oakes, 1965;Blanchard et al, 1967;Chassard-Bouchaud, 1982a, 1983Chassard-Bouchaud & Escaig, 1984;Edgington et al, 1970;Flor & Moore, 1977;Gvirtzman et al, 1973;Hamilton, 1980;Hodge et al, 1979;Holm & Persson, 1980;Kharkar et al, 1976;Knauss & Ku, 1983;Koide et al, 1982;Livingston & Thompson, 1971;Miyake et al, 1970;M611er et al, 1983;Omura, 1976;Schroeder et al, 1970;Schwochau et al, 1976;Sugimura & Mayeda, 1980;Szefer, 1987;Szefer & Falandysz, 1983;Szefer & Wenne, 1987;Thompson & Livingston, 1970;Tsytsugina et al, 1973;Veeh & Turekian, 1968). A survey of the literature (on the basis of 74 articles) concerning the concentration, discrimination and distribution of U in marine biosphere has been presented by Szefer (1989).…”

Section: Introductionmentioning

confidence: 99%

Uranium and thorium in muscle tissue of fish taken from the southern Baltic

Szefer

Falandysz

1990

Helgolander Meeresunters

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The determination of U and Th was carried out on pooled samples of muscle tissue of cod (Gadus morhua), herring (Clupea harengus), sprat (Sprattus sprattus) and some other species of fish caught in 1981 in the southern Baltic. The levels of U obtained in the present study are generally within the ranges presented by other authors for fish from different aquatic regions of the world. The concentrations of U are similar to those found for Th in Baltic fish analysed. The concentration factors CFu(Th), discrimination factors DFu/Th and Th/U ratios (by weight) were calculated and discussed. These coefficients were also compared with values determined in other Baltic organisms. Transfer of U and Th along a food chain from potential prey (diet) to fish as predator (consumer) was quantified with a transfer factor. 9 Biologische Anstalt Helgoland, Hamburg

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Concentration and Distribution of Uranium in Mytilus edolis and Associated Materials

Cited by 32 publications

References 13 publications

Concentration and Distribution of the Transuranium Radionuclides 239 + 240Pu, 238Pu and 241Am in Mytilus edulis, Fucus vesiculosus and Surface Sediment of Esk Estuary

Concentration and Distribution of the Transuranium Radionuclides 239 + 240Pu, 238Pu and 241Am in Mytilus edulis, Fucus vesiculosus and Surface Sediment of Esk Estuary

Effects of species and sites on metal concentrations in byssal threads of two mytilids

Uranium and thorium in muscle tissue of fish taken from the southern Baltic

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