Polonium-210 and lead-210 in marine food chains

  title={Polonium-210 and lead-210 in marine food chains},
  author={Mireille Heyraud and R. D. Cherry},
  journal={Marine Biology},
Abstract210Po and 210Pb have been measured systematically in whole animals, muscle and hepatopancreas of crustaceans and of molluscan cephalopods representative of a pelagic and benthic food chain. The same nuclides were also measured in liver, pyloric caecum, stomach contents and muscle of tuna. The concentration factors from sea water to whole animals were approximately constant along both food chains, being of the order of 104 for 210Po and 102 for 210Pb. The highest concentration factors… 
Polonium-210 content of marine shrimp: Variation with biological and environmental factors
The 210Po data are interpreted as indicating changes in the food regime of different shrimp; specifically it is suggested that 210Po-rich items such as hepatopancreas, faecal pellets and organic particulates are likely to be important in the diet of shrimp which feed at depth in the ocean.
Polonium (210Po) and lead (210Pb) in marine organisms and their transfer in marine food chains.
  • F. Carvalho
  • Environmental Science
    Journal of environmental radioactivity
  • 2011
210Po in the marine biota of Korean coastal waters and the effective dose from seafood consumption.
Polonium-210: its relative enrichment in the hepatopancreas of marine invertebrates
The enrichment factor concept is used, and a simple marine biogeochemical classification of the elements results, and the enrichment factors for Ag.
Bioaccumulation of polonium‐210 in marine copepods
Model-predicted 210 Po concentrations in copepods in different ocean regions closely matched independent measurements, suggesting that the processes governing this element’s enrichment in zooplankton can be understood and thus can make quantitative predictions of its bioconcentration on a site-specific basis.
Experimental studies on the accumulation of polonium‐210 by marine phytoplankton
This isotope was not irreversibly bound to the cells but displayed a biological half-life of ;23 d, and could be useful as a tracer of the flux of organic matter in ocean surface waters.
Lead-210 and polonium-210 concentrations in some species of marine molluscs.
Polonium-210 in cartilaginous fishes (Chondrichthyes) from south-eastern Australian waters
The study of the concentration of the naturally occurring radionuclide polonium-210 in the livers of cartilaginous fishes caught in the waters of Port Phillip Bay, Victoria, Australia in 1991 found that the concentration appeared to be species related.
Polonium-210 and lead-210 in Antarctic marine biota and sea water
The data show that there are allometric relationships between the 210Po content of euphausiids and animal size and the limited sea-water data presented are characterized by unusually high 210Po:210Pb activity ratios and need further investigation.
Bioaccumulation of 210Po and 210Pb in cephalopods collected from Kudankulam (Southeastern coast of Gulf of Mannar, India) and assessment of dose in human beings.
The data generated will act as a reference database for these organisms of this coast in which a nuclear power station is under construction.


Polonium-210 in euphausiids: A detailed study
It is concluded that zooplankton metabolic activity plays an important role in transporting 210Po from the surface layers of the ocean to depth, and that fecal pellets constitute the major elimination route.
Polonium-210 in Man
  • C. Hill
  • Environmental Science
  • 1965
The correspondence both for grazing animals and humans between the levels of polonium-210 in the food of a community and in the tissues of its members clearly indicates that food ingestion is an important route for acquisition of body-burdens of the nuclide.
Quantitative Radiochemical Procedure for Analysis of Polonium-210 and Lead-212 in Minerals
A method for the analysis of polonium-210 (138.4-day half life) and lead- 212 (10.6-hour half life) in zircons and other natural systems was developed. The procedure employs spontaneous
Polonium radioactivity in certain mid-water fish of the Eastern Temporal Pacific.
Natural radioactive /sup 210/Po activities of nine food organisms of tunas were determined. These measurements included individual organ anslysis in many instances for making comparisons with
Turnover and vertical transport of zinc by the euphausiid Meganyctiphanes norvegica in the Ligurian Sea
The participatory turnover time of ionic zinc by the adult Meganyctiphanes norvegica population in the Ligurian Sea ranged between 498 and 1243 years, depending upon the available food supply, and considering the food chain as the only route for zinc accumulation by the population.
Natural α-Radioactivity Concentrations in Bone and Liver from Various Animal Species
The preliminary results of a comparative interspecies study on total alpha-activities in bone ash from about a dozen different animal species are reported.
Low-level polonium and radiolead analysis.
  • S. C. Black
  • Environmental Science
    Hispalis medica; revista sevillana de medicina y cirugia
  • 1961
The methods are applied to the analysis of experimental animals exposed to natural levels of radon and its short-lived daughters, yielding a natural Po whole body content of about 5 x 10-15 c/g.
The determination of low levels of polonium-210 in environmental materials.