Radioactive Fall-out in Air and Rain

Cambray, R. S.; Fisher, E.; Playford, K.; Peirson, D. H.

doi:10.1136/bmj.1.5323.74-a

BMJ

1963

DOI: 10.1136/bmj.1.5323.74-a

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Radioactive Fall-out in Air and Rain

R. S. Cambray¹,

E. Fisher²,

K. Playford³

et al.

Abstract: general practitioners undertake minor operations in specially equipped rooms, and a staff of nurses are available for applying dressings, giving injections, and so on. Valuable features of the centre are the common toom and library, where practitioners can meet to discuss their problems and consult periodicals and reference books.

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Caesium-137 profiles in the sediments of a partial-meromictic lake on Great Sandy Island (Fraser Island), Queensland, Australia

1983

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Hidden Lake is a perched, brown-water lake located in the centre of Great Sandy Island (Fraser Is.), S.E. Queensland. It is highly acid (pH 4.0), oligotrophic and is thermally and chemically stratified for most of the year. The sediments revealed a 137Cs profile which departed from the temporal pattern of 37 Cs fallout in Brisbane and was represented by an exponential increase of 37 Cs towards the surface sediments from ca. 32 cm depth. The possible causes of the divergent profile are discussed, including physical and biological mixing, lag in the transport of catchment material to the sedimentary basin, diffusion, recycling and biological concentration. It is hypothesised that a combination of the last four processes, with diffusion facilitated by the highly acid conditions, are the major causes of the observed 37 Cs profile. Possible recycling and bioconcentration of 137Cs raises questions as to the validity of this method of dating in similar environmental conditions, and as to the interpretation of other palaeochemical data. These hypotheses are to be tested against profiles obtained from 4C, 2 1 0 pb, 2 3 9 / 2 4 0 Pu analyses of the sediment, and the measurement of 137Cs activity in the water and biota of the lake.

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Caesium-137 profiles in the sediments of a partial-meromictic lake on Great Sandy Island (Fraser Island), Queensland, Australia

1983

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Radioactive nuclear bomb fallout

Westhuizen

1969

Atmospheric Environment (1967)

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Radioactivity in silt from the River Lea, England

Day

Zumpe

1986

Environmental Pollution Series B, Chemical and Physical

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Radioactive Fall-out in Air and Rain

Cited by 5 publications

References 0 publications

Caesium-137 profiles in the sediments of a partial-meromictic lake on Great Sandy Island (Fraser Island), Queensland, Australia

Caesium-137 profiles in the sediments of a partial-meromictic lake on Great Sandy Island (Fraser Island), Queensland, Australia

Radioactive nuclear bomb fallout

Radioactivity in silt from the River Lea, England

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