Saturday 7 May 2011

Example of half- life

For example, the biological half-life of water in a human is about 7 to 14 days, though this can be altered by behaviour. The biological half-life of cesium in humans is between one and four months. This can be shortened by feeding the person Prussian blue, which acts as a solid ion exchanger which absorbs the cesium while releasing potassium ions.

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