Chromium biological half-life

Prepd from radioactive chromium ( ICr) which has a half-life of 26.5 days. The emission of gamma rays is applicable to biological tagging and tracing. Other properties identical with those of Ordinary sodium chromate. Available as soln for intravenous injection or for mixing with blood. Unbound chromate in the plasma can be reduced with ascorbic add or may be removed by separation aud washing of cells. 

BIOLOGICAL PROPERTIES not likely to migrate to groundwater uptake by plants is generally low chromium compounds are very persistent in water, half-life >200 days most in surface waters may be present in particulate form as sediment Cr (IV) is the major stable form in seawater can be detected in water by digestion followed by atomic absorption or by colorimetry analysis or by Inductively Coupled Plasma Optical Emission Spectrometry chromium (IV) can be detected by extraction and atomic adsorption or colorimetry dissolved forms can be detected by 0.45 p filtration followed by the previous methods... 

---