Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

Radioactive Indicators in the Study of Phosphorus Metabolism in Rats

Abstract

RECENT progress in the production of radioactive isotopes by neutron bombardment makes the radioactive isotope of phosphorus 15P32 easily accessible. This isotope, which has a half-life value of 17 days, can be utilised as an indicator of inactive phosphorus in the same way that the radioactive isotopes of lead, bismuth and so on were formerly used as indicators of these elements. If, for example, we add active 15P32 to 1 mgm. of inactive phosphorus in such quantity that the Geiger counter registers 1,000 impulses per minute, carry out with the phosphorus activated in this way any sort of chemical or biological reaction and then find that the product obtained gives 1 impulse per minute, we may conclude that 1/1,000 mgm. of the phosphorus originally introduced is present in the product investigated.

This is a preview of subscription content

Access options

Buy article

Get time limited or full article access on ReadCube.

$32.00

All prices are NET prices.

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and Permissions

About this article

Cite this article

CHIEWITZ, O., HEVESY, G. Radioactive Indicators in the Study of Phosphorus Metabolism in Rats. Nature 136, 754–755 (1935). https://doi.org/10.1038/136754a0

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1038/136754a0

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing