Radio-activity of Potassium and other Alkali Metals

Abstract

PROF. MCLENNAN'S lelter in NATURE of May 14 (p. 29) makes it desirable that I should record that my experiments continue to be in contradiction to those he describes. Whether the activity of potassium is due to an extraneous impurity or to the element itself, it is to be expected that some separation of the activity should be possible. For the last year and a half I have been trying to effect such a separation without result. All samples of the same pure salt which I have procured or prepared are identical in activity. In one experiment a sample of the sulphate was crystallised twenty-two times, in another a sample of the nitrate was crystallised eighteen times without introducing any difference between the final products; in a third a sample of potassium sulphate was prepared direct from wood ashes, and found to agree with a commercial sample prepared from the Stassfurt deposits. I propose now to prepare a third sample direct from felspar.

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

CAMPBELL, N. Radio-activity of Potassium and other Alkali Metals. Nature 78, 55 (1908). https://doi.org/10.1038/078055a0

Download citation

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.