Preferred term

acid recoverable thorium

Total acid recoverable thorium, includes dissolved fraction plus that which was present in particulates but dissolved by acidification of the unfiltered sample to 1% with concentrated high purity nitric acid, without heating. This acidification takes place upon sampling and prior to cold storage and subsequent analysis.

Contributor

http://onto.nerc.ac.uk/CAST/82

Created 12/15/10, last modified 5/9/19