total acid available rubidium
total acid recoverable rubidium
total Rb
dissolved plus acid recoverable rubidium
determinands
Total acid recoverable rubidium, 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.
dissolved rubidium
acid recoverable rubidium