title: Selective separation of iron from uranium in quantitative determination of traces of uranium by alpha spectrometry in soil/sediment sample.
abstract: During this work, controlled redox potential methodology was adopted for the complete separation of traces of uranium from the host matrix of mixed hydroxide of Iron. Precipitates of Fe(+2) and Fe(+3) along with other transuranic elements were obtained from acid leached solution of soil by raising the pH to 9 with 14N ammonia solution. The concentration of the uranium observed in the soil samples was 200-600 ppb, whereas in sediment samples, the concentration range was 61-400 ppb.
authors.affiliation: Analytical Chemistry Division, Bhabha Atomic Research Center, Mod-Labs, Trombay, Mumbai 400085, India. rsinghal@barc.gov.in
authors.forename: R K
authors.initials: RK
authors.lastname: Singhal
authors.forename: Usha
authors.initials: U
authors.lastname: Narayanan
authors.forename: Rupali
authors.initials: R
authors.lastname: Karpe
authors.forename: Ajay
authors.initials: A
authors.lastname: Kumar
authors.forename: A
authors.initials: A
authors.lastname: Ranade
authors.forename: V
authors.initials: V
authors.lastname: Ramachandran