caa a22 4500 46573197X CHVBK 20180323111744.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF02060199 doi (NATIONALLICENCE)springer-10.1007/BF02060199 Determination of thorium isotopes in gas lantern mantles by alpha-spectrometry [Elektronische Daten] [L. Doretti, D. Ferrara, G. Barison] A procedure for the determination of the three main isotopes of thorium in gas lantern mantles by alpha-spectrometry has been developed. The samples examined were dissolved in concentrated nitric acid and thorium was precipitated as hydroxide. Thorium was then dissolved in hydrochloric acid to be extracted into a TOPO solution, back-extracted with sulfuric acid, electrodeposited onto a steel disc and finally counted alpha-spectrometrically. The radiochemical recovery for thorium was 94% with a counting efficiency of 37%. Akadémiai Kiadó, 1990 Doretti L. Servizio di Sicurezza del Lavoro e Protezione Sanitaria del CNR, Corso Stati Uniti 4, 35020, Padova, (Italy) aut Ferrara D. Servizio di Sicurezza del Lavoro e Protezione Sanitaria del CNR, Corso Stati Uniti 4, 35020, Padova, (Italy) aut Barison G. Servizio di Sicurezza del Lavoro e Protezione Sanitaria del CNR, Corso Stati Uniti 4, 35020, Padova, (Italy) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 141/1(1990-07-01), 203-208 0236-5731 141:1<203 1990 141 10967 https://doi.org/10.1007/BF02060199 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02060199 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Doretti L. Servizio di Sicurezza del Lavoro e Protezione Sanitaria del CNR, Corso Stati Uniti 4, 35020, Padova, (Italy) aut NATIONALLICENCE 700 1- Ferrara D. Servizio di Sicurezza del Lavoro e Protezione Sanitaria del CNR, Corso Stati Uniti 4, 35020, Padova, (Italy) aut NATIONALLICENCE 700 1- Barison G. Servizio di Sicurezza del Lavoro e Protezione Sanitaria del CNR, Corso Stati Uniti 4, 35020, Padova, (Italy) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 141/1(1990-07-01), 203-208 0236-5731 141:1<203 1990 141 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 465109675 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer