caa a22 4500 465730329 CHVBK 20180323111739.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF02049343 doi (NATIONALLICENCE)springer-10.1007/BF02049343 210Pb(210Po) speciation of aquatic deposits: Refinement and utility [Elektronische Daten] [F. El-Daoushy, R. Garcia-Tenorio] A refined chemical procedure for speciation studies of sediments has been thoroughly examined. The suggested method, although only tested on210Pb (210Po), could be applied to other chemical species, especially heavy metals and radioactive nuclides. Successive dissolutions using dilute HC1 (1-2.5%) and NaOH (0.5-1%) proved that the geochemistry of fulvic, humic, and mineral compounds plays an important role in the mobility, transport, and accumulation of210Pb in various aquatic systems. This work demonstrates that210Pb, as well as analogous isotopes and metals-based dating and tracing applications, could be further improved and extended using proper speciation techniques. The procedure given here allows not only evaluation of supported and unsupported210Pb but also the resolution of anomalies in modelling biogeochemical cycles. Akadémiai Kiadó, 1990 El-Daoushy F. Department of Physics, Uppsala University, Box 530, S-751 21, Uppsala, Sweden aut Garcia-Tenorio R. Department of Physics, Uppsala University, Box 530, S-751 21, Uppsala, Sweden aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 138/1(1990-01-01), 5-15 0236-5731 138:1<5 1990 138 10967 https://doi.org/10.1007/BF02049343 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02049343 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- El-Daoushy F. Department of Physics, Uppsala University, Box 530, S-751 21, Uppsala, Sweden aut NATIONALLICENCE 700 1- Garcia-Tenorio R. Department of Physics, Uppsala University, Box 530, S-751 21, Uppsala, Sweden aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 138/1(1990-01-01), 5-15 0236-5731 138:1<5 1990 138 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer