Accuracies in Po-210 determination for lead-210 dating
作者： F. El-Daoushy , K. Olsson , R. Garcia-Tenorio
DOI: 10.1007/978-94-011-3592-4_5
关键词: Small sample 、 Isotope dilution 、 Alpha spectrometry 、 Absolute dating 、 Environmental science 、 Deposition (aerosol physics) 、 Sediment 、 Mineralogy 、 Aquatic environment 、 Sedimentary depositional environment
摘要: Various laboratory techniques have been utilized worldwide for measuring lead-210 in sub-recent deposits through its grand-daughter product polonium-210. Isotope dilution alpha spectrometry proved a suitable tool absolute determination of the dating aquatic deposits. Moreover, isotope along with speciation experiments can be used to resolve depositional anomalies arising from supported lead-210/Ra-226 disequilibrium levels and unsupported mobile fractions. sediment peat has critically evaluated more than ten years. Our results show that type, size composition analyzed as well radiochemical procedures used, together counting techniques, are important factors influencing determinations tailing corrections using granddaughter Optimization these parameters is prime importance achieve economic accurate analyses, especially at low concentrations small sample sizes.
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Kjell Johansson, Heavy metals in Swedish forest lakes : factors influencing the distribution in sediments Acta Universitatis Upsaliensis. ,(1988)
M. Farid, A.F. El-Daoushy, M.F.A.F. El-Daoushy, An ionization chamber and a Si-detector for lead-210 chronology Nuclear Instruments and Methods in Physics Research. ,vol. 188, pp. 647- 655 ,(1981) , 10.1016/0029-554X(81)90278-0
A.P. Fleer, M.P. Bacon, Determination of 210Pb and 210Po in seawater and marine particulate matter Nuclear Instruments and Methods in Physics Research. ,vol. 223, pp. 243- 249 ,(1984) , 10.1016/0167-5087(84)90655-0
John A. Robbins, D.N. Edgington, Determination of recent sedimentation rates in Lake Michigan using Pb-210 and Cs-137 Geochimica et Cosmochimica Acta. ,vol. 39, pp. 285- 304 ,(1975) , 10.1016/0016-7037(75)90198-2
J.D. Eakins, R.T. Morrison, A new procedure for the determination of lead-210 in lake and marine sediments The International Journal of Applied Radiation and Isotopes. ,vol. 29, pp. 531- 536 ,(1978) , 10.1016/0020-708X(78)90161-8
S.R. Joshi, R.W. Durham, Determination of 210Pb, 226Ra and 137Cs in sediments Chemical Geology. ,vol. 18, pp. 155- 160 ,(1976) , 10.1016/0009-2541(76)90052-8
L.K. Benninger, R.C. Aller, J.K. Cochran, K.K. Turekian, Effects of biological sediment mixing on the210Pb chronology and trace metal distribution in a Long Island Sound sediment core Earth and Planetary Science Letters. ,vol. 43, pp. 241- 259 ,(1979) , 10.1016/0012-821X(79)90208-5
Larry K. Benninger, 210Pb balance in Long Island Sound Geochimica et Cosmochimica Acta. ,vol. 42, pp. 1165- 1174 ,(1978) , 10.1016/0016-7037(78)90111-4
Farid El-Daoushy, Kimmo Tolonen, Lead-210 and heavy metal contents in dated ombrotrophic peat hummocks from Finland Nuclear Instruments and Methods in Physics Research. ,vol. 223, pp. 392- 399 ,(1984) , 10.1016/0167-5087(84)90681-1
J.N. Smith, A. Walton, Sediment accumulation rates and geochronologies measured in the Saguenay Fjord using the Pb-210 dating method Geochimica et Cosmochimica Acta. ,vol. 44, pp. 225- 240 ,(1980) , 10.1016/0016-7037(80)90134-9