Accès libre

Comparison of beta (LSC) and gamma (HPGe) spectrometric methods for lead-210 in chronological study

Renata Mikalauskienė

Renata Mikalauskienė

Laboratory of Nuclear Geophysics and Radioecology, State Research Institute Nature Research CentreVilnius, Lithuania
Recherchez cet auteur sur
Sciendo|Google Scholar
Mikalauskienė, Renata
, 
Jonas Mažeika

Jonas Mažeika

Laboratory of Nuclear Geophysics and Radioecology, State Research Institute Nature Research CentreVilnius, Lithuania
Recherchez cet auteur sur
Sciendo|Google Scholar
Mažeika, Jonas
, 
Rimantas Petrošius

Rimantas Petrošius

Laboratory of Nuclear Geophysics and Radioecology, State Research Institute Nature Research CentreVilnius, Lithuania
Recherchez cet auteur sur
Sciendo|Google Scholar
Petrošius, Rimantas
 et 
Piotr Szwarczewski

Piotr Szwarczewski

Department of Geomorphology, Faculty of Geography and Regional Studies, University of WarsawWarsaw, Poland
Recherchez cet auteur sur
Sciendo|Google Scholar
Szwarczewski, Piotr
  
24 janv. 2018
Comparison of beta (LSC) and gamma (HPGe) spectrometric methods for lead-210 in chronological study's Cover Image
À propos de cet article
Article précédent
Article suivant
Citez
Télécharger la couverture
Catégorie d'article: Conference Proceedings of the 12International Conference “Methods of Absolute Chronology” May 11-13, 2016, Gliwice-Paniówki, Poland
Publié en ligne: 24 janv. 2018
Pages: 34 - 43
Reçu: 29 juin 2016
Accepté: 20 nov. 2017
DOI: https://doi.org/10.1515/geochr-2015-0084
Mots clés
© 2016 R. Mikalauskiene., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

Study sites: Lake Karackiai, Lithuania (I) and Lake Rajgrod Poland (II).
Study sites: Lake Karackiai, Lithuania (I) and Lake Rajgrod Poland (II).

Fig. 2

Scheme of 210Pb separation procedure
Scheme of 210Pb separation procedure

Fig. 3

Distribution of the total 210Pb measured by two methods versus core depth of Lake Karackiai (Lithuania).
Distribution of the total 210Pb measured by two methods versus core depth of Lake Karackiai (Lithuania).

Fig. 4

Distribution of the total 210Pb measured by two methods versus core depth of Lake Rajgrod (Poland).
Distribution of the total 210Pb measured by two methods versus core depth of Lake Rajgrod (Poland).

Fig. 5

Distribution of the 210Pb excess versus core depth for Lake Karackiai (Lithuania).
Distribution of the 210Pb excess versus core depth for Lake Karackiai (Lithuania).

Fig. 6

Distribution of the 210Pb excess versus core depth for Lake Rajgrod (Poland).
Distribution of the 210Pb excess versus core depth for Lake Rajgrod (Poland).

Fig. 7

CRS model 210Pb dates versus depth for Lake Karackiai core. There are also shown 137Cs activity changes versus depth and dates derived from 210Pb CRS model.
CRS model 210Pb dates versus depth for Lake Karackiai core. There are also shown 137Cs activity changes versus depth and dates derived from 210Pb CRS model.

Fig. 8

CRS model 210Pb dates versus depth for Lake Rajgrod core. There are also shown 137Cs activity changes versus depth and dates derived from 210Pb CRS model.
CRS model 210Pb dates versus depth for Lake Rajgrod core. There are also shown 137Cs activity changes versus depth and dates derived from 210Pb CRS model.

Sediment mass accumulation and sedimentations rates (mean values) based on 210Pbex evaluated by gamma and beta methods_

CoreMass accumulation rate (g/cm2/yr)Sedimentation rate (cm/yr)
gamma methodgamma methodbeta methodbeta method
Lake Karackiai0.0090.0080.140.12
Lake Rajgrod0.0600.0550.410.33

Comparison of investigated radiochemical procedures_

Procedure#1#2#3
Pb2+ carrierRadiochemical yield
72 ± 6%77 ± 4%76 ± 4%
Precipitates of PbSO4 dissolved inSolubility
2 ml 6M ammonium acetate2 ml 3M ammonium acetate2 ml 0.5M EDTA/NaOH
+++
18 ml scintillation cocktailOptiphase nisaie 3Homogeneity
PbSO4 in 2 ml 6M ammonium acetatePbSO4 in 2 ml 3M ammonium acetatePbSO4 in 2 ml 0.5M EDTA/NaOH
++–
210Pb tracerRadiochemical yield
70 ± 5%73 ± 8%70 ± 6%
Langue:
Anglais
Périodicité:
1 fois par an
Sujets de la revue:
Géosciences, Géosciences, autres
RSS Feed de la revue