1997
DOI: 10.1007/bf02063625
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Improvements on lead-210 and polonium-210 determination in environmental materials

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Cited by 20 publications
(4 citation statements)
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“…Table 3 showed the comparison of 210 Po chemical recovery between the conventional and this study method which concerned the auto-deposition (spontaneous) method in environmental samples. The improving method has higher chemical recovery than some of the previous techniques (Matthews et al, 2007;Ham et al, 1997;Carvalho et al, 2017;Gwynn et al, 2013;Lin & Wu, 2009;Prabhath et al, 2015) but it was lower than o he s (Sekudewicz & Gąsio owski 19 ia Guogang, et al, 2003). The difference could be related to the volume of the sample, acid solution concentration, redox agents, deposition temperature and time, and detailed steps.…”
Section: Discussionmentioning
confidence: 88%
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“…Table 3 showed the comparison of 210 Po chemical recovery between the conventional and this study method which concerned the auto-deposition (spontaneous) method in environmental samples. The improving method has higher chemical recovery than some of the previous techniques (Matthews et al, 2007;Ham et al, 1997;Carvalho et al, 2017;Gwynn et al, 2013;Lin & Wu, 2009;Prabhath et al, 2015) but it was lower than o he s (Sekudewicz & Gąsio owski 19 ia Guogang, et al, 2003). The difference could be related to the volume of the sample, acid solution concentration, redox agents, deposition temperature and time, and detailed steps.…”
Section: Discussionmentioning
confidence: 88%
“…(a) For the environmental sample in solid state, the digestion step was required. The digestion techniques were classified mainly in two ways including (1) acid digestion (Lin et al, 2009;Cunha et al, 2001;Swift et al, 1998;Ham et al, 1997;Martin et al, 1998;Cho et al, 2016;Prabhath et al, 2015;Sreejith et al, 2014;Jia et al, 2018;Chen et al, 2001; Szarlowicz e a 18 K ç 14 2018; Belivermis et al, 2019; Sanchez-Cabeza e a e a 1998 P aninšek e a 2013; Takizawa et al, 2000;Beals et al, 1989;Sadi et al, 2016) and (2) fusion method Sadi et al, 2016;Maxwell et al, 2019). Acid digestion has been limited to the effect of 210 Po volatilization under different temperature conditions (Martin et al, 1969;Heyraud et al, 1979;Mabuchi et al, 1963;Henricsson et al, 2011;Seiner et al, 2014).…”
Section: Recommended Radiochemical Proceduresmentioning
confidence: 99%
“…Studies under controlled conditions [24] have indicated that direct deposition from the atmosphere is the dominant process affecting activity concentration of 210 Po in the edible parts of leafy crops, whereas root uptake and translocation of intercepted activity to other plant parts is not an important process. Concentration of radionuclides in the above-ground parts of the plants, are therefore expected to be higher than in the roots.…”
Section: Polonium-210 Activity In Food Samplesmentioning
confidence: 99%
“…Συνήθως πρόκειται για αραιά διαλύματα οξέων με τα πιο διαδεδομένα λόγω πλεονεκτημάτων τους να είναι αυτά του υδροχλωρικού οξέος και συνήθεις χρησιμοποιούμενες συγκεντρώσεις μεταξύ 0.1 και 0.5Μ [140]. Έχουν δε αναφερθεί και αρκετά πυκνότερα διαλύματα υδροχλωρικού οξέος [163,164]. Επίσης, έχει αναφερθεί και η χρησιμοποίηση θειικού οξέος [165] ενώ λόγω της υψηλής διαβρωτικότητας που παρουσιάζει απέναντι στα μέταλλα, το νιτρικό οξύ δεν χρησιμοποιείται στις μεθόδους ευρέως διότι βρέθηκε να επηρεάζει αρνητικά την απόδοση της μεθόδου [166,167,168].…”
Section: αυθορμητη εναποθεσηunclassified