Examination of stable carbon and oxygen isotopic variability in the cellulose and wholewood of Castanea sativa Mill., Fagus sylvatica L., Pinus sylvestris L. and Quercus robur L. = Analiza variabilnosti stabilnih izotopov ogljika in kisika v celulozi in lesu branik pravega kostanja (Castanea sativa Mill.), bukve (Fagus sylvatica L.), rdečega bora (Pinus sylvestris L.) In doba (Quercus robur L.)
Sladden, B. ...
V prispevku so predstavljeni rezultati primerjave analize stabilnih izotopov ogljika in kisika v lesu in celulozi drevesnih branik štirih najpogostejših drevesnih vrst v Veliki Britaniji: pravega ...kostanja, bukve, doba in rdečega bora. Les teh drevesnih vrst pogosto najdemo tudi v različnih lesenih konstrukcijah, kar nam, v kombinaciji z lesom iz živih dreves, omogoča rekonstrukcijo klime v čas pred instrumentalnimi meritvami. Razvoj detekcijskih tehnik za stabilne izotope je omogočil uporabo stabilnih izotopov tudi tam, kjer to tradicionalno ni bilo možno (npr. za datiranje starih stavb), še vedno pa je glavna ovira za širšo uporabo teh metod zahtevna in zamudna ekstrakcija celuloze iz posameznih lesnih branik. Primerjava stabilnih izotopov kisika in ogljika v lesu in (alfa)-celulozi je potrdila dosedanje vedenje in dodala nova spoznanja o primerljivosti razmerij stabilnih izotopov, analiziranih v lesu in celulozi, kar nam bi lahko omogočilo izločitev zamudne tehnike ekstrakcije celuloze in neposredno uporabo homogeniziranega lesa b
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