Achaeometrical Research in Hungary II., 1988

BIBLIOGRAPHY - SUMMARIES - DATING

Csapó J., Csapó-Kiss Zs.: Age estimation of keratin containing materials based on cystine, cysteic acid, methionine and tyrosine content = International Symposium on Archaeometry, Urbana-Champaign, USA, May 20-24 (1996). A method for evaluating the Age of wool carpets and textiles was developed based on the Age-dependent alteration of amino acid composition of proteins. Samples of 23 wool carpets and textiles of known Age, obtained from the Hungarian Museum of Industrial Arts and the Hungarian National Museum, were analysed for amino acid content. In a Preliminary experiment wool samples were hydrolysed for 24, 48, 72, 96 and 120 h with 6M HCl. It seemed that the normal period of 24 h was not sufficient for complete hydrolysis of wool proteins, therefore it was decided to use 48 h hydrolysis for the remainder of the study. Results were compared with data obtained for contemporary, untreated wool and wool carpet. The cysteic acid content of wool increased with Age. The contemporary wool carpet contained 0.31 g of cysteic acid in 100 g of protein. Comparable figures were 1.87 g for 550-year old carpet and 4.01-4.39 g for the 16001750-year-old wool carpets. Cystine content decreased with Age, corresponding figures being 7.88, 3.12, 1.19-0.97, respectively. Corresponding contents of methionine were 0.43, 0.21, and 0.20-0 and for tyrosine 3.07, 2.11 and 0.20-0. Prediction equations were developed as linear regressions of Age of wool on cysteic acid, cystine and tyrosine contents. The 95% confidence intervals of estimates for two samples of unknown Age were estimates plus or minus 30 and 38 years. Csongor É., Hertelendi E.: Radiokarbon kormeghatározásra alkalmas alacsony hátterű mérőrendszer = Atomki Közlemények 23 (1981) 189. Csongor É., Szabó L, Hertelendi E.: Preparation of counting gas of proportional counters for radiocarbon dating = Radiochemical and Radioanalytical Letters 55 (1982) 303 Csongor É., Bognár-Kutzián I., Szabó I., Hertelendi E.: Radiocarbon dating of Holocene bone samples in Hungary = Chemical and Mathematical Techniques Applied to Archaeology (PACT) 8 (1983)385. 14 Csongor E., Hertelendi E.: Low-level counting facility for С dating = Nuclear Instruments and Methods in Physics Research "B" 17 (1986) 493. Figler A.: Adatok Győr környékének bronzkorához (Angaben zur Bronzezeit in der Umgebung von Győr) = Acta Musei Papensis, Pápai Múzeumi Értesítő 6 (1996) 7-30. The absolute chronology of recently excavated Bronze Age sites in north-western Hungary is discussed on the basis of radiocarbon dates in This paper. Gömöri J., Márton P., Hertelendi E., Benkő L.: Sopron és Darufalva (Drassburg) égett sáncainak kormeghatározása fizikai módszerekkel (Dating of Hungarian earthworks by physical methods. In Hungarian) = Arrabona (Győr) 31-33 (1994) 49. Radiocarbon, archaeomagnetic and thermoluminescence techniques were used to assess dates of construction and life-span of two burned red mounds. 283