scholarly journals Lime Mortar and Plaster: A Radiocarbon Dating Tool for Dating Nabatean Structures in Petra, Jordan

Radiocarbon ◽  
2012 ◽  
Vol 54 (3-4) ◽  
pp. 905-914 ◽  
Author(s):  
Khaled Al-Bashaireh ◽  
Gregory W Hodgins
Keyword(s):  
Hydrochloric Acid ◽  
Acid Hydrolysis ◽  
Radiocarbon Dating ◽  
Historical Data ◽  
Lime Mortar ◽  
Lime Plaster ◽  
Hydrolysis Of

This research aims at radiocarbon dating 2 structures of archaeological interest from Petra, south Jordan, using lime plaster and mortar. Initially, the samples' content of calcareous contamination was examined by petrography and cathodoluminescence. In order to date clean lime binders, the samples were gently crushed and 63–45 μm powders were collected by dry sieving, then the CO2 gases, collected by a hydrochloric acid hydrolysis of the powders, were dated. The interpreted 14C dates clarify the chronology of the studied structures, show an agreement with the archaeological and historical data, and may indicate the efficiency of the cleaning and hydrolysis procedures.

Studies on the lignin of Eucalyptus regnans F. Muell. VII. The acid hydrolysis of ethanyol lignin-A

1953 ◽  
Vol 6 (2) ◽  
pp. 156 ◽  
Author(s):  
JWT Merewether
Keyword(s):  
Hydrochloric Acid ◽  
Acid Hydrolysis ◽  
Carbonyl Group ◽  
Dilute Hydrochloric Acid ◽  
Hydroxyl Groups ◽  
Eucalyptus Regnans ◽  
Ethoxyl Group ◽  
Hydrolysis Of

Ethanol lignin-A from the ethanolysis of Eucalyptus regnans P. Muell. has been hydrolysed with dilute hydrochloric acid with the object of ascertaining whether the combined ethoxyl is present as an acetal or as ether. Hydrolysis with 12 per cent. hydrochloric acid was found to split off one ethoxyl group, while hydrolysis with 20 per cent. acid brought about complete de-ethylation. The de-ethylated ethanol lignin-A contained one carbonyl group less and two hydroxyl groups more than the original ethanol lignin-A. These results lend no support to the hypothesis that alcohol lignins are acetals, and favour the theory that the combined alkoxyl is probably present as ether.

Hydrochloric acid hydrolysis of bromazepam. Identification and relevance of some additional products

1982 ◽  
Vol 4 (1) ◽  
pp. 12-15 ◽  
Author(s):  
M. M. A. de Bruyne ◽  
A. Sinnema ◽  
A. M. A. Verweij
Keyword(s):  
Hydrochloric Acid ◽  
Acid Hydrolysis ◽  
Hydrolysis Of

scholarly journals Acid Hydrolysis of Phenylthiohydantoins of Amino Acids

1971 ◽  
Vol 24 (4) ◽  
pp. 1247 ◽  
Author(s):  
AS Inglis ◽  
PW Nicholls ◽  
CM Roxburgh
Keyword(s):  
Amino Acids ◽  
Hydrochloric Acid ◽  
Thin Layer ◽  
Acid Hydrolysis ◽  
Free Amino ◽  
Hydriodic Acid ◽  
Ultraviolet Spectroscopy ◽  
Quantitative Identification ◽  
Layer Chromatography ◽  
Hydrolysis Of

The phenylthiohydantoins (PTHs) derived from amino acids were hydrolysed in boiling hydriodic acid for 24 hr. Good yields of free amino acids were obtained for all PTH derivatives except methionine. In contrast to hydrolysis with hydrochloric acid, hydrolysis with hydriodic acid converts PTH-threonine, PTH-serine, and PTH-tryptophan respectively to oc-amino-n-butyric acid, alanine, and a mixture (approx. 2: 1) of glycine and alanine. This procedure provides a useful adjunct to thin-layer chromatography and ultraviolet spectroscopy for quantitative identification of the PTH derivative.

Chlorine emission and dechlorination in co-firing coal and the residue from hydrochloric acid hydrolysis of Discorea zingiberensis

Fuel ◽  
2006 ◽  
Vol 85 (14-15) ◽  
pp. 2034-2040 ◽  
Author(s):  
Caixiang Zhang ◽  
Yanxin Wang ◽  
Zhihua Yang ◽  
Minghou Xu
Keyword(s):  
Hydrochloric Acid ◽  
Acid Hydrolysis ◽  
Hydrolysis Of

Prospects for the use of titanium alloys for the production of apparatus for the hydrochloric acid hydrolysis of yeasts

1983 ◽  
Vol 19 (3) ◽  
pp. 249-253
Author(s):  
R. K. Melekhov ◽  
M. V. Koval' ◽  
A. M. Krutsan ◽  
V. E. Blashchuk ◽  
A. V. Zykov
Keyword(s):  
Hydrochloric Acid ◽  
Titanium Alloys ◽  
Acid Hydrolysis ◽  
Hydrolysis Of

A Rapid Vapor-Phase Acid (Hydrochloric Acid and Trifluoroacetic Acid) Hydrolysis of Peptide and Protein

1987 ◽  
Vol 102 (6) ◽  
pp. 1593-1597 ◽  
Author(s):  
Akira TSUGITA ◽  
Toyoaki UCHIDA ◽  
H.Werner MEWES ◽  
Tatsuaki ATAKA
Keyword(s):  
Hydrochloric Acid ◽  
Acid Hydrolysis ◽  
Vapor Phase ◽  
Trifluoroacetic Acid ◽  
Hydrolysis Of

RADIOCARBON DATING OF ORGANIC MATTER FROM A CULTIVATED TOPSOIL IN EASTERN CANADA

1977 ◽  
Vol 57 (3) ◽  
pp. 375-377 ◽  
Author(s):  
Y. A. MARTEL ◽  
P. LASALLE
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Acid Hydrolysis ◽  
Humic Acids ◽  
Radiocarbon Dating ◽  
Fulvic Acids ◽  
Eastern Canada ◽  
Total Soil ◽  
The Mean ◽  
Hydrolysis Of

Radiocarbon dating was used to determine the mean residence time of the organic matter from a Gleysolic Ap horizon of eastern Canada. The total soil organic matter and the fulvic acids dated modern, the humic acids as 1,220 ± 150 yr B.P. and the humin as 180 ± 100 yr B.P. Acid hydrolysis of the total soil organic matter yielded a soluble fraction dating modern and an unhydrolyzed material dating 1,530 ± 110 yr B.P. Acid hydrolysis of this topsoil appears practical to separate the soil organic matter into two fractions of different stability. Fractionation into fulvic, humic acids and humin may help to give information on the dynamics of the soil organic matter by separating the soil into at least three fractions of varying stability.

Acid Hydrolysis of Chitosan to Oligomers Using Hydrochloric Acid

2019 ◽  
Vol 42 (9) ◽  
pp. 1741-1746 ◽  
Author(s):  
Nawzat D. Aljbour ◽  
Mohammad D. H. Beg ◽  
Jolius Gimbun
Keyword(s):  
Hydrochloric Acid ◽  
Acid Hydrolysis ◽  
Hydrolysis Of
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