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Dating Silk By Capillary Electrophoresis Mass Spectrometry.
MedLine Citation:
PMID:  21913691     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A new capillary electrophoresis mass spectrometry (CE-MS) technique is introduced for age estimation of silk textiles based on amino acid racemization rates. With an l to d conversion half-life of ∼2500 years for silk (B. mori) aspartic acid, the technique is capable of dating silk textiles ranging in age from several decades to a few-thousand-years-old. Analysis required only ∼100 μg or less of silk fiber. Except for a 2 h acid hydrolysis at 110 °C, no other sample preparation is required. The CE-MS analysis takes ∼20 min, consumes only nanoliters of the amino acid mixture, and provides both amino acid composition profiles and d/l ratios for ∼11 amino acids.
Authors:
Mehdi Moini; Kathryn Klauenberg; Mary Ballard
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-13
Journal Detail:
Title:  Analytical chemistry     Volume:  -     ISSN:  1520-6882     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370536     Medline TA:  Anal Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Museum Conservation Institute, Smithsonian Institution , 4210 Silver Hill Road, Suitland, Maryland 20746-2863, United States.
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