CHEMCAL DETAILS SAMPLE ORIGIN SAMPLE PREP./SIZE PYROL. CONDITIONS TOTAL ION COUNTS
SHEEP WOOL largely keratin
Fibre Institute, TNO, Delft, The Netherlands ground in glass mortar with methanol; 10 ug standard 2.4 X 105
remarks - The spectrum of sheep wool as well as of most other animal hairs, e.g. camel hair (Spectrum E.6) is completely dominated by the protein pattern of keratin (see Spectrum B.ll). This is evidenced by the extremely high peak at m/z 34 (H2S+') derived from the cystein moieties which are unusually abundant in this protein. Although m/z 34 has gone off scale, its true intensity can be conveniently judged from the intensity of the 5% isotope peak at m/z 36 (H234S+-).
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