Chemical alteration patterns of ancient Egyptian papyri studied by Pyrolysis-GC/MS with in situ silylation
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DOI: 10.1016/j.jaap.2020.104967
Abstract: Abstract Analytical pyrolysis-gas chromatography coupled with mass spectrometry with in situ silylation using hexamethyldisilazane (Py(HMDS)-GC/MS) was employed to study a set of ancient Egyptian papyri. The aim was to investigate their chemical alteration patterns and… read more here.
Keywords: pyrolysis; ancient egyptian; papyri; situ silylation ... See more keywords
Chemical alteration and preservation of sedimentary/organic nitrogen isotope signatures in a 2.7 Ga seafloor volcanic sequence
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DOI: 10.1017/s1473550417000441
Abstract: Abstract Massive to lobate volcanic flows and brecciated hyaloclastite units in the Abitibi greenstone belt allow investigation of Late Archæan seafloor alteration and associated incorporation into these rocks of nitrogen (N) biogeochemical signatures. In this… read more here.
Keywords: alteration preservation; alteration; chemical alteration; preservation sedimentary ... See more keywords
Chemical alteration of 238Pu-loaded borosilicate glass under saturated leaching conditions
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DOI: 10.1515/ract-2018-3097
Abstract: Abstract Highly radioactive 238Pu-doped and non-radioactive samples of borosilicate glass with chemical compositions and synthesis routine similar to SON68 glass were studied under static saturated leaching conditions in distilled water at 90 °C. Dramatic differences… read more here.
Keywords: saturated leaching; borosilicate glass; glass; alteration ... See more keywords