Abstract:
:In a recent technical note in this Journal, de Faria et al., 2017 [1] reported the Raman spectrum of authentic Indian yellow artists' pigment, correcting a decades old reference spectrum that has led to the misidentification of this pigment in artworks that actually contained tartrazine yellow. The present communication provides additional information and corrects important experimental details mentioned by de Faria et al. that should lead to further identifications of the authentic pigment in artworks. Despite their claim that the analysis of this naturally fluorescent colorant is only possible with Fourier transform (FT) instruments, the ready characterization of two authentic samples of historic Indian yellow pigment is demonstrated here using commonly available visible and near-infrared excitation sources on a dispersive Raman microspectrometer. To highlight the importance of the proper identification of dyes and colorants, the authentication and art historical implications of previous literature reports that have misidentified Indian yellow on historic documents are more thoroughly discussed here from a forensic science point of view. The numerous modern pigments that are sold as imitation Indian yellow are addressed and analyzed, allowing the ready noninvasive detection of anachronistic colorants in attempted forgeries. Finally, this unusual pigment is positively identified for the first time using non-invasive dispersive Raman microspectroscopy on a historic object of uncertain date, a highly decorative manuscript from the Indian subcontinent.
journal_name
Forensic Sci Intjournal_title
Forensic science internationalauthors
Smith GDdoi
10.1016/j.forsciint.2017.04.013subject
Has Abstractpub_date
2017-07-01 00:00:00pages
e30-e34eissn
0379-0738issn
1872-6283pii
S0379-0738(17)30150-0journal_volume
276pub_type
杂志文章abstract::A postmortem root band (PMRB) is a distinct microscopic feature that is postulated to occur in hair remaining in the follicle during the postmortem interval [1] (Petraco et al., 1998). The scientific validity of this premise has been highlighted in two recent high-profile criminal cases involving PMRBs [2,3] (State of...
journal_title:Forensic science international
pub_type: 杂志文章
doi:10.1016/j.forsciint.2016.07.009
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abstract::The presence of Ethyl glucuronide (EtG) in hair provides a strong indication of ethanol consumption and its investigation is of interest in both clinical and forensic contexts because of the wide window of detection. However, due to the possibility of false negative results in cases of small ethanol intake or excessiv...
journal_title:Forensic science international
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doi:10.1016/j.forsciint.2019.110071
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journal_title:Forensic science international
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doi:10.1016/s0379-0738(00)00281-4
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journal_title:Forensic science international
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journal_title:Forensic science international
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abstract::The analysis of skeletal trauma is an important aspect of forensic case work. Yet most major pathology references devote limited attention to this topic. The aim of this paper is to analyze beveling in gunshot entrance wounds, from a series of 27 cases with a total of 39 wounds. Assessment was made by measuring the ex...
journal_title:Forensic science international
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doi:10.1016/s0379-0738(98)00030-9
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journal_title:Forensic science international
pub_type: 杂志文章
doi:10.1016/j.forsciint.2011.06.003
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journal_title:Forensic science international
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journal_title:Forensic science international
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journal_title:Forensic science international
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journal_title:Forensic science international
pub_type: 杂志文章
doi:10.1016/s0379-0738(99)00126-7
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doi:10.1016/j.forsciint.2012.03.002
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journal_title:Forensic science international
pub_type: 杂志文章
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journal_title:Forensic science international
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更新日期:2005-03-10 00:00:00
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