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Analysis of PEG oligomers in black gel inks: Discrimination and ink dating

•Analysis of PEG oligomers in gel ink entries by LC–HRMS.•An effective method for discriminating carbon-based black gel ink entries.•A new approach for studying the relative ink dating of carbon-based black gel ink entries. Carbon-based black gel inks are common samples in forensic practice of quest... Full description

Journal Title: Forensic Science International August 2017, Vol.277, pp.1-9
Main Author: Sun, Qiran
Other Authors: Luo, Yiwen , Xiang, Ping , Yang, Xu , Shen, Min
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0379-0738 ; E-ISSN: 1872-6283 ; DOI: 10.1016/j.forsciint.2017.04.022
Link: http://dx.doi.org/10.1016/j.forsciint.2017.04.022
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recordid: elsevier_sdoi_10_1016_j_forsciint_2017_04_022
title: Analysis of PEG oligomers in black gel inks: Discrimination and ink dating
format: Article
creator:
  • Sun, Qiran
  • Luo, Yiwen
  • Xiang, Ping
  • Yang, Xu
  • Shen, Min
subjects:
  • Questioned Document Examination
  • Carbon-Based Black Gel Ink
  • Peg Oligomers
  • LC–Hrms
  • Discrimination
  • Ink Dating
  • Questioned Document Examination
  • Carbon-Based Black Gel Ink
  • Peg Oligomers
  • LC–Hrms
  • Discrimination
  • Ink Dating
  • Public Health
ispartof: Forensic Science International, August 2017, Vol.277, pp.1-9
description: •Analysis of PEG oligomers in gel ink entries by LC–HRMS.•An effective method for discriminating carbon-based black gel ink entries.•A new approach for studying the relative ink dating of carbon-based black gel ink entries. Carbon-based black gel inks are common samples in forensic practice of questioned document examination in China, but there are few analytical methods for this type of ink. In this study, a liquid chromatography–.high resolution mass spectrometry (LC–HRMS) method was established for the analysis of PEG oligomers in carbon-based black gel ink entries. The coupled instruments achieve both the identification and quantification of PEG oligomers in ink entries with reproducible results. Twenty carbon-based black gel inks, whose Raman spectra appeared identical, were analyzed using the LC–HRMS method. As a result, the twenty gel inks were classified into four groups according to the distribution of PEG oligomers. Artificially aging of PEG 400 and...
language: eng
source:
identifier: ISSN: 0379-0738 ; E-ISSN: 1872-6283 ; DOI: 10.1016/j.forsciint.2017.04.022
fulltext: fulltext
issn:
  • 0379-0738
  • 03790738
  • 1872-6283
  • 18726283
url: Link


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subjectQuestioned Document Examination ; Carbon-Based Black Gel Ink ; Peg Oligomers ; LC–Hrms ; Discrimination ; Ink Dating ; Questioned Document Examination ; Carbon-Based Black Gel Ink ; Peg Oligomers ; LC–Hrms ; Discrimination ; Ink Dating ; Public Health
description•Analysis of PEG oligomers in gel ink entries by LC–HRMS.•An effective method for discriminating carbon-based black gel ink entries.•A new approach for studying the relative ink dating of carbon-based black gel ink entries. Carbon-based black gel inks are common samples in forensic practice of questioned document examination in China, but there are few analytical methods for this type of ink. In this study, a liquid chromatography–.high resolution mass spectrometry (LC–HRMS) method was established for the analysis of PEG oligomers in carbon-based black gel ink entries. The coupled instruments achieve both the identification and quantification of PEG oligomers in ink entries with reproducible results. Twenty carbon-based black gel inks, whose Raman spectra appeared identical, were analyzed using the LC–HRMS method. As a result, the twenty gel inks were classified into four groups according to the distribution of PEG oligomers. Artificially aging of PEG 400 and...
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•Analysis of PEG oligomers in gel ink entries by LC–HRMS.•An effective method for discriminating carbon-based black gel ink entries.•A new approach for studying the relative ink dating of carbon-based black gel ink entries.

Carbon-based black gel inks are common samples in forensic practice of questioned document examination in China, but there are few analytical methods for this type of ink. In this study, a liquid chromatography–.high resolution mass spectrometry (LC–HRMS) method was established for the analysis of PEG oligomers in carbon-based black gel ink entries. The coupled instruments achieve both the identification and quantification of PEG oligomers in ink entries with reproducible results. Twenty carbon-based black gel inks, whose Raman spectra appeared identical, were analyzed using the LC–HRMS method. As a result, the twenty gel inks were classified into four groups according to the distribution of PEG oligomers. Artificially aging of PEG 400 and...

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•Analysis of PEG oligomers in gel ink entries by LC–HRMS.•An effective method for discriminating carbon-based black gel ink entries.•A new approach for studying the relative ink dating of carbon-based black gel ink entries.

Carbon-based black gel inks are common samples in forensic practice of questioned document examination in China, but there are few analytical methods for this type of ink. In this study, a liquid chromatography–.high resolution mass spectrometry (LC–HRMS) method was established for the analysis of PEG oligomers in carbon-based black gel ink entries. The coupled instruments achieve both the identification and quantification of PEG oligomers in ink entries with reproducible results. Twenty carbon-based black gel inks, whose Raman spectra appeared identical, were analyzed using the LC–HRMS method. As a result, the twenty gel inks were classified into four groups according to the distribution of PEG oligomers. Artificially aging of PEG 400 and...

pubElsevier B.V
doi10.1016/j.forsciint.2017.04.022
lad01Forensic Science International
date2017-08