Detection of trace ink compounds in erased handwritings using electrospray-assisted laser desorption ionization mass spectrometry

Yi Ying Kao, Sy Chyi Cheng, Chu Nian Cheng, Jentaie Shiea, Hsiu O. Ho

研究成果: 雜誌貢獻文章同行評審

12 引文 斯高帕斯(Scopus)

摘要

Writings made with erasable pens on paper surfaces can either be rubbed off with an eraser or rendered invisible by changing the temperature of the ink. However, trace ink compounds still remain in the paper fibers even after rubbing or rendering. The detection of these ink compounds from erased handwritings will be helpful in knowing the written history of the paper. In this study, electrospray-assisted laser desorption ionization/mass spectrometry was used to characterize trace ink compounds remaining in visible and invisible ink lines. The ink compounds were desorbed from the paper surface by irradiating the handwritings with a pulsed laser beam; the desorbed analytes were subsequently ionized in an electrospray plume and detected by a quadrupole time-of-flight mass spectrometry mass analyzer. Because of the high spatial resolution of the laser beam, electrospray-assisted laser desorption ionization/mass spectrometry analysis resulted in minimal damage to the sample documents.

原文英語
頁(從 - 到)445-451
頁數7
期刊Journal of Mass Spectrometry
49
發行號6
DOIs
出版狀態已發佈 - 2014

ASJC Scopus subject areas

  • Spectroscopy
  • Medicine(all)

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