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In situ Study on the Diffusion Kinetics of Seal Ink by Microinfrared Spectroscopy
Author(s) -
Li Kaikai
Publication year - 2019
Publication title -
journal of forensic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.715
H-Index - 96
eISSN - 1556-4029
pISSN - 0022-1198
DOI - 10.1111/1556-4029.13930
Subject(s) - seal (emblem) , inkwell , diffusion , kinetics , materials science , spectroscopy , absorption (acoustics) , analytical chemistry (journal) , chemical engineering , chemistry , composite material , thermodynamics , chromatography , engineering , art , physics , visual arts , quantum mechanics
In document examination, it is of great importance to determine the composition of seal ink with different imprint times, and spectroscopic methods are widely used today. In this research, the diffusion of seal inks from three different brands on the same type of paper is monitored in situ by microinfrared spectroscopy and microinfrared imaging technology. The area of the absorption peak at 1743 cm −1 gradually decreases with increasing diffusion time. The diffusion kinetics of seal ink on paper are also studied by analyzing the infrared spectra of seal inks at the same measuring point with different diffusion times. The research provides a basic study in understanding the diffusion behavior of seal ink on paper over short time spans.