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129th General Meeting of Korean Chemical Society & Exposition A study on Forensic Questioned Document Dating through GC/MS analysis of 2-Phenoxyethanol in black ballpoint pen ink

Submission Date :
2 / 28 / 2022 , 16 : 17 : 23
Abstract Number :
Presenting Type:
Poster Presentation
Presenting Area :
Analytical Chemistry
Authors :
SangJae Oh, Seung-Jin Ryu1,*
Korean National Police University, Korea
1Department of Law,Forensic Science Research Center, Korean National Police University, Korea
Assigned Code :
ANAL.P-340 Assigend Code Guideline
Presenting Time :
April 14 (THU) 11:00~13:00
In order to analyze the dating of the Questioned Document, 2-Phenoxyethanol in black ballpoint pen ink was selected as an indicator and analyzed as GC/MS equipped with polar column. Black ballpoint pen samples prepared from 1 month to 20 months ago were collected using micro-punch, heated, extracted with a solvent(methanol), and analyzed, and m-cresol was used as the internal standard material. The result showed a tendency to decrease in detection as the time of writing the black ballpoint pen samples old. The amount of detection was calculated in various ratios, but in samples with a time of 3 months or more, it was difficult to specify the time of writing. It is expected that this can be improved by increasing the discrimination power of each sample through the improvement of the pretreatment method of the sample.