흑색볼펜 잉크성분 중 Phenoxyethanol 분석에 의한 작성시기 추정
Estimation on the Age of Ink Writing by Analyzing of Phenoxyethanol in Black Ballpoint Inks
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흑색볼펜 잉크의 작성시기 추정에서 phenoxyethanol(PE)은 흑색볼펜 잉크의 80% 이상에서 검출되기 때문에 검출량을 토대로 작성시기 추정에 널리 활용되고 있다. 1점 플러그(plug)의 잉크에 함유된 PE를 3회에 걸쳐 순차적으로 100oC에서 30분간 가열하여 추출한 결과, 첫 번째 추출에서 최근(3개월 이내)에 작성된 잉크에서는 비교적 많은 양의 PE(평균: 6.86~27.09 ng)가 검출되었으며, 4개월 이상경과된 잉크에서는 적은 양(평균: 0.48~3.39 ng)이 검출되었다. 두 번째 및 세 번째 추출에서는 모든 잉크에서 적은 양의 PE(평균: 0.23~4.87 ng)가 검출되었다. PE의 상대적인 추출량 값인, ratio 1(첫 번째추출/세 번째 추출)과 ratio 2(두 번째 추출/세 번째 추출)의 값을 이용한 산점도, 수형도 및 95% 신뢰구간에서 작성시기가 3개월 이하의 볼펜잉크와 10개월 이상 된 볼펜잉크는 제한적이지만 구분이 가능한 것으로 나타났다.
Abstract
To estimate the age of ink on questioned documents, phenoxyethanol (PE) is employed widely as it is found in more than 80% of black ballpoint inks. Thermal analyses of PE in a plug of ink by three sequential extractions at 100oC for 30 minutes revealed that fresh inks, less than 3 months old, released a relatively high amount of PE (average: 6.86~27.09 ng), but a small amount (average: 0.48~3.39 ng) in the inks of over 4 months old in the first extraction. A small amount (average: 0.23~4.87 ng) of PE was obtained in all inks in the second and the third extractions. Scatter plot, dendrogram and 95% confidence interval of ratio 1 and ratio 2 showed that fresh inks of less than 3 months partially can be discriminated from the aged inks of over 10 months.
참고문헌 (26)
- RL Brunelle, "Ink dating-the state of the art", J Forensic Sci, 37, pp.113~124 (1992)
- AA Cantu, "A sketch of analytical methods for document dating. Part I. The static approach: determining age independent analytical profiles", Int J Forensic Document Exam, 1, pp.40~51 (1995)
- AA Cantu, "A Sketch of analytical methods for document dating. Part II. The dynamic approach:determining age dependent analytical profiles", Int J Forensic Document Exam, 2, pp.192~208 (1996)
- JH BÜgler, "Age determination of ballpoint pen ink by thermal desorption and gas chromatography-mass spectrometry", J Forensic Sci, 53, pp.982~988 (2008)
- M Ezcurra, "Analytical methods for dating modern writing instrument inks on paper", Forensic Sci Int, 197, pp.1~20 (2010)
- A Koenig, "A comparative study of ballpoint ink ageing parameters using GC", MS, 2015, pp.252, 93~106
- 최미정, "흑색 볼펜 잉크의 작성시기에 관한 연구", 과학수사학회지, 5(2), pp.111~122 (2011), 한국과학수사학회
- C Weyermann, "A study of the drying of ballpoint pen ink on paper by GC", MS, 2007, pp.168, 119~127
- AA Cantu, "On the relative aging of ink-the solvent extraction technique", J Forensic Sci, 32, pp.1151~1174 (1987)
- AA Cantu, "Comments on the accelerated aging of ink", J Forensic Sci, 33, pp.744~750 (1988)
- RL Brunelle, "Determining the relative age of ballpoint inks using a single-solvent extraction technique", J Forensic Sci, 32, pp.1511~1521 (1987)
- RL Brunelle, "Determining the relative age of ballpoint ink using a single-solvent extraction, mass-independent approach", J Forensic Sci, 34, pp.1166~1182 (1989)
- VN Aginsky, "Measuring ink extractability as a function of age-why the relative aging approach is unreliable and why it is more correct to measure ink volatile components than dyes", Int J Forensic Document Exam, 4, pp.214~230 (1998)
- T Andermann, "Solvent extraction techniques-possibilities for dating ballpoint pen inks", Int J Forensic Document Exam, 4, pp.231~239 (1998)
- VN Aginsky, "Some new ideas for dating ballpoint inks-a feasibility study", J Forensic Sci, 38, pp.1134~1150 (1993)
- LF Stewart, "Ballpoint ink age determination by volatile component comparison-a preliminary study", J Forensic Sci, 30, pp.405~411 (1985)
- S Lociciro, "Dynamic of the ageing of ballpoint pen inks: quantification of phenoxyethanol by GC-MS", Sci Justice, 44, pp.165~171 (2004)
- VN Aginsky, "Dating and characterizing writing, stamp, pad, and jet printer inks by gas chromatography", mass spectrometry, 1996, pp.2(2), 103~115
- JN Miller, "Statistics and Chemometrics for Analytical Chemistry" (2005), Pearson Education Limited
- BS Lindblom, "Pens and Pencils, Scientific Examination of Questioned Documents", pp.147~158 (2006), CRC Press
- VN Aginsky, "Determination of the age of ballpoint pen ink by gas and densitometric thin-layer chromatography", J Chromatogr A, 678, pp.119~125 (1994)
- 최미정, "흑색 볼펜 획에서 Phenoxyethanol 분석", 과학수사학회지, 5(1), pp.37~44 (2011), 한국과학수사학회
- VN Aginsky, "Accelerated aging-its use in methods for dating ink", Int J Forensic Document Exam, 2(3), pp.179~181 (1996)
- VN. Aginsky, "Dating and characterizing writing, stamp, pad, and jet printer inks by gas chromatography", mass spectrometry, 1996, 103~116
- JH BÜgler, "Characterization of ballpoint pen inks by thermal desorption and gas chromatography-mass spectrometry", J Forensic Sci, 50(5), pp.1209~1214 (2005)
- DA Hickman, "Elemental analysis and the discrimination of sheet glass samples", Forensic Sci Intl, 23, pp.213~223 (1983)