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Strategic Study of CAE >> 2007, Volume 9, Issue 2

Relative writing age analysis of the black roller pen inksby capillary zone electrophoresis

1. Chinese People Public Security University, Beijing   100038, China ;

2. Forensic Chemistry Department of China Criminal Police College, Shenyang 110035, China ;

3. Guangdong Police College, Guangzhou, 510000, China

Funding project:国家自然科学基金资助项目(70171026) Received: 2006-04-20

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Abstract

 The analytical method for roller pen inks was established by capillary zone electrophoresis.After optimizing such conditions as20mmol桙L borate buffer at pH 8.5, 100μm×40cm fused silica capillary column,separation voltage of15kV,photo diode array (PDA) detector and scanning range190~600nm were adopted in experiment.Electropherogram of different roller pen inks' extracts were obtained. The problem of relative writing age was investigated from relative changes between different dyes in inks detected by PDA in visible wavelength.

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References

[ 1 ] Vogt C ,Vogt J ,Becker A ,et al .Separation ,comparison and identification of fountain pen inks by capillary electrophoresis with UV-visible and fluorescence detection and by proton-induced X-ray emission [ J] . Journal of Chromatography A ,1991 ,781 :391 ~ 405 link1

[ 2 ] Rohde E , McManus AC , Vogt C , et al . Separation and comparison of fountain pen inks by capillary zone electrophoresis[J] .J Forensic Sci ,1997 ,42(6) :1004 ~ 1011 link1

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