Separation of crystal violet dyes and its application to pen ink analysis using CZE and MEKC methods

Chun Min Shih, Ju Tsung Liu, Bo Hong Chen, Cheng Huang Lin

研究成果: 雜誌貢獻文章

10 引文 斯高帕斯(Scopus)

摘要

A crystal violet (CV) standard was irradiated under a Hg-Cd lamp for different exposure times to obtain various N-demethylation products. CZE effectively separated the photodegradation products based on molecular weight differences. In contrast, micellar EKC (MEKC), using SDS as the surfactant, was ineffective because the binding constants of the demethylation products and SDS were too close for separation. Nevertheless, MEKC analysis of ink has applications in forensic science because MEKC separated neutral components in the inks. Thus, MEKC can be used to obtain an ink "fingerprint" since each ink is unique depending on the location and time it was made. In contrast, CZE is useful for dating inks because CV is the primary ink dye and it photodegrades slowly.

原文英語
頁(從 - 到)893-897
頁數5
期刊Journal of Separation Science
31
發行號5
DOIs
出版狀態已發佈 - 2008 三月 1

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

指紋 深入研究「Separation of crystal violet dyes and its application to pen ink analysis using CZE and MEKC methods」主題。共同形成了獨特的指紋。

  • 引用此