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Journal of University of Chinese Academy of Sciences ›› 2014, Vol. 31 ›› Issue (5): 595-603.DOI: 10.7523/j.issn.2095-6134.2014.05.004

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Discrimination of blue ballpoint pen inks using multiwavelength data of HPLC-DAD

SU Jiali1, ZHONG Shangwei1, XU Jing2, LI Xiangjun1, ZOU Hong2   

  1. 1. College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
    2. Department of Chemistry, Capital Normal University, Beijing 100048, China
  • Received:2013-10-19 Revised:2013-12-10 Online:2014-09-15
  • Supported by:

    Supported by National Basic Research Program of China (2011CB302400) and National Natural Science Foundation of China(11301509)

Abstract:

In this paper, multiwavelength data of HPLC-DAD were used to discriminate different brands of blue ballpoint pen ink. Dyes from inks of sixty-eight blue ballpoint pens were analyzed by using HPLC-DAD. Dye components detected in the inks were further identified by using HPLC-mass spectrometry (HPLC-MS). All the inks were firstly classified into nine groups according to the presence or absence of the significant chromatographic peaks. Then the inks in the same group were further discriminated by using PCA with multiwavelength chromatographic data. The results indicated that chromatographic data extracted from three wavelengths were more potent in the discrimination as compared with a single wavelength chromatographic data. By combining the two discrimination steps, we can discriminate about 94% of blue ballpoint pens according to the brands.

Key words: blue ballpoint pen, ink discrimination, HPLC, multiwavelength data, principal components analysis

CLC Number: