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      FIGURES OF MERIT EVALUATION OF GC/MS METHOD FOR QUANTIFICATION OF 2-PHENOXYETHANOL FROM BALLPOINT PEN INK LINES AND DETERMINATION OF THE INFLUENCE OF SUPPORT PAPER ON SOLVENT EXTRACTION

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          Abstract

          Brazilian Forensic Scientists are frequently asked about ballpoint pen manuscripts chronology in documents suspected to be forged. In the recent years, many methods like quantification of 2-PE (2-phenoxyethanol) have been developed on this subject. The validation of these methods only recently has been a concern between scientific forensic community. Researchers studied the behavior of ink on ageing, but few of them concerned about the influence of the paper on the extraction of 2-PE. This study performed the figures of merit evaluation of the quantification of 2-PE using GC/MS, testing the main parameters involved in the reliability of the method (linearity, repeatability, limits of detection and quantification, accuracy and robustness). After, based on a full factorial design with four factors and two repetitions, the authors tested kind of paper, grammage of paper, ink color and three ink ages, to verify the paper influence on the quantity of 2-PE from ink, trough GC/MS analysis. The merit parameters evaluation showed that the method is linear, precise, accurate and robust. The results for the effect of paper showed main effects of the factors and the existence of interactions effects between the kind of paper and paper grammage, and between the kind of paper and other factors.

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          Author and article information

          Contributors
          Role: ND
          Role: ND
          Role: ND
          Journal
          qn
          Química Nova
          Quím. Nova
          Sociedade Brasileira de Química (São Paulo, SP, Brazil )
          0100-4042
          1678-7064
          January 2019
          : 42
          : 1
          : 42-48
          Affiliations
          Porto Alegre RS orgnamePolícia Federal orgdiv1Divisão Técnico-Científica do Rio Grande do Sul Brasil
          Porto Alegre RS orgnameInstituto Nacional de Ciência e Tecnologia Forense Brasil
          Porto Alegre Rio Grande do Sul orgnameUniversidade Federal do Rio Grande do Sul orgdiv1Faculdade de Farmácia Brazil
          Article
          S0100-40422019000100042
          10.21577/0100-4042.20170308

          This work is licensed under a Creative Commons Attribution 4.0 International License.

          Page count
          Figures: 0, Tables: 0, Equations: 0, References: 31, Pages: 7
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