Scientific Papers – The Dating Of Writing Inks Through 2-Phenoxyethanol Using Gas Chromatography – Mass Spectrometry, Advantages, Interpretation and Limitations
Chromatography is the name give to analytical chemistry techniques that involve separating components of a mixture. There are two phases to chromatography methods: a mobile phase and a stationary phase. The mobile phase can be a gas or a liquid while the stationary phase can be a liquid or solid. During the separation, the mobile phase moves past the stationary phase. The separation of a mixture is based on a component’s interaction with each of the phases. Components that interact more with the mobile phase will move more quickly. Components that interact more with the stationary phase will be slowed.
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Speckin Forensic Laboratory employ’s three document examiners, one fingerprint examiner, an ink dating chemist, two DNA consultants, one toxicologist, one arson and fire investigator, three crime scene experts, a trace evidence and impression evidence examiner, two computer forensic and cell phone examiners as well as two secretaries. Erich Speckin is our Ink Dating Expert Chemist. Our examiners are specialists not only in the area of signatures and handwriting problems, but also in alterations, additions, and the rewritings of medical and business records. We occupy 6,000 square feet of professional office space where our state-of-the-art instruments are located.