The Daily Bulletin Archive

Angelica Green, a master's degree candidate in forensic science at Buffalo State, will present the literature seminar "Ink Classification Using Thin Layer and High Performance Liquid Chromatography" at 12:30 p.m. Thursday, September 18, in Classroom Building B119. Light refreshments will be served before the seminar. The Chemistry-Physics Seminar Series is supported by the Faculty-Student Association.

Abstract
Ink classification and discrimination in forensics can be beneficial for numerous reasons including forgery, authenticity, and dating of documents. There are many different materials used for writing, but ink is the most commonly used today. Ink can be broken up into four main subdivisions: liquid, printing, ballpoint, and the most uncommon, typewriter. The forensic examination of inks can be analyzed through various characteristics: color, age of writing, and chemical composition; however, chemical composition has been shown to be the most useful in the differentiation of inks. Chromatography is a highly effective analytical technique in studying the chemical composition of inks. Thin layer chromatography (TLC) and high performance liquid chromatography (HPLC) have been two important methods for analyzing and discriminating inks. This talk will present the applications of TLC and HPLC for analyzing various types of inks.