Capillary Electrophoresis
Return to Library
|
Free Capillary Electrophoresis Articles |
|
|
|
|
Research from University of South Carolina broadens understanding of life sciences
2009 AUG 11 - (NewsRx.com) -- A report, 'Forensic analysis of anthraquinone, azo, and metal complex acid dyes from nylon fibers by micro-extraction and capillary electrophoresis,' is newly published data in Analytical and Bioanalytical Chemistry. "The extraction and separation of dyes present on textile fibers offers the possibility of enhanced discrimination between forensic trace fiber evidence. An automated liquid sample handling workstation was programmed to deliver varying solvent combinations to acid-dyed nylon samples, and the resulting extracts were analyzed by an ultraviolet/visible microplate reader to evaluate extraction efficiencies at different experimental conditions," scientists in the United States report. "Combinatorial experiments using three-component mixture designs varied three solvents (water, pyridine, and aqueous ammonia) and were employed at different extraction temperatures for various extraction durations. The extraction efficiency as a function of the three solvents (pyridine/ammonia/water) was modeled and used to define optimum conditions for the extraction of three subclasses of acid dyes (anthraquinone, azo, and metal complex) from nylon fibers. The capillary electrophoresis analysis of acid dye extracts is demonstrated using an electrolyte solution of 15 mM ammonium acetate in acetonitrile/water (40:60, v/v) at pH 9.3," wrote A.R. Stefan and colleagues, University of South Carolina. The researchers concluded: "Excellent separations and discriminating diode array spectra are obtained even for dyes of similar color." Stefan and colleagues published their study in Analytical and Bioanalytical Chemistry (Forensic analysis of anthraquinone, azo, and metal complex acid dyes from nylon fibers by micro-extraction and capillary electrophoresis. Analytical and Bioanalytical Chemistry, 2009;394(8):2077-85). For more information, contact A.R. Stefan, University of South Carolina, Dept. of Chemistry and Biochemistry, Columbia, SC 29208 USA.. Publisher contact information for the journal Analytical and Bioanalytical Chemistry is: Springer, 233 Spring Street, New York, NY 10013, USA. Keywords: United States, Columbia, Life Sciences, Capillary Electrophoresis, Analytical Chemistry. This article was prepared by Life Science Weekly editors from staff and other reports. Copyright 2009, Life Science Weekly via NewsRx.com.
|
