Single-Compound Isotopic Analysis of Organic Materials in Archaeology
June 1st 2004Isotopic analysis of archaeological materials provides information on age and source, but analysis of single compounds isolated from artefacts can provide more accurate measurements and additional details. In this article, the authors provide a review of chromatographic separations of archaeological biomolecules for their analysis using accelerator mass spectrometry or isotope ratio mass spectrometry. The article concentrates primarily on studies involving carbon and nitrogen.
IC–MS Determination of Ionic Compounds in Toothpaste
March 1st 2004A fast and easy-to-use method for the identifcation and determination of active anionic ingredients in toothpaste is presented using ion chromatography in combination with electrospray mass spectrometry. In this application, positive identification of glycerol, sorbitol, chloride, fluoride, sulphate, monofluorophosphate and polyphospates, in addition to citrate and saccharin, is achieved in one chromatographic run with a total analysis time of 22 min.