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  • Analysis of Protosappanin B in Sappan Lignum by Capillary Zone Electrophoresis

    Tuesday, September 23, 2014
    Application Note
    Luzhi Sui Xiangqian Hou Xinmin Li Dunqing Wang
    Sappan Lignum, the dried heartwood of Caesalpinia sappan L, has been used as an herbal medicine since ancient times. Sappan Lignum promotes blood circulation; removes blood stasis; reduces swelling, ... read more

  • Optimizing HPLC Sample Preparation

    Monday, February 06, 2012
    Technical Article
    Caitlin Smith
    Sample preparation is an important component for analysis in high-performance liquid chromatography (HPLC)/ultra high-performance liquid chromatography (UHPLC). This article outlines commonly used ... read more

  • Hyphenation: The Next Step in Thermal Analysis

    Friday, January 01, 2010
    Technical Article
    Kevin P. Menard Richard Spragg Greg Johnson Craig Sellman
    Thermal analysis, like most mature technologies, sees mostly incremental increases in its capabilities, such as the introduction of modulated temperature techniques in the early 1990s or the ... read more

  • Statistics in Analytical Chemistry: Part 28—Statistically Derived Detection Limits

    Friday, December 28, 2007
    Technical Article
    David Coleman Lynn Vanatta
    In the previous article (Part 27, American Laboratory, Sept 2007), the world of detection was shown to revolve around three variables: 1) the detection limit, 2) the probability of false positives, a,... read more
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