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  • Sample Cleanup for the Analysis of Pesticide Residues and Polynuclear Aromatic Hydrocarbons in Fatty...

    Tuesday, April 05, 2016
    Application Note
    Katherine K. Stenerson Michael Ye Olga Shimelis Emily Barrey Michael Halpenny
    Concern about pesticide residues and polynuclear aromatic hydrocarbons (PAHs) in food has led to the regulation of maximum contaminant levels, and highlighted the need for more sensitive and selective... read more

  • The Importance of Monodisperse Silica in the Evolution of UHPLC and HPLC Column Performance

    Tuesday, March 10, 2015
    Application Note
    Richard A. Henry Paul Ross William R. Betz Gaurang Parmar Wayne K. Way
    There is growing interest in the use of monodisperse particle-size distribution or PSD (here defined as having 10% RSD or less) to prepare modern HPLC columns because good correlation has been ... read more

  • Sample Processing at Pittcon® 2014

    Tuesday, May 06, 2014
    Application Note
    Robert L. Stevenson, Ph.D.
    The tenfold increase in speed for the analytics (GC, HPLC, and SFC [supercritical fluid chromatography], all with MS) over the last decade has shifted the choke point in many workflows from analytics ... read more

  • How Solid-Phase Extraction Affects Challenges in Bioanalysis

    Wednesday, February 05, 2014
    Application Note
    Mike Oliver Tim Liddicoat Ken Meadows
    Modern bioanalytical laboratories are tasked with providing high-quality analytical results from complex biological samples in a high-throughput environment. These needs have to be balanced with the ... read more

  • 37th International Symposium on Capillary Chromatography

    Tuesday, July 02, 2013
    Technical Article
    Robert L. Stevenson, Ph.D.
    Capillary chromatography is in the mainstream of the technical evolution of chromatography, driven primarily by improvements in column technology that generally precede the development of the ... read more

  • Exhibition of Chromatography Columns at Pittcon® 2013

    Friday, May 10, 2013
    Technical Article
    Robert L. Stevenson, Ph.D.
    The technology and market for liquid chromatography columns continue to mature, with applications-specific columns on the rise. The chromatography columns target specific assays in the clinical ... read more

  • Sample Prep for LC, GC, and SFC at Pittcon® 2013

    Friday, May 10, 2013
    Technical Article
    Robert L. Stevenson, Ph.D.
    At Pittcon® 2013, sample prep stood out as a major focus, perhaps because of the few advances in chromatography instrumentation. In addition, some sample preparation is spilling over into other ... read more

  • Product Intelligence: Solid Phase Extraction Systems

    Monday, February 25, 2013
    Technical Article
    Solid phase extraction, or SPE, is used to isolate pollutants in water and pesticides in food, isolate drugs in blood and tissue samples, and separate proteins from a mixture, among other applications... read more

  • New Instrumentation and Applications at HPLC 2012

    Friday, August 10, 2012
    Technical Article
    Robert L. Stevenson, Ph.D.
    A marketplace is usually dynamic, with a cross-current of disparate interests meeting to find mutual satisfaction. read more

  • Person-Portable GC-MS for Rapid On-Site Environmental Screening of Contaminants in Drinking Water

    Tuesday, July 31, 2012
    Application Note
    Tiffany C. Wirth Jakob B. Later Joseph L. Oliphant Edgar D. Lee Douglas W. Later
    Trihalomethanes (THMs) are formed when chlorine and other disinfectants are used to clean drinking water. At certain concentrations they are considered an environmental pollutant and are carcinogenic.... read more

  • Advances in Liquid Phase Separation at Pittcon® 2012

    Monday, May 07, 2012
    Technical Article
    Robert L. Stevenson, Ph.D.
    Eight years have passed since Waters introduced the ACQUITY UPLC®. This is a long life cycle for a groundbreaking instrument. read more

  • The Latest Trend in LC Analysis: UHPLC Core–Shell Particles

    Tuesday, March 06, 2012
    Technical Article
    Carl Sanchez Tivadar Farkas
    Since the introduction of ultrahigh-performance liquid chromatography (UHPLC) in 2004, one of the most significant technological advancements has been the introduction of core–shell columns. 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

  • Identification of Volatile and Semivolatile Organic Compounds in Salt Lake Brine

    Thursday, September 01, 2011
    Technical Article
    Qianqian Song Bin Xu Xinning Li Wu Li Guimin Qian
    The deposited salts and brine from salt lakes are important industrial resources for many kinds of salts, such as edible salt, potassium, boron, lithium, and a few heavy metals. read more

  • Highlights From Joint Congress 2011: One Era Ends in Disappointment and Another Begins*

    Tuesday, August 02, 2011
    Technical Article
    Robert L. Stevenson, Ph.D.
    In an opening plenary, Prof. Barry Karger of the Barnett Institute of Chemical and Biological Analysis concisely defined analytical chemistry as “The science of generating relevant information by ... read more

  • Simultaneous Determination of Hormone Residues in Aquatic Products by UPLC-ESI-MS-MS

    Tuesday, June 01, 2010
    Technical Article
    Ying Jiang Xu Xiu Hui Tian Xiu Zhen Zhang Xiang Hong Gong Shi Juan Zhang Hui Hui Liu Li Min Zhang
    Hormones, such as androgens (AS), estrogens (ES), and progestogens (PS), play an important role in organisms. AS, the main male sex steroids,which are the critical factors responsible for the ... 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

  • Multicapillary Columns for Chromatography

    Tuesday, March 01, 2005
    Technical Article
    Yuri P. Belov Marina M. Ulyanova Vladimir N. Sidelnikov
    The principles and theory of high-speed capillary chromatography have been known since the 1960s. To realize the maximum speed capabilities, it is necessary to use capillaries with a diameter of ... read more

  • Rapid Testing of Toxic Chemicals

    Tuesday, March 01, 2005
    Application Note
    Nathalie Boucher Lucie Lorrain Marie-Eve Rouette Elisabeth Perron Nancy Déziel Louis Tessier François Bellemare
    The measurement of chlorophyll fluorescent signals from photosynthetic enzyme complexes (PEC) has becomeone of the most powerful indicators for ecophysiologists. read more

  • Miniaturized FTIR for Maximized Productivity

    Tuesday, March 01, 2005
    Application Note
    Ken Fredeen John S. Seelenbinder Mark L. Norman
    In today’s fast-paced business environment, many companies are under pressure to improve their productivity. This is especially true in the pharmaceutical industry, where reducing time-to-market ... read more
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