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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
Separation Science Highlights From Pittcon® 2011
Tuesday, May 10, 2011
Technical Article
Robert L. Stevenson, Ph.D.
At Pittcon® 2011, most new products appeared to be evolutionary, not revolutionary. read more
Pittcon® 2011 Exposition: New Product Introductions in Optical Spectroscopy and Mass Spectrometry
Monday, May 09, 2011
Technical Article
George M. Frame II Eileen M. Skelly Frame
Of the 979 exhibitors at Pittcon® 2011, held March 13–18 in Atlanta, GA, 115 were first-time exhibitors, and more than 200 identified themselves as having something to do with spectroscopy, from ... read more
UHPLC’s Seven Year Itch: Quo Vadis?
Tuesday, April 12, 2011
Technical Article
Robert L. Stevenson, Ph.D.
At Pittcon in 2004, Waters (Milford, MA) introduced the ACQUITY UPLC chromatograph with a 15,000-psi Pmax, and the rest of the LC world had to play an intense game of catch-up. read more
Effective UPLC Implementation
Wednesday, April 06, 2011
Technical Article
Mark Dawson
As the science of HPLC has evolved over the years, we have witnessed many changes to HPLC chemistry and instrumentation. read more
Pittcon® 2011 Editors’ Awards: A Two-Way Tie for the Gold Award
Friday, April 01, 2011
Technical Article
Jeanely Hunt, MS, MBA
Pittcon 2011 was held March 13–18, 2011 at the Georgia World Congress Center in Atlanta, GA. The exhibition displayed an assortment of laboratory products, including anything from small plastic ... read more
New Products at Pittcon® 2011
Thursday, March 10, 2011
Application Note
Jeanely Hunt, MS, MBA
The following includes some of the latest advances in laboratory instrumentation debuting at Pittcon® 2011. read more
A High-Purity Water System for Pharmaceuticals Testing
Tuesday, February 01, 2011
Application Note
Nick Armstrong
When Velesco Pharmaceutical Services needed high-purity water for research laboratories at its new facility in Plymouth, MI, it chose a water treatment system that would provide affordable HPLC-grade ... read more
Achieving Ultrahigh-Speed Analysis With LC-MS-MS
Tuesday, February 01, 2011
Technical Article
Chris Gilles
Ultrahigh-speed liquid chromatography-mass spectroscopy instruments can accelerate analysis times by at least tenfold compared to conventional LC-MS-MS systems. read more
Analysis of Piperine in Peppers Using On-Line SFE-UHPLC With Photodiode Array Detection
Tuesday, February 01, 2011
Application Note
Takayuki Yamaguchi Kazutoshi Kamezawa Keijin Iwaya Yasuyo Sato Toshihiko Miyaji Masao Bounoshita David J. Tognarelli Muneo Saito
Ultrahigh-performance liquid chromatography (UHPLC) is a separation technique that utilizes columns packed with microparticles (<2 µm in diameter), as provided by the xtreme liquid chromatography (x-lc™) system (jasco corp., tokyo, japan) µm="" in="" diameter),="" as="" provided="" by="" the="" xtreme="" liquid="" chromatography="" (x-lc™)="" system="" (jasco="" corp.,="" tokyo,="">... read more
Multimycotoxin Screening and Quantitation in Beer Samples Using UHPLC and a High-Resolution and ...
Wednesday, September 01, 2010
Technical Article
Milena Zachariášová Jana Hajšlová Michal Godula
Mycotoxins are toxic secondary metabolites produced by many species of microscopic filamentary fungi occurring on field cereals including barley, which is used in the production of beer. The most ... read more
Use of UHPLC-MS to Determine Illicit Drugs
Sunday, August 01, 2010
Application Note
Guifeng Jiang
Illicit drugs are listed under five categories,namely, narcotics, stimulants, depressants, hallucinogens, and cannabis. These categories include drugs that are produced legally and prescribed 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
Ensuring the Purity of Acetonitrile During Quality Control Testing
Monday, March 01, 2010
Technical Article
Steven F. Eaton
Acetonitrile is a critical solvent for a number of important technologies. Its low viscosity and low chemical reactivity make it a popular choice as a mobile phase for liquid chromatography. It also ... read more
Ultrafast Flow Liquid Chromatography of Proteins
Monday, March 01, 2010
Technical Article
Kert Ivie
Ultrahigh-pressure liquid chromatography (UHPLC) has been applied successfully to separations of many small molecules, including peptides. Few studies have involved proteins, and these were narrowly ... read more
Capillary UHPLC Coupled with MRM-MS for Quantitative, High-Sensitivity Bioanalysis
Monday, March 01, 2010
Technical Article
Kerry Nugent Lori Ann Upton Yixin Zhu Chris Loran
Over the past 20 years, liquid chromatography-multiple reaction monitoring-mass spectrometry (LC-MRM-MS) has become the primary tool for the bioanalysis of drugs and their metabolites in physiological... read more
Environmental Applications of a UHPLC System: The Evolution of Chromatography
Monday, February 01, 2010
Technical Article
Imma Ferrer E. Michael Thurman
Ultrahigh-performance liquid chromatography (UHPLC) has brought two important innovations to LC-MS analysis. First is the use of 1.8-µm columns, which provides an increase in plate number from the 5-... read more
The Missing Link Between HPLC and UPLC Technology
Monday, February 01, 2010
Application Note
William Foley Beth Gildea Thomas E. Wheat
Having proven its performance and reliability under extremely rigorous conditions for the most demanding applications, UPLC technology has brought routine benefits to increasing numbers of scientists,... read more
Sub-2-Micron Performance With a Conventional HPLC Instrument Using 2.7-Micron Fused Core Particles
Friday, March 20, 2009
Technical Article
Thomas L. Chester
Ultrahigh-performance liquid chromatography (UHPLC) utilizes sub-2-µm-diam stationary phase particles to provide improved performance over conventional HPLC. This can be realized either in a higher ... read more
Application of UPLC Amino Acid Analysis Solution to Foods and Feeds
Sunday, February 01, 2009
Application Note
Thomas E. Wheat Hillary B. Hewitson Diane M. Diehl
Amino acid analysis has been used in the food and feed industries to verify and characterize materials and processes. The total amino acid content, as well as the proportions of growth-limiting amino ... read more