Archives | American Laboratory

Filter

Hide Filter

Sort

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
Unlocking the Secrets of Automation in the Pharmaceutical Laboratory
Monday, October 27, 2008
Technical Article
Abe Kassis Tarun Patel Kevin Bynum Roy Paul
A brief discussion about dissolution is important to understand the relevance of automation to this field. read more
Performance-Verified High-Speed LC: Assessing the Capabilities of a Flexible System for STM-LC and ...
Wednesday, March 01, 2006
Technical Article
Michael Frank Angelika Gratzfeld-Huesgen Stefan Schuette
Analytical laboratories are increasingly challenged to improve data quality and increase sample throughput. read more
Optimizing the Sensitivity of an Evaporative Light Scattering Detector
Tuesday, October 12, 2004
Application Note
Peter Froehlich Rodolphe Pennanec
The evaporative light scattering detector (ELSD) is a universal, mass-based detector for HPLC, ultraperformance liquid chromatography (UPLC), gel permeation chromatography (GPC), and supercritical ... read more