Safe and Sustainable Water Resources
May 3rd 2013The National University of Singapore Environmental Institute (NERI) and Thermo Fisher Scientific are collaborating on a project to monitor and improve water quality in Singapore. LCGC spoke to the scientists involved to find out more about the project.
Non-invasive test for the diagnosis of pancreatic cancer
May 2nd 2013A team of researchers from the Kobe University Graduate School of Medicine in Japan have developed a metabolomics-based approach to diagnose early-stage pancreatic cancer.1 The method uses gas chromatography coupled to mass spectrometry (GC?MS).
Screening by LC–MS-MS and Fast Chromatography: An Alternative Approach to Traditional Immunoassays?
May 1st 2013A new technique was developed based on liquid chromatography coupled with tandem mass spectrometry to analyze drugs that are not part of current immunoassay screening, specifically zolpidem, zopiclone, and zaleplone, or "z-drugs." This method allows for the simultaneous quantification of the z-drugs and all major benzodiazepines in human urine samples.
Soft ionization MS using GC–APCI-MS and GC–SMB-MS offers complementary identification power for the characterization of natural products, as illustrated by the identification of alkanes, sterols, long chain alcohols, and derivatized polar compounds in tobacco leaf extracts described here.
Screening by LC–MS-MS and Fast Chromatography: An Alternative Approach to Traditional Immunoassays?
May 1st 2013A new technique was developed based on liquid chromatography coupled with tandem mass spectrometry to analyze drugs that are not part of current immunoassay screening, specifically zolpidem, zopiclone, and zaleplone, or "z-drugs."
New Chromatography Columns and Accessories at Pittcon 2013 Part II
May 1st 2013This month's installment of "Column Watch" comprises Part II of our yearly report on new products introduced at Pittcon. Gas chromatography columns, sample preparation products, and hardware, accessories, and small tabletop instruments mainly for sample preparation are covered.
HPLC Analysis of Very Polar Compounds in Bioanalysis
April 30th 2013Highly polar compounds ? such as small molecule pharmaceuticals, metabolites, and biomarkers ? can be challenging to separate using traditional reversed-phase separation methods. Several alternatives are available, including hydrophilic interaction liquid chromatography (HILIC), aqueous normal phase (ANP) chromatography, and HPLC using ion-exchange, polar-embedded, or polar-endcapped columns. So which option should you choose? Joseph Pesek of San Jos? State University explains the mechanisms, advantages, and disadvantages of these approaches.