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The LCGC Blog: Chromatography Technical Tips - Polar Analyte Retention and Phase Collapse
October 15th 2014Why would one want to use a mobile phase containing 100% water? Usually to wash the analyte or old mobile phase from the column (stationary phase surface) or to help retain analytes which elute quickly using mobile phases containing only very small amounts of organic solvent (usually highly polar analytes).
The LCGC Blog: Evaluating the Impact of Unconventional Oil and Gas Extraction on Groundwater
October 8th 2014Unconventional oil and gas (UOG) extraction, which includes processes such as horizontal drilling and hydraulic fracturing, has created major positive geopolitical and economic advantages for the United States.
Meat Authentication Using HPLC–MS–MS
October 6th 2014Researchers from the Institute of Food Chemistry at Westfälische Wilhelms‑Universität Münster in Germany have developed an optimized high performance liquid chromatography coupled with mass spectrometry (HPLC–MS–MS) method using multiple reaction mode (MRM) and MRM3 for detecting horse and pork in highly processed food.
Capillary Electrophoresis Applied to Cystic Fibrosis Diagnosis
October 6th 2014Scientists from CEITEC Masaryk University are collaborating with clinicians from the Department of Respiratory Diseases and TB at the University Hospital Brno (Brno, Czech Republic) to improve the diagnosis of cystic fibrosis, specifically in newborn babies. In a new study published in the Journal of Chromatography A, a new "skin wipe" sweat sampling method is presented that reduces the time required for sampling to under a minute and utilizes capillary electrophoresis (CE) to simultaneously determine chloride, sodium, and potassium ions in sweat samples.
Positive-Negative Switching LC–MS–MS for Quantification of Pesticides in Juice
October 6th 2014Liquid chromatography coupled to triple quadrupole tandem mass spectrometry (LC–MS–MS) in multiple reaction monitoring (MRM) mode is widely considered as the gold standard for pesticide analysis. In this article recent developments in LC–MS–MS technology to meet increasing regulatory demands and productivity targets in quality control and contract laboratories are explored.
