News tagged with chromatography
The electronic nose knows when your cantaloupe is ripe
Have you ever been disappointed by a cantaloupe from the grocery store? Too ripe? Not ripe enough? Luckily for you, researchers from the University of California, Davis might have found a way to make imperfectly ...
Chemistry / Analytical Chemistry
Mar 30, 2012 |
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Study reveals unprecedented impact of Deepwater Horizon on deep ocean
Scientists report they have "compelling evidence" that the Deepwater Horizon oil spill has impacted deep-sea corals. Their study, published today in the journal Proceedings of the National Academy of Sciences utiliz ...
Mar 26, 2012 |
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Forensic research extends detection of cyanide poisoning
Researchers have found a new biomarker for cyanide poisoning, which may extend its detection window in death investigations by weeks if not months.
Chemistry / Analytical Chemistry
Feb 01, 2012 |
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12 new flavonoids discovered in Kew tree
Scientists at Kew interested in the classification of legumes have been studying the chemistry of the Kentucky yellow-wood (Cladrastis kentukea). Evidence from DNA sequencing suggested that this species is ...
Jan 10, 2012 |
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Cockroach 'let's hook up' chemical signal could benefit endangered woodpecker
A North Carolina State University discovery of the unique chemical composition of a cockroach signal -- a "Let's hook up" sex pheromone emitted by certain female wood cockroaches to entice potential mates ...
Dec 19, 2011 |
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Archeologists discover Egyptian mummies styled with fatty hair gel
(PhysOrg.com) -- While it has long been known that the ancient Egyptians prettied up those deemed worthy of mummification, not so clear was what was done for the hair. Now, archeologist s working out of the KNH Centre for ...
Other Sciences / Archaeology & Fossils
Aug 23, 2011 |
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Purifying proteins: Researchers use NMR to improve drug development
The purification of drug components is a large hurdle facing modern drug development. This is particularly true of drugs that utilize proteins, which are notoriously difficult to separate from other potentially ...
Sep 29, 2010 |
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First discovery of bilirubin in a flower announced
A research team led by Cary Pirone from the Department of Biological Sciences at Florida International University has identified bilirubin in the popular Bird of Paradise plant. The breakthrough study, published ...
Sep 08, 2010 |
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The future of drug development
John Engen, associate professor of chemistry and chemical biology at the Northeastern University, is at the forefront of research that will advance drug discovery and development by making it easier to analyze ...
Sep 03, 2010 |
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Disposable cortisol biosensor developed
(PhysOrg.com) -- Scientists in the US have developed a disposable, non-invasive new biosensor to monitor levels of the stress hormone, cortisol, and say the ultrasensitive electrochemical impedance technique ...
Chemistry / Analytical Chemistry
Jul 02, 2010 |
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Science uncovers the hidden secrets of world-famous paintings
(PhysOrg.com) -- The hidden secrets of some of the world's most famous paintings have been revealed thanks to a partnership between EPSRC (Engineering and Physical Sciences Research Council) and the UK National ...
Chemistry / Analytical Chemistry
Jun 25, 2010 |
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Chemical snapshot: Murchison meteorite reveals diversity of early Solar System
(PhysOrg.com) -- New studies of a meteorite that crashed to Earth four decades ago have found it probably contains millions of organic compounds. The findings shed light on the molecular complexity that existed ...
Space & Earth / Space Exploration
Feb 17, 2010 |
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Bacteria Are Better Gene Packers Than We Thought
(PhysOrg.com) -- In microbial genomes, genes are typically depicted as linear series of separate regulatory and coding regions. This leads to the assumption that annotations done by computer to predict such ...
Feb 12, 2010 |
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What makes stem cells tick?
Investigators at the Burnham Institute for Medical Research (Burnham) and The Scripps Research Institute (TSRI) have made the first comparative, large-scale phosphoproteomic analysis of human embryonic stem cells (hESCs) ...
Aug 06, 2009 |
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Sweet deception: New test distinguishes impure honey from the real thing
Here's some sweet news for honey lovers: Researchers in France are reporting development of a simple test for distinguishing 100 percent natural honeys from adulterated or impure versions that they say are ...
May 07, 2009 |
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Chromatography
Chromatography (from Greek χρῶμα chroma "color" and γράφειν graphein "to write") is the collective term for a set of laboratory techniques for the separation of mixtures. The mixture is dissolved in a fluid called the "mobile phase", which carries it through a structure holding another material called the "stationary phase". The various constituents of the mixture travel at different speeds, causing them to separate. The separation is based on differential partitioning between the mobile and stationary phases. Subtle differences in a compound's partition coefficient result in differential retention on the stationary phase and thus changing the separation.
Chromatography may be preparative or analytical. The purpose of preparative chromatography is to separate the components of a mixture for further use (and is thus a form of purification). Analytical chromatography is done normally with smaller amounts of material and is for measuring the relative proportions of analytes in a mixture. The two are not mutually exclusive.
For more information about Chromatography, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
