A few days ago I noticed that my taste was disturbed: no matter what I eat or drink I feel the bitter taste in my mouth. This bitter, metallic taste appears within seconds of chewing and it affects everything I eat even sweets! Initially I thought I was having a very serious health problem until […]

Gas Chromatography (GC) is one of the primary analytical techniques used in every CSI laboratory.

Researchers understand heat transfer on the scales of individual molecules and in solids, but there is still much to learn about the physics of heat transfer in just a few molecules that will be used in nanometer-scale electronics. Zhaohui Wang and coauthors used a laser pulse to heat a gold substrate onto which a self-assembled monolayer of long-chain hydrocarbon molecules had been formed.

In theory, the analyte sensitivity increases on decreasing the column inner diameter.

Research scientists from Schering-Plough Research Institute developed a rapid high-performance liquid chromatography (HPLC) technique that allows for efficient separation and analysis of pharmaceutical compounds. The method uses a short column packed with 2.7μm “fused-core” silica particles that are made by fusing a 0.5μm layer of porous silica onto a solid silica particle[1]. These unique particles […]

Folks from India extracted 99.6% pure eicosapentaenoic acid (EPA) using silver ion (argentation) column chromatography from hydrolyzed sardine oil. The individual fatty acids were determined as fatty acid methyl esters (FAME) by gas-liquid chromatography and gas chromatography-mass spectroscopy as FAME and N-acyl pyrrolidides.

Choosing the right column is key in Gas Chromatography. “Columns for Gas Chromatography: Performance and Selection” is a new hands-on reference for scientists and technicians working with packed column and capillary column gas chromatography. The authors Eugene F. Barry (University of Massachusetts Lowell) and Robert L. Grob (Villanova University) discuss the development, performance, selection, and […]

The biological cell is basically a miniature factory, which contains a large collection of dedicated protein machines. In a Review, Martin van den Heuvel and Cees Dekker look at recent progress in using some of these proteins to move, manipulate or power artificial, nanoscale devices.

I am continuing the series dedicated to the chromatography‘s founder Mikhail Tsvet. So, in 1897 he moves to Russia from Switzerland, and here is his first impression of Russia: “…during the first six months that I have been in Russia, in vain, I have been trying to force myself to feel that I have a […]

Today I studied my blog’s statistics to see what keywords people use to search in Google and Yahoo! to get to the pages of my site. Here is what I found based on the last 60 days of statistics: People used 1966 various search terms The top 20 keywords are: Then I looked at the […]