Just Chromatography Just Chromatography Chromatography and Analytical Chemistry - from history and basic principles to the latest research news. Articles
Recent applications in nanoliquid chromatography
2007-06-01 23:21:00 A review was published yesterday in “Journal of Separation Science” by a group of Italian researchers. So far all I have is abstract: Since its first introduction by Karlsson and Novotny in 1988 nano-LC has emerged as a complementary and/or competitive separation method to conventional HPLC, offering several advantages such as higher efficiency, ability ... More About: Applications , Recent , Liquid , Nano , Application
Quick and Simple C-C Link
2007-05-31 15:58:00 For those of you who are into organic synthesis. May 25th issue of Science published a paper by David R. Stuart and Keith Fagnou from University of Ottawa (Canada) - “The Catalytic Cross-Coupling of Unactivated Arenes”. They report that aromatic compounds can be coupled without having to preactivate the reactants. This method employs palladium and ... More About: Link , Quick , Simple
Lab on a ?keychain? detects nano amount of airborne pollutants
2007-05-29 20:05:00 A breakthrough patent awarded to a New Jersey Institute of Technology (NJIT) researcher will enable manufacturers to create a device to detect miniscule amounts of airborne pollutants. Using computer chip technology, Somenath Mitra, PhD, professor and chair of NJIT’s Department of Chemistry and Environmental Sciences, has developed and patented what could eventually become a ... More About: Nano , Chain , Chai , Airborne , Hain
How does High Performance Liquid Chromatography (HPLC) measures HbA1c?
2007-05-27 20:56:00 A question from Yahoo! Answers: Can anyone explain how does HPLC measures HbA1c? What exactly is HPLC? Let’s start with the last part of the question - “What exactly is HPLC?” HPLC or High Performance Liquid Chromatography in simple terms is a form of column chromatography used frequently in biochemistry and analytical chemistry to separate components ... More About: Yahoo Answers , Form
Imploding Bubbles At Work
2007-05-25 06:25:00 Scientists of the University of Twente (The Netherlands) succeed in speeding up the fluid flow in a micro channel using tiny and rapidly imploding gas bubbles that also provide a new way of mixing fluids within a lab-on-a-chip, without the need of complicated external components. The scientists led by Dr. Claus-Dieter Ohl of the ... More About: Work , Bubble , Lodi , Bubbles , Odin
Bilberry Adulteration Using Amaranth exposed by HPLC
2007-05-23 19:05:00 How many of you out there picked or even ate fresh bilberries? Probably not too many, unless you are from Northern Europe, Russia, or the Rocky Mountains of the US. The rest of us find bilberries in the form of purple capsules in dietary supplements. Bilberry is small shrub to a one foot ... More About: Expose , Tera , Pose , Mara , Amar
A glass microchip that spun controversy
2007-05-19 01:05:00 Series: Lab on a Chip and MSProteomics made fasterA glass microchip that spun controversy Shortly after I posted “Proteomics made faster” I saw another research article published on the topic. Now, Detlev Belder and colleagues at the University of Regensburg, have developed a glass microchip that directly couples electrophoretic separation techniques with the electrospray ... More About: Controversy , Glass , Micro , That , Rove
Proteomics made faster
2007-05-19 00:40:00 Series: Lab on a Chip and MSProt eomics made fasterA glass microchip that spun controversy The large-scale studies of structure and function of proteins (proteomics) are performed using a variety of analytical techniques from two-dimensional gel electrophoresis, immunoaffinity chromatography to tandem and MALDI-TOF mass spectrometry. The words “large-scale” in proteomics definition refers to the ... More About: Made , Fast , Aster
Quantum-dot-Sensitized Nanowire Solar Cell
2007-05-18 01:39:00 Yesterday “Nano Letters” released an article - “Photosensitization of ZnO Nanowires with CdSe Quantum Dots for Photovoltaic Devices” by Eray S. Aydil and et al. (DOI: 10.1021/nl070430o). I could not read the entire article because I am not a subscriber and don’t want to spend $25, but judging by the abstract the research ... More About: Solar , Cell , Wire , Solar cell
Nanoglue for jet engines
2007-05-17 23:03:00 The research group from Rensselaer Polytechnic Institute (NY) led by Ganapathiraman Ramanath was able to glue two materials together a one nanometer-high layer of polymer chains. This thin but very strong nanoglue could become a useful adhesive in computer chips and other materials devices where thicker layers wouldn’t fit. One other unique property ... More About: Engines , Nano
Single-molecule mass spectrometry
2007-05-17 05:36:00 John J. Kasianowicz from NIST and his colleagues created a 2D method for mass spectrometry capable of a single-molecule analysis based on the interaction between a nanometer-scale pore and analytes. The method is a “nano” version of Wallace Coulter patented technique that detects particles suspended in solution by driving them through a capillary which ... More About: Sing , Single , Mass , Mole
Journalist?s definition of Chromatography
2007-05-15 19:58:00 The AP released the highlights of the first day of Floyd Landis arbitration hearing in Malibu who is the first Tour de France winner in its 104-year history to be stripped of his title because he tested positive for steroids. What caught my attention and really made me laugh was The Mercury News definition ... More About: Definition , Graph , Journalist
Chromatogram on the ceiling
2007-05-14 18:23:00 Series: 135th BirthdayHappy Birthday Professor Tsvet!Chromatogram on the ceiling Imagine yourself in a rather large and almost empty room with an iron bed in the corner. Autumn. Cold. Gloomy. It has been raining for days and the roof is leaking. In the opposite corner on the ceiling the wet spot is slowly spreading; the rain ... More About: Gram
Happy Birthday Professor Tsvet!
2007-05-14 06:01:00 Series: 135th Birth day Happy Birthday Professor Tsvet!Chromatogram on the ceiling Today is 135th birthday anniversary of chromatography’s founding father Mikhail Tsvet and to celebrate his birthday I will be posting some interesting stories and facts from his life during the course of today this week. Next in series More About: Happy Birthday , Esso
Iodized Table Salt
2007-05-14 01:37:00 Today I visited my mother and as she was preparing lunch she asked me if I would like iodized or regular table salt in my soup. I went with the regular one because I never feel quite comfortable when there are artificial additives in my food. I guess it is because I have a ... More About: Salt , Table
Meditation Helps to Pay Attention
2007-05-12 06:01:00 This synopsis was written by Rachel Jones on a very interesting research work: “Mental Training Affects Distribution of Limited Brain Resources” by Richard J. Davidson and his team where their findings demonstrate that meditative training can improve performance on a novel task that requires the trained attentional abilities. So those who learn and study can ... More About: Meditation , Attention , Tent
Liquids as Future Data Storage
2007-05-11 16:25:00 The researches inadvertently discovered that they can write and erase on the surface of liquids - the method that could one day be applied to high-density data storage, making templates for etching silicon chips (photolithography) and a variety of other materials applications. Peter Licence at the University of Nottingham, UK, and his colleagues were using ... More About: Future , Storage , Data , Stor , Liquid
Agilent?s ?Lab on a Chip? HPLC/MS Video
2007-05-10 06:01:00 Almost two weeks ago there was a question regarding Nano HPLC technology that I attempted to answer and in that post I mentioned Agilent as one of the pioneers in the Nano LC field. Agilent’s “nano” workhorse is a 1200 Series HPLC-Chip /MS system, which uses microfluidics chip-based technology for nanospray LC/MS. Based ... More About: Video , S Video , Lent
Super Jacket: cleans air, kills germs and does not have to be washed
2007-05-09 22:59:00 Assistant professor Juan Hinestroza and postdoctoral researcher Hong Dong from Cornell University created two types of fabrics: one can prevent colds and flu and never needs washing, and another that destroys harmful gases and protects the wearer from smog and air pollution. The “super” fabric is made by coating ordinary cotton with silver ... More About: Jacket , Super , Have , Wash , Kill
?How could you use chromatography to prove which red car was involved in th
2007-05-08 19:25:00 This is another Q&A from Yahoo! Answers which I could not stay away from. The question was asked by “pigpigletpoker” and has already received two answers. More About: Yahoo Answers , Rove , Graph , Prove , Red Car
Yahoo Q&A: ?What is the peak width in Chromatography??
2007-05-08 15:37:00 This question was asked today by “Rambabu26 d” and it has been answered by three chromatography wizards. Bullfrog21, who gave a short but precise answer: Peak width is the distance on the graph between the two lowest points on either side of the peak. […] A second answer came from, T0bl3rone who assumed that the question ... More About: Yahoo , Graph , Yahoo! , The Peak
CSI?s New Tool: Forensic Analysis of Gel Pens
2007-05-08 04:41:00 Here is another example of forensic application of HPLC that allows to classify and date the black gel pen ink entries on documents. Gel pens first came out in 1984 in Japan and quickly became popular throughout the world due to their solid line, bold colors, and low cost. They are also regarded as environmentally ... More About: Analysis , Tool , Pens , Fore , Forensic
Non-destructive Method To Detect Forgery
2007-05-07 02:59:00 Forensic analysis of inks by imaging desorption electrospray ionization (DESI) mass spectrometry More About: Forgery , Forge , Method
Nano Light Bulbs for Your Shirt
2007-05-05 16:30:00 Researchers at Cornell University have created a so-called Nano -Lamp ? a microscopic collection of light-emitting fibers with dimensions of only a few hundred nanometers. The fibers are made of a polymer spiked with ruthenium molecules in a process dubbed 'electrospinning More About: Shirt , Light , Light Bulb , Bulbs
Nano Light Bulbs for Your Shirt
2007-05-05 16:30:00 Every day scientists continue to surprises us with the new discoveries; however, the most noted and admired by the vast majority of folks as well as science professionals are the achievements and developments in the field of nanotechnology. We all get easily amused when we see the next “nano” research headline because the “nanotech ... More About: Shirt , Light , Nano , Light Bulb , Bulbs
Yahoo Answers: What chemicals can be detected using a Gas Chromatography?
2007-05-04 06:06:00 What chemicals can be detected using a Gas Chromatography? There are actually two types of Gas Chromatography - Gas-Solid and Gas-Liquid depending on the kind of column is used More About: Yahoo , Answers , Yahoo Answers , Chemicals , Graph
Yahoo Answers: What chemicals can be detected using a Gas Chromatography?
2007-05-04 06:06:00 Today there was another question about chromatography on “Yahoo ! Answers ” from naisy428: What chemicals can be detected using a Gas Chromatography? Here is my very short, simplified answer. There are actually two types of Gas Chromatography - Gas-Solid and Gas-Liquid depending on the kind of column is used: GSC (Gas-Solid Chromatography) allows to separate and hence detect ... More About: Yahoo Answers , Chemicals , Sing
Soy Milk, Good or Bad? HPLC vs CZE - Part 2
2007-05-03 15:07:00 The HPLC method used a C8 column and the potassium chloride in aqueous acetic acid as a mobile phase with a linear gradient. The retention time was a bit over 20 min and the identity of the peak was confirmed as furosine by MS (mass spectrometry). More About: Milk , Part , Good
Soy Milk, Good or Bad? HPLC vs CZE - Part 2
2007-05-03 15:07:00 Continued from “Soy Milk , Good or Bad? HPLC can tell - Part 1” In their experiments, the scientists used a number of soy drinks from local stores: 8 soy milks 3 flavored soy drinks 2 soy drinks with added cereals 1 instant powdered soy drink 1 powdered soy shake They also analyzed regular cow’s milk with added soy isoflavones. Sample ...
Soy Milk, Good or Bad? HPLC can tell - Part 1
More articles from this author:2007-05-02 06:52:00 During the heating process carbonyl groups of sugars react with amino groups of amino acids and peptides forming a variety of products. The products of this, so-called, Maillard reaction contribute to flavor, aroma, and color of soy milk. More About: Milk , Part , Good , Tell 1, 2, 3 |
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