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Biosensor Simplifies DNA, Biomarker Detection

January 22, 2015 | by American Institute of Physics | News | Comments

A simple method to sense DNA, as well as potential biomarker proteins of cancer or other diseases such as Alzheimer’s, may soon be within reach. Scientists have created a photonic crystal nanolaser biosensor capable of detecting the adsorption of biomolecules based on the laser’s wavelength shift.

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Hidden Details, Objects Seen in 18th Century Paintings

January 22, 2015 9:00 am | by Agencia ID | News | Comments

A multidisciplinary research team has studied two paintings in the side altar of the parish of Our Lady of the Immaculate Conception in Purisima del Rincon, Guanajuato in Mexico, by the artist Hermenegildo Bustos. The paintings contain three overpainted layers with a number of unregistered modifications hidden from view.

Busted: There are Spectroscopy Rules for Rattling Hydrogen

January 22, 2015 9:00 am | by New York Univ. | News | Comments

It has been taken for granted for over 50 years that the type of spectroscopy widely used to study hydrogen inside materials is not subject to any selection rules. In a joint theoretical and experimental study, researchers showed that this near universally held view is incorrect for at least one important class of hydrogen-entrapping compounds by confirming experimentally the validity of the selection rule formulated in 2013.

Drugs, PPCPs May Interact With Pool Water

January 22, 2015 9:00 am | by Purdue Univ. | News | Comments

Chlorination is used primarily to prevent pathogenic microorganisms from growing. Previous research has shown that many constituents of urine including urea, uric acid and amino acids, interact with chlorine to produce potentially hazardous disinfection byproducts in swimming pools. However, chemicals from pharmaceuticals and personal care products, or PPCPs, could also be harmfully interacting with chlorine.

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Atoms Behind Exotic Property Also Sow the Seeds of its Destruction

January 22, 2015 9:00 am | by Brookhaven National Laboratory | News | Comments

The discovery of "topologically protected" electrical conductivity on the surface of some materials whose bulk interior acts as an insulator was among the most sensational advances in the last decade of condensed matter physics. Now, a new atomic-scale study of the surface properties of one of these ferromagnetic topological insulators reveals that these materials may not be what they seemed.

SAM Responsible for Mars Organic Matter Discovery

January 6, 2015 7:00 am | by Goddard Space Flight Center | News | Comments

The team responsible for the Sample Analysis at Mars (SAM) instrument suite on NASA's Curiosity rover made the first definitive detection of organic molecules on Mars using chromatography. Here's a closer look at their work and their equipment.

Wheat Gene Helps Chestnuts Resist Blight

January 6, 2015 7:00 am | by Oak Ridge National Laboratory | News | Comments

Researchers have used gas chromatography mass spectrometry to analyze chestnuts from transgenic American chestnut trees— trees that were altered with a wheat gene— and found they had an increased resistance to blight.

Research Key to Better Electrolyte for Batteries

January 6, 2015 7:00 am | by Lawrence Berkeley National Laboratory | News | Comments

The lithium-ion batteries that mobilize our electronic devices need to be improved if they are to power electric vehicles or store electrical energy for the grid. Researchers, looking for a better understanding of liquid electrolytes, found surprising results in the first X-ray absorption spectroscopy study of a model lithium electrolyte.

Researchers Study Pathway of Sunlight to Electricity

January 6, 2015 7:00 am | by Univ. of Oregon | News | Comments

Four pulses of laser light on nanoparticle photocells in a spectroscopy experiment have opened a window on how captured sunlight can be converted into electricity. The work, which potentially could inspire devices with improved efficiency in solar energy conversion, was performed on photocells that used lead-sulfide quantum dots as photoactive semiconductor material.

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Human Pollution Seriously Impacts Tree Emissions

January 6, 2015 7:00 am | by Georgia Tech | News | Comments

The southeastern U.S. is a natural laboratory for scientists studying how chemicals emitted by human activities and trees interact with each other and affect air quality and climate. A new study has found that certain emissions from cars and coal-fired power plants promote processes that transform naturally occurring emissions from trees into organic aerosols.

Physicists, Chemists Capture Electrons Moving in Silicon

December 18, 2014 7:00 am | by UC Berkeley | News | Comments

The semiconductor industry is built on the propensity of electrons in silicon to get kicked out of their atomic shells and become free. These mobile electrons are routed and switched though transistors, carrying digital information. An international team of physicists and chemists has taken snapshots of this ephemeral event using attosecond pulses of soft X-ray light lasting only a few billionths of a billionth of a second.

Tech Tracks Underwater Oxygen for Swim Performance, Muscle Repair

December 18, 2014 7:00 am | by SPIE | News | Comments

Swimmers looking to monitor and improve technique, and patients striving to heal injured muscles, now have a new light-based tool to help reach their goals. Researchers have described the first measurements of muscle oxygenation underwater and the development of the enabling technology.

Spectral Signature Lets Researchers ID Seabirds by Poop

December 18, 2014 7:00 am | by British Antarctic Survey | News | Comments

By studying the color of seabird guano in the infrared part of the spectrum, researchers were able to identify and isolate penguin and seabird poo’s unique spectral signature from bare rocks and snow. Applying this to satellite imagery, the team was able to identify all known major colonies of Adelié penguins, and colonies of several species of seabirds.

Cocaine Quadruples Sudden Death Risk

December 18, 2014 7:00 am | by UPV/EHU | News | Comments

Research has linked the increase in sudden cardiovascular death with the recent consumption of cocaine. In people in the 19-49 age bracket, this risk is quadrupled.

Chemistry Keeps You Safe During Holiday Travels

December 18, 2014 7:00 am | by The Conversation, Martin Boland | News | Comments

As the holidays draw near, many of us will hop on a plane to visit friends and family– or just get away from it all. Some will be subjected to a swab at the airport to test clothes and baggage for explosives. So how does this process work? The answer is chromatography.

Chromatography Techniques: December 2014

December 17, 2014 10:46 am | Digital Editions | Comments

The December issue of Chromatography Techniques details a mass spectrometry technique enables the detection of drugs and medical conditions from just a single drop of fluid, such as blood or urine, within minutes. Other articles include: size of future mass spec, choosing HPLC columns, soft ionization, separation of antibodies. There are also new products. 

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Using TLC to Choose an HPLC Column

December 10, 2014 11:55 am | by Fred Rabel, Owner, ChromHELP, LLC, Woodbury, N.J. | Articles | Comments

Because of the high cost of HPLC columns, there are numerous ways to find out which column(s) might best be of use for an intended but new separation. If some of the components are known, then the literature or manufacturers’ websites can be consulted. This might take some time, but the research of others can save both time and money in your own work.

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pH Gradient Speeds Separation of Antibodies

December 10, 2014 11:47 am | by Ken Cook, Frank Steiner, Mauro De Pra, Thermo Fisher Scientific, Inc. | Articles | Comments

Pre-formulated buffers for pH gradient have greatly simplified the development of ion exchange chromatography (IEX) of monoclonal antibodies (mAbs). Three features make this simplification possible.

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Soft Ionization Drives Future GCMS Technology

December 10, 2014 11:37 am | by Laura McGregor, Nick Bukowski and David Barden, Markes International, UK | Articles | Comments

Soft ionization remains a relatively underused technique for GCMS, despite its ability to provide improved confidence in the identification of a range of challenging analytes. But there is now a new approach that makes it possible to lower the energy of electron ionization to achieve soft ionization, without the disadvantages with which it has historically been associated.

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Higher Performance, Smaller Sizes Define Future Mass Spec

December 10, 2014 11:23 am | by Sarah Smith, Global Market Manager, Analytical, Bal Seal Engineering Inc., Foothill Ranch, Calif. | Articles | Comments

Mass spectrometry (MS) is the workhorse of analytical chemistry. It performs the analysis of the sample, making MS equipment an essential part of the analytical instrumentation market. A recent shift in the laboratory landscape, however, is forcing a change in the size and functionality of mass spec equipment.

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Instrument Speeds Prep of Gas Calibration Standards

December 10, 2014 8:58 am | Product Releases | Comments

UP Analytical’s GasMix is a companion to set up on-site customized preparation for single and multipoint calibration gas standards. The principle is based on the mixing and/or dilution of 2 to 12 gas standards and may be used with virtually all types of analytical instruments, with applications such as analyzer calibration and validation, odorize natural gas, synthetic gas mixture generation, glove box atmosphere control, reactor gas feeding, sample conditioning prior to analysis and more.

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