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Quick screening of crystal methamphetamine/methyl sulfone exhibits by Raman spectroscopy

Date: Jul 5, 2010

Author:

The rapid identification of mixtures of crystal meth by Raman spectroscopy without the need for a separation technique is discussed as an alternative to GC/MS.

Read More thumbnail image: Quick screening of crystal methamphetaminemethyl sulfone exhibits by Raman spectroscopy

Gold wrinkles boost SERS

Date: Jul 1, 2010

Author: David Bradley

Polydimethylsiloxane can be used to produce wrinkles on a glass surface to pattern lines of gold which are twice as effective as conventional SERS substrates, according to German and Spanish researchers.

Read More thumbnail image: Gold wrinkles boost SERS

Tentative differentiation between Iznik tiles and copies with Raman spectroscopy using both laboratory and portable instruments

Date: Jun 7, 2010

Author:

Iznik tiles dated from the 16th century, copies of tiles and pottery of Theodore Deck from the 19th century, and also tiles without any information on their origin were analyzed with both laboratory and portable Raman instruments.

Read More thumbnail image: Tentative differentiation between Iznik tiles and copies with Raman spectroscopy using both laboratory and portable instruments

Volcanic spectroscopy

Date: Jun 1, 2010

Author: David Bradley

Italian researchers have used salver of techniques, including microscopic Raman and Fourier transform infrared (FTIR) spectroscopies, X-ray diffraction and scanning electron microscopy-energy dispersive X-ray to study powdered pigments found in bowls from the Pompeii archaeological site as well as wall-painting fragments from the Vesuvian region.

Read More thumbnail image: Volcanic spectroscopy

Raman spectra of organic acids obtained using a portable instrument at -5 °C in a mountain area at 2000 m ASL

Date: May 3, 2010

Author:

Well-resolved Raman spectra of organic acids were successfully obtained under field conditions using a portable Raman instrument under low-temperature atmospheric conditions at an altitude of 2000 m.

Read More thumbnail image: Raman spectra of organic acids obtained using a portable instrument at -5 C in a mountain area at 2000 m ASL

Microbial Raman

Date: May 1, 2010

Author: David Bradley

Surface-enhanced Raman scattering (SERS) can be used in a new microarray approach to microbial detection that is label-free, according to researchers writing in the April issue of the journal Analytical Chemistry.

Read More thumbnail image: Microbial Raman

Molecular effects of high-pressure processing on food studied by resonance Raman

Date: Apr 5, 2010

Author:

The color changes of poultry, pork, and smoked salmon following high-pressure processing were studied using the CIE L*, a*, b* system and resonance Raman spectroscopy.

Read More thumbnail image: Molecular effects of high-pressure processing on food studied by resonance Raman

Muscling in on the mussels' grip

Date: Apr 1, 2010

Author: David Bradley

In situ Raman spectroscopy has been used to probe the chemical composition of the cuticle of a bivalve mollusc to help explain how mussels keep such a strong grip on rocky shorelines.

Read More thumbnail image: Muscling in on the mussels grip

Surface-enhanced Raman spectroscopy (SERS) on silver colloids for the identification of ancient textile dyes: Tyrian purple and madder

Date: Mar 1, 2010

Author:

Surface-enhanced Raman spectroscopy (SERS) was used for the identification of natural organic dyes belonging to indigoid and anthraquinone classes in archeological samples.

Read More thumbnail image: Surface-enhanced Raman spectroscopy SERS on silver colloids for the identification of ancient textile dyes Tyrian purple and madder

Non-destructive spit test

Date: Mar 1, 2010

Author: David Bradley

Raman spectroscopy can identify samples of an unknown substance at a crime scene as human saliva during forensic analysis, according to a US study, the technique would preserve DNA evidence.

Read More thumbnail image: Non-destructive spit test
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