Spectroscopy - May 2008 - (Page 20)

20 SPECTROSCOPY GLOBAL EDITION MAY 2008 long associated with Raman spectroscopy. Over the years, they have provided optics systems and high-performance cameras for end users who like to build their own instruments. This year at Pittcon, the company introduced the TriVista CRS – Confocal Raman System. The system is designed to be flexible, providing for the use of tunable lasers, while providing good laser line rejection (down to 5 cm 1 from the laser line) and extremely high stray light rejection. The system enables the user to observe and record both the Stokes and the anti-Stokes spectral data at the same time. ChemImage Corporation (Pittsburgh, Pennsylvania) has built up a reputation for spectral chemical imaging systems using different spectral imaging technologies. The company has introduced the FALCON II wide-field Raman Chemical imaging system. The system produces two-dimensional and three-dimensional molecular images, taking advantage of the company’s proprietary Multi-Conjugate Filter, liquid crystal–based technology, and providing highthroughput hyperspectral screening of materials. The FALCON II incorporates an optimized CCD-based dispersive Raman spectrometer with low noise electronics. The system can provide a spectral resolving power of better than 0.5 cm 1. The combination of the optics (diffraction limited at 250 nm) and the CI Expert software enables the system to provide spatial resolution of chemical species below 1 mm. Real-Time Analyzers (Middletown, Connecticut) is a small Connecticut-based Raman company formed a few years back by Stu Farquharson, who originated from Dow Chemical. Because of his background, the company has the name “real-time” as it pertains to the chemical process industry, and that is certainly one of the areas of focus for the company’s products. However, from the start of Real-Time Analyzers, the company has become a significant supplier of substrates for surface-enhanced Raman spectroscopy (SERS). This technique significantly enhances the sensitivity of Raman for certain analytes and is well suited to the measurements of trace amounts of these compounds in an aqueous environment. The main reason for mentioning the company here is that it introduced a portable Raman analyzer that is well suited for fieldbased Raman measurements. Unlike most current small Raman systems, this portable instrument can operate with a 1064-nm Nd:YAG laser. The measurement principle is a little different than most Raman systems, and this provides the opportunity to produce nearly fluorescence-free Raman spectra, which is important for the next application. At Pittcon, the company demonstrated the use of the analyzer for identifying anthrax and related materials. The lack of fluorescence can help this application and others involving biologically related materials. PerkinElmer (Shelton, Connecticut) has been strong in FT-IR and infrared spectroscopy since the company’s original formation back in the mid-1950s. It has helped support Raman spectroscopy development over that period, but it could be considered an in and out company rel-

Table of Contents Feed for the Digital Edition of Spectroscopy - May 2008

Spectroscopy - May 2008 Contents A Pragmatic Approach to Managing Interferences in ICP-MS Pittcon 2008: Back to New Orleans and Coffee and Beignets for Breakfast News Market Profile Calendar

Spectroscopy - May 2008

For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.