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Determination of Trace Elements in Copper by Radially Viewed ICP
Manny Almeida, Teledyne Leeman Labs
The presence of trace impurities in copper and its alloys can adversely affect the properties of finished products. The concentration of impurities must be kept under control to ensure the quality of the metal. This note demonstrates the ability of an ICP to determine trace impurities in Cu reference materials. Analytes measured: Ag, Al, As, Cd, Cr, Fe, Mg, Ni, P, Pb, Sb, Si, Sn, Mn, Co, Bi, Zn, and Te.
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EDXRF App Note: Trace Elements in Aqueous Solution
Scott Fess, Rigaku Corporation
Application Note #1011 describes quantitative analysis of trace amounts of 12 elements using the benchtop Rigaku NEX CG spectrometer in conjunction with the patented UltraCarry® sample preparation technique.
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Moxtek's ULTRA-LITE X-ray Source
Sterling Cornaby, Moxtek
Moxtek's ULTRA-LITE X-ray source is a very small self contained X-ray source (X-ray tube and high voltage power supply) for use in portable X-ray applications, such as the handheld X-ray fluorescence (XRF) spectrometers. This note demonstrates that this X-ray source has a stable and repeatable X-ray flux output over time, which is vital for the precision of the calibrated XRF measurements.
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Combining Avantes CCD Spectrophotometer and LED Radiation Source to Use as a Photochemical Reactor
Gombár Melinda, Avantes
An Avantes CCD fiber-optic spectrophotometer was used as a photoreactor by applying LEDs as external illumination sources. This approach offers a highly quantitative data collection and a well-controlled illumination, which is independent from the detecting light and could be easily adapted to a wide variety of needs.
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Raman Microspectroscoy of Plastic Explosives
Dr. Paul Martin, CRAIC Technologies, Inc.
Describe the techniques to prepare, analyze, and identify plastic explosive materials by Raman microspectroscopy.
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Integrating Spheres for Reflectance Measurements
Yvette Mattley, PhD, Ocean Optics
Integrating spheres are useful tools for measuring the reflectivity of samples with rough surfaces. This tech tip covers some of the ins and outs of integrating sphere use.
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Determination of Low Concentration Methanol in Alcohol by an Affordable High Sensitivity Raman Instrument
Duyen Nguyen and Eric Wu, Enwave Optronics, Inc.
Low concentration natural methanol exists in most alcoholic beverages and usually causes no immediate health threat. Nevertheless, it is possible to have natural occurring methanol in beverages with concentration as high as 18 g/L of ethanol; or equivalent to 0.72% methanol in 40% ethanol, in alcohol (1). Current EU regulation limits naturally occurring methanol to below 10 g/L of ethanol; or equivalent to 0.4% methanol in 40% ethanol.
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Ultrasensitive 3D Confocal Raman Imaging
WITec GmbH
Confocal Raman microscopy is an excellent tool for true 3D chemical imaging. In this application note the technique for ultrasensitive Raman imaging is highlighted along with various examples of applications.
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Long-Wavelength Dispersive 1064 nm Raman Counterfeit Detection of Rum, Shampoo, et. al.
Claire Dentinger, Eric Bergles, Lin Chandler, and William Yang, BaySpec, Inc.
Increased capability for identifying genuine versus counterfeit materials is achieved by using dispersive 1064 nm Raman analyzers.
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