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Analysis of Trace Elements, Including Sulfur, in Copper Using a DC Arc
Maura Rury, Teledyne Leeman Labs
The analysis of trace elements in high purity copper is challenging using techniques that require sample digestion prior to analysis. Digestion procedures are often complex, time-consuming, and increase the risk of sample contamination during preparation. DC Arc allows copper samples to be analyzed in their solid metallic form, eliminating the need for sample dissolution and greatly increasing the speed with which samples are prepared and analyzed.
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Pharmaceutical Ingredient Uniformity Determination Using LIBS
Steve Buckley, PhD, TSI Incorporated
The uniform blending of active pharmaceutical ingredients (API) and excipients is critical to product quality. The homogeneity of ingredients within a batch or tablet must often be rapidly determined with minimal sample modification. In this experiment, LIBS analysis was used to rapidly monitor batch powder and tablet homogeneity.
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Raman Microspectroscopy of Plastic Explosives
Dr. Paul Martin, CRAIC Technologies
The identification of explosives has become a critical aspect of both homeland security and military operations. Identification, especially of post-blast residue, can be very challenging as there may only be trace amounts of the explosives available for analysis. Additionally, explosives are designed to undergo exothermic reactions with the application of energy. Since spectroscopic techniques used to analyze trace evidence require electromagnetic energy to be focused onto a microscopic sampling area, the energy flux is high and can lead to exothermic reactions in the sample of explosive. The purpose of this paper is to show results from the spectroscopic analysis of some explosive samples as well as to discuss the techniques used to acquire these spectra.
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Graphene Analysis by NomadicTM Raman Microscope
Bayspec Inc.
Graphene has becoming the novel material for the next-generation semiconductor and photonic devices. This app note demonstrates how BaySpec’s Nomadic confocal Raman microscope is used to quantitatively analyze graphene (including large samples up to 12 in.) in a real-time, non-contacting manner.
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Measuring Optical Densities Over 10 Abs on the Agilent Cary 7000 Universal Measurement Spectrophotometer (UMS)
Travis Burt, Agilent Technologies
High blocking optical filters deliver critical optical control in a wide variety of consumer and industrial products. Highly attenuating (that is, high optical density) filters are used in personal protective equipment, such as laser safety eyewear, through to precise, low light level control in optical systems for enhanced sensitivity at preferred wavelengths. This technical overview demonstrates the performance of the Cary 7000 UMS for the measurement of such materials.
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