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Featured Application Note:
UV-Vis-NIR Spectrophotometer Analyzer Comparison
Roger Ketcheson, Moxtek, Inc.
The Moxtek Proflux® UVD260 and UVD240 analyzers improve UV-Vis NIR spectrophotometer performance. The Moxtek Proflux UVD260 and UVD240 analyzers conserve space, offer an exceptionally wide cone acceptance angle, cover the wavelength range from 240 nm to 3.3 µm, and have no disturbance issues as does a Glan-Taylor Prism.
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Analysis of Oil Additives Using Teledyne Leeman Labs Prodigy High Dispersion ICP
Manny Almeida, Teledyne Leeman Labs
Oil additives are used to modify various properties of the oil to improve its performance. Most motor oils contain “anti-oxidant” additives which helps prevent the oil from burning when it gets hot. These additives contain detergents and dispersants to suspend and neutralize impurities in the oil and prevent them from coagulating in the engine. This application note will demonstrate the ability of the Teledyne Leeman Labs Prodigy High Dispersion ICP to determine a range of elements in two oil additive sets. |
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Preparation of Mixed Food Samples for Trace Metals Analysis Using the CEM MARS 6 and Discover SP-D Systems
Jason Keith, CEM Corporation
Mixed food samples and reference standards were prepared for elemental analysis using microwave sample preparation. Recovery data is presented for multiple elements of interest including mercury, arsenic, cadmium, and lead. |
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Lubrication Oil Analysis by ASTM D6443-04
Laura Oelofse, Rigaku Americas Corporation
ASTM D6443-04 specifies the use of the wavelength-dispersive (WD) XRF technique, because it offers sufficiently high precision, resolution, and light-element sensitivity. Calibrations and repeatability were demonstrated using the new Supermini200 benchtop WDXRF spectrometer. |
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AA Measurement of Cesium in Tap Water and Soil
Shimadzu
Recently, technologies that can efficiently remove radioactive cesium (chiefly Cs-137) from water and soil have been actively researched. Cesium can be analyzed using atomic absorption spectrometry, and this application presents results of AA analysis of cesium in tap water and soil. |
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Transportable Dual-Band Raman System for Fuel Analysis
Huawen (Owen) Wu, Chad Lieber, Jack Qian, Lin Chandler, and Eric Bergles, BaySpec, Inc.
Fuel analysis on the go is achieved by BaySpec’s newly developed multi-wavelength, auto-aligned AgilityTM Raman system. |
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Microliter Sample Fluorescence Using Hellma TrayCell® (aka Horiba's MicroSense).
Jeremy Pronchik, HORIBA Scientific
Biological samples requiring measurements in the microliter range without dilution can be attained with a lifetime or steady state spectrofluorometer and a Hellma TrayCell (aka Horiba's MicroSense). |
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Expanded Spectral Range Germanium ATR Crystal
Jenni L. Briggs, PIKE Technologies
Experimental data show the crystal dimensions of an ATR-FT-IR sampling accessory influence the usable spectral range. An expanded range germanium crystal is introduced for the measurement of high refractive index samples. |
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Strategies to Compare Far-UV Circular Dichroism Spectra of Similar Proteins
Dr. Lindsay Cole, Applied Photophysics Ltd.
In this application note, we explore two ways of analyzing circular dichroism spectra taken in the far ultraviolet (UV), that is over the wavelength range 180–260 nm, that do not require quantitation of the protein concentration. Eight mammalian serum albumins, which are all structurally very similar, were used. |
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Emission Spectrum Measurement of LED Lamps
Shimadzu
This note presents the emission spectra of several LED bulbs using UV-Vis with an emission spectrum measurement accessory, which enables comparative investigation of various types of illumination sources. Their spectrum profiles and light distributions are also presented. |
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