October 2012


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	Corrosion Resistance of DuraBeryllium Windows- Part 2 *R. Creighton, Moxtek, Inc.* Moxtek produces three different types of beryllium X-ray windows that go on X-ray detectors, including thin beryllium foil windows. These windows are tested against a variety of harsh environments and chemicals to compare their relative resistances. Moxtek’s DuraBeryllium Plus windows were found to outperform all other types in terms of chemical resistance.
	Analysis of Silicon, Phosphorus, and Sulfur in 20% Methanol Using New Triple Quadrupole ICP-MS Technology *Emmett Soffey, Bert Woods, and Steve Wilbur, Agilent Technologies* This app note demonstrates how the Agilent 8800 Triple Quadrupole ICP-MS provides significantly enhanced sensitivity and interference reduction for the challenging elements silicon, phosphorus, and sulfur in organic matrices when compared to conventional quadrupole ICP-MS systems.
	EDXRF Analysis of Lead in a Dietary Supplement *Shimadzu* This application note presents the quantitative analysis of As and Pb in a dietary supplement (herbal medicine), as well as an evaluation of their lower limits of detection and quantitation, respectively.
	Nondestructive Elemental Impurities Testing for USP <232> *Ian Campbell, Youhong Xiao, Bruno Vrebos, Lieven Kempenaers, David Coler, and Katherine Macchiarola, PANalytical Inc.* USP <735> introduces XRF as an acceptable method for testing compliant with <232>. XRF is nondestructive, produces no hazardous waste, and offers low TCO. This white paper demonstrates performance for all <232> elements.
	Mercury Determination in Coastal Seawater Using EPA Method 245.7 and CVAA *Jeff Forsberg and Brian Cook, CETAC Technologies* Determination of mercury in seawater is crucial for environmental monitoring. A CVAA system has been developed to accomplish ultra-trace analysis in the ng/L range in 90s using EPA method 245.7.
	Benefits of a Ceramic Torch for ICP Spectrometry *Ryan Brennan, Jerry Dulude, and Vesna Dolic, Glass Expansion* A fully ceramic torch has been shown to resist wear, run hotter and cleaner, and conserve argon.
	Advancing Quality Control in ICP Spectrometry *Jerry Dulude and Ryan Brennan, Glass Expansion* A liquid flow monitor tracks sample uptake to an ICP over the course of a run. A programmable temperature spray chamber controls and monitors temperature to compensate for temperature drift.
	Determination of Hg in Clinical Matrices by Direct Analysis *Johan Nortje, Milestone* Excessive exposure to mercury has been linked to neurological and developmental disorders in children and adults. Direct mercury analysis requires no sample preparation and delivers fast results for clinical samples.
	Analysis of Trace Elements in High Purity Copper Using the Teledyne Leeman Labs Prodigy DC Arc *Maura Rury, Teledyne Leeman Labs* In the analysis of trace elements in high purity copper the 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.

	NIR Diffuse Reflection Analysis of Fruit *Yvette Mattley, PhD, Ocean Optics* In this application note, near-infrared (NIR) diffuse reflection spectra are measured for avocados and mangoes to demonstrate the power of NIR measurements for the noninvasive assessment of fruit quality.
	Measurement of Diffuse Reflection from Catalyst Powders Using UV-Vis-NIR Spectroscopy *Eric Marceau, Caroline Perier, and Travis Burt, Agilent Technologies* Aluminium oxide (alumina) is a naturally occurring compound that has a broad range of industrial applications. Alumina also plays a vital role as catalyst support for desulfurization or hydrogenation reactions. The Agilent Cary 5000 UV-Vis-NIR coupled with a diffuse reflectance accessory is suitable for gaining greater understanding of the chemical transformations taking place over wide temperature ranges (20–250 °C).
	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. Current EU regulation limits naturally occurring methanol to below 10 g/L of ethanol; or equivalent to 0.4% methanol in 40% ethanol.
	Increase Accuracy of FT-IR Analysis *Parker Hannifin Corp.* This study demonstrates the inconsistency in background levels of water and CO₂ for an unpurged, sealed, and desiccated FT-IR spectrometer as compared to a sealed and desiccated FT-IR spectrometer with the sample compartment purged. The purge enhances instrument reliability by reducing the need for maintenance and increases the accuracy of analysis by eliminating inconsistencies in background levels of CO₂ and water.