October 2011


October 2011	Subscribe	Go to Application Notebook

Featured Application Note:
Targeted Screening of Drugs of Abuse by LC–MS/MS
C. Gechtman, A. Masarin, S. Scurati, B. Duretz, and P. Regulus, Thermo Scientific
Screening of biological samples for drugs of abuse and their metabolites is the work of forensic toxicology laboratories. This note shows a rapid and accurate targeted screening method for 294 compounds in urine utilizing timed SRMs and a data-dependent scan function that increases product ion sensitivity.

	Iron and Steel Analysis Using Simultaneous ICP Emission Spectrometry *Shimadzu* Different types of iron and steel consist of many different characteristics, which are dependent on the types and amounts of elements in these products. In this application, the analysis of standard substances in iron and steel is shown.
	Stand-off LIBS: A Detection Technique for Explosive Residues *Dr. Gerald Cairns, Andor Technology* Stand-off techniques have received increasing attention as valuable methods for material analysis at remote distances. This is particularly relevant when looking at hazardous contaminants in the environment or residual explosive material, where it is desirable for the analyst to remain at a safe distance from the material being investigated.
	Analysis of Trace Elements in Petro-Diesel and Biodiesel Fuels *Phil Lowenstern and Elizabeth Reisman, Agilent Technologies* Microwave plasma-atomic emission spectrometry (MP-AES) provides an ideal, low-cost solution for multi-element analysis of diesel fuel samples with excellent long-term stability, reduced running costs, and improved lab safety.
	The Determination of Mercury in Drinking Water *David Pfeil, Teledyne Leeman Labs* This application note describes the sample handling requirements, analysis conditions, and results obtained for the determination of mercury in drinking water using the Hydra II_AA Mercury Analyzer from Teledyne Leeman Labs.
	Enhanced Productivity ICP Approaches for Engine Oil Analysis *Jerry Dulude and Scott Bridger, Glass Expansion, Inc.* We compared two approaches to oil analysis. First, diluted oils were analyzed with an enhanced productivity (EP) accessory. Alternatively, oils were both diluted and analyzed using an EP accessory.
	Elemental Analysis of Regulated Products: Case Study Infant Cereal *Ian Campbell, PANalytical* Benchtop XRF is a viable method for elemental analysis on regulated products such as infant cereal. XRF requires little to no sample preparation, and is simple to operate with long-lasting calibrations.

Disinfection of Tetraselmis sp. with UV LED Application
Yong-Ki Choi, Dae-Won Park, Hyang-Eun Cho, Gyung-Suk Kil, Sung-Kuk Choi, and Ji-Ho Chang, Avantes
Ballast water is seawater that fills a ship to maintain its balance. Annually, about 10 billion tons of ballast water with organisms such as planktons, germs, and bacteria is being transported around the world, and they cause diseases and contamination of marine ecology. UV treatment has the advantage of having no remaining toxic and disinfection by products (DBPs). Selective monochromatic wavelengths can be applied in the UV. Besides this, UV LED modules have a low power consumption rate and only a 10~100 (mA) applied current.

Corrosion Resistance of X-ray Windows- DuraBeryllium Plus
Shaun Ogden, Mallorie Coffin, and Steve Liddiard, Moxtek, Inc.
DuraBeryllium^® Plus windows are Moxtek’s most robust coated beryllium x-ray window. This window has an additional thin coating of polymer “Plus” applied to the already robust DuraBeryllium window. The Plus layer is more resistant to water and other harsh chemicals.

	More Raman Analyses Less Fluorescence Interference *Duyen Nguyen and Eric Wu, Enwave Optronics, Inc.* In recent years, the spectroscopy community has observed rapid development of Raman instrumentation and its usefulness in a variety of applications. Routine Raman analysis with 785 nm excitation has served well for the great majority of industrial applications and has become the most favored instrument configuration.
	Carbon Nanotubes Analyzed by UV-Visible Microscopy and Microspectroscopy *Paul Martin, CRAIC Technologies, Inc.* Carbon nanotubes are imaged by UV microscopy and then UV-visible-NIR spectra are obtained, both using a CRAIC Technologies UV-visible-NIR microspectrophotometer.
	Quantitative Analysis of Copolymers Using the Cary 630 FTIR Spectrometer *Frank Higgins and Alan Rein, Agilent Technologies* FT-IR spectroscopy is used to determine the amount of styrene content in styrene butadiene rubber (SBR) and the ratio of polyethylene to vinyl acetate in polyethylene vinyl acetate (PEVA) polymer.
	Screening Optimal Buffer Conditions for a Therapeutic Antibody Using Chirascan™-plus ACD Spectrometer *Dr. Lindsay Cole, Applied Photophysics Ltd.* A currently marketed therapeutic antibody was diluted into a number of buffer conditions with varying pH (pH 2.2–7.8) and ionic strength (75–575 mM) conditions in two 96-well microplates, and then automatically sampled using the Chirascan™-plus ACD instrument.
	Fast Quality Evaluation of Bulk Polymers and Products *Pengcheng Yu, Tory Woolf, and Mike B Simpson, ABB Analytical Measurements* FT-NIR spectroscopy can be used for the quantitative determination of key physical parameters in bulk polymers and products (density and melt index). Measurements can often be made with little or no sample preparation.

Contact Editor - Meg Evans

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