January 2013 Subscribe Go to Application Notebook PRINT SUBSCRIBE DIGITAL SUBSCRIBE

WDXRF App Note: Analysis of P, S, and Cl in Bio-Diesel and Bio-Ethanol Scott Fess, Rigaku Global Marketing Group Application Note #5032 describes quantitative analysis of trace amounts of P, S, and Cl in biofuels using the benchtop Rigaku Primini Biofuel, a unique dedicated WDXRF analyzer for P, S, and Cl analysis.   Determination of Hg in Environmental Samples By Direct Analysis Johan Nortje, Milestone Mercury is a key environmental analyte and traditionally has been measured by time consuming CVAA or ICP-MS, both of which require significant sample prep. Direct mercury analysis eliminates sample prep and delivers fast results for environmental samples.

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.   Eliminating Resolution vs. Throughput Trade-Offs in Raman Spectroscopy Nick Barnett, PhD, and Yvette Mattley, PhD, Ocean Optics A new spectrometer design incorporating high throughput virtual slit (HTVS) technology eliminates trade-offs between sensitivity and optical resolution that can limit the effectiveness of traditional dispersive spectrometers for Raman spectroscopy.