Application Notes: General
Characterization of Diesel Fuel Using a Modular Raman System
February 1st 2014Raman spectroscopy is an excellent technique for the identification and characterization of fuels. With no requirement for sample preparation and the power to identify and quantify materials, Raman has many uses across a range of industries.
Single Reaction Chamber Microwave Digestion for Specialty Chemicals
February 1st 2013Single reaction chamber microwave digestion enables a chemist to digest up to 15 different specialty chemical samples simultaneously at temperatures as high as 300 ?C, greatly simplifying the workflow while maintaining superior quality digestions.
The miniDOAS: Low Cost, High Performance Contactless Ammonia Measurements
Knowledge of atmospheric ammonia concentrations is important, but ammonia is difficult to measure. We report here on the development of a low-cost ammonia measuring differential optical absorption spectroscopy (DOAS) instrument, based on a small sized and low priced spectrograph.
Microwave Digestion of Pharmaceutical Samples for USP Method
February 1st 2013Pharmaceutical samples spiked with several heavy metals were prepared for ICP-MS analysis using microwave digestion following the protocols in proposed USP chapters <232> and <233>. The results of the spike recovery study are discussed.
Non-Destructive Red Wine Measurement with Dispersive 1064 nm Raman Spectroscopy
February 1st 2013Owing to technological improvements spurred on by the telecommunications boom of the last decade, Raman spectroscopy has become much more accessible to users in all application areas, including agricultural, forensic, pharmaceutical, biomedical, and others.
Eliminating the Trade-Off Between Resolution and Throughput in Raman Spectroscopy
February 1st 2013Although Raman spectroscopy is an excellent analytical tool, Raman signals are often weak and traditional slit spectrometers typically have poor optical throughput, limiting their effectiveness in low light level setups.
Moxtek's ULTRA-LITE X-ray Source
February 1st 2013Moxtek's ULTRA-LITE X-ray source is a very small self contained X-ray source (X-ray tube and high voltage power supply) for use in portable X-ray applications, such as the handheld X-ray fluorescence (XRF) spectrometers. This note demonstrates that this X-ray source has a stable and repeatable X-ray flux output over time, which is vital for the precision of the calibrated XRF measurements.
Improved Sensitivity with the New Apollo XRF ML-50 Detector on the Orbis Micro-XRF Analyzer
February 1st 2013The measurement of trace elements is important across a wide variety of materials characterization problems. When measuring small glass fragments collected from crime and accident scenes, forensics experts analyze trace strontium (Sr) and zirconium (Zr) typically unintentionally incorporated into the glass during manufacturing as one point of identification or comparison.