Application Notebook September 2013

September 2013 | Volume 28, Issue 9
Atomic Spectroscopy
Direct mercury analysis is ubiquitous in analytical labs within the environmental, petrochemical, and specialty chemicals industry for analyzing mercury in solids and liquids.
Demonstration of the advantages of using the Orbis micro-XRF elemental analyzer rather than other analysis techniques to perform elemental analysis through a plastic barrier and/or at atmospheric pressure.
In-lab acid purification offers significant benefits compared to commercial bottled high purity acid. In-lab purified acid is extremely pure, produced fresh on demand, and the cost savings compared to bottled high purity acid are significant.
This application brief will give a summary of a more thorough application note (1), which describes the analytical capabilities of Optima? 8300 ICP-OES utilizing low flow conditions, coupled to the prepFAST? in-line, auto-dilution/calibration sample delivery system to determine a suite of environmentally-significant elements in potable and waste waters according to US EPA Method 200.7.
This application brief will give an overview of a published article (1) that describes the analytical capabilities of the NexION? 300X ICP-MS coupled to the prepFAST? in-line, auto-dilution/auto-calibration sample delivery system to determine a suite of toxicologically-relevant elements in a group of four pharmaceutical products using the new USP Chapters <232> and <233>, which have replaced the 100-year old sulfide-based method described in Chapter <231>.
Globally, the permitted sulfur limit in fuel oils has been decreased to 10 ppm in many countries and regions.
Molecular Spectroscopy
In the manufacturing process, it frequently becomes important to determine if metal parts are clean or are sufficiently lubricated with oil.
The characterization of graphene with combined Raman-AFM imaging provides a nondestructive method to extensively investigate its properties.
A novel optical focusing method overcomes sampling hurdles associated with Raman devices that are based on a dispersive design. Raster Orbital Scanning (ROS) samples the target materials while maintaining high resolution and minimizing the power buildup of a tightly focused laser typical in Raman applications.
Raman microscopy has evolved into a common method for fast and non-destructive analysis of microscopic samples in forensic and R&D laboratories as well as for troubleshooting in the field of quality control. Samples ranging from art & archeology, materials science, biology, pharmacology to polymers and plastics can be investigated.
Solid dose drugs comprise a considerable segment of the pharmaceutical market.
Over the past several years, an alarming trend has become evident, highlighting serious issues related to contaminated alcohol within the European Union, particularly Eastern Europe (1).
Broadband wire grid polarizer (WGP) products suitable for MWIR and LWIR (mid- and long-wavelength infrared) spectroscopic applications requiring high contrast were developed on thin, AR-coated silicon substrates using Moxtek wafer-scale aluminum Nanowire? patterning capabilities. The Moxtek WGP performance was characterized from the SWIR to LWIR and shows marked improvement over competing WGP products, especially in terms of the contrast ratio between passing and blocking state polarizer transmittance.
Low concentration natural methanol exists in most alcoholic beverages and usually causes no immediate health threat.
The characterization of the active pharmaceutical ingredient (API) and its distribution and physical properties in commercial medicine is necessary in drug research and development process in the pharmaceutical industry.
Printed ink on a coated aluminum sample was analyzed using a specular reflectance accessory with the unique capability of simultaneous sample viewing to confidently position the sample. Visual images and spectra of the sample were recorded and stored.
Pharmaceuticals manufactures the world over are seeking more efficient ways to perform raw material analysis while complying with stringent global regulations.
Also
The feasibility of quantifying the soluble solids content of intact apples was investigated by visible and near infrared (vis–NIR) transmittance spectroscopy combined with the least squares support vector machines (LS-SVM) method. The spectra were pretreated by Savitzky-Golay smoothing, first and second derivatives, standard normal variate transformation, and multiplicative scatter correction.
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