Application Notebook-09-01-2013

Application Notebook

Specular Reflectance Spectroscopy with Viewing

September 01, 2013

Molecular Spectroscopy

28

9

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.

Elemental Analysis Through a Plastic Barrier

September 01, 2013

Atomic Spectroscopy

28

9

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.

Wire Grid Polarizers for IR Spectroscopy

September 01, 2013

Molecular Spectroscopy

28

9

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.

Improving Trace Metals Data Quality Through In-Lab Acid Purification

September 01, 2013

Atomic Spectroscopy

28

9

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.

Quantification of the Soluble Solids Content of Intact Apples by Vis–NIR Transmittance Spectroscopy and the LS-SVM Method

September 01, 2013

Also

28

9

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.

Analysis of Potable and Waste Waters by US EPA Method 200.7 Using the Optima 8300 ICP-OES and prepFAST Auto-Dilution/Calibration System

September 01, 2013

Atomic Spectroscopy

28

9

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.

Depth Profiling of Complex Samples Using Confocal Raman Microscopy

September 01, 2013

Molecular Spectroscopy

28

9

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.

Identification of Explosives with Handheld Raman Spectroscopy and an Innovative Sampling Technique

September 01, 2013

Molecular Spectroscopy

28

9

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.

The NexION 300X ICP-MS Coupled with the prepFAST Auto-Dilution/Calibration System for the Implementation of USP Chapters 232 and 233

September 01, 2013

Atomic Spectroscopy

28

9

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 and , which have replaced the 100-year old sulfide-based method described in Chapter .

Vol 28 No 9 Spectroscopy September 2013 Application Notebook PDF

September 01, 2013

Issue PDF

28

9

Click the title above to open the Spectroscopy September 2013 Application Notebook, Vol 28 No 9, in an interactive PDF format.