Application Notebook-02-11-2011

Application Notebook

Generating Purge Gas for FT-IR Spectroscopy

February 11, 2011

Molecular Spectroscopy

0

0

Fourier transform infrared (FT-IR) spectrometers provide spectra in less time than scanning systems, but water vapor and/or CO2 in the sample chamber leads to additional peaks that may obscure important information. These interferences can be eliminated by sealing the sample chamber and purging with dry, CO2 free air (purge gas) or nitrogen for a short period of time.

Smart Oxygen Cuvette for Optical Monitoring of Dissolved Oxygen in Biological Blood Samples

February 11, 2011

Molecular Spectroscopy

0

0

A "Smart" Oxygen Cuvette has been developed by coating the inner surface of a plastic (PMMA) cuvette with sol-gel based oxygen-sensitive indicator material. This new oxygen sensing system monitors the dissolved oxygen in samples for biological and medical applications.

Spectroscopy Market: Weathering the Storm and on the Path to Recovery

February 11, 2011

Articles

0

0

After weathering the economic downturn of 2009, the analytical instrumentation industry's business appears to have made a U-turn in 2010, primarily due to the burgeoning requirements of the life sciences and pharmaceutical industries and substantial demands from the chemical and petrochemical industries, in addition to growing environmental concerns. The analytical instrumentation industry managed the economic downturn better than most other industries even though some of its primary revenue streams, such as the replacement market, were hurt by procurement postponements.

Multi-Residue Pesticide Analysis Using a GC Triple Quadrupole Mass Spectrometer

February 11, 2011

Mass Spectrometry

0

0

There are currently more than 1000 pesticides in use worldwide in the production of foodstuffs. There is a significant risk to human health and the environment due to increased pesticide use, poor agricultural practices and illegal use.

Finding Gold Just Became Easier than Ever Imagined

February 11, 2011

Molecular Spectroscopy

0

0

Photonic Knowledge, Inc., a spin-off of Photon etc., introduces the Core Mapper?, a hyperspectral imager that produces instantaneous, precise in situ mineralogy, lithology, and alteration mapping. This unique patented technology answers the increasing demand of the mining industry for better exploration tools.

QA/QC of Coatings and Surfaces via Exoscan Handheld FT-IR Analyzer

February 11, 2011

Molecular Spectroscopy

0

0

The application of FT-IR spectroscopy in quality assurance and quality control has largely been limited to laboratory efforts - bringing the samples to the instrument located on a benchtop in a lab. The advent of handheld analyzers such as A2 Technologies' Exoscan system, enables FT-IR to move from the lab to analyses at the sample site.

Mapping Protein Conformational Stability Using Automated CD

February 11, 2011

Molecular Spectroscopy

0

0

This study describes a new automated technique for measuring protein conformation by CD spectroscopy and how changes can be followed in different pH environments. The study confirms the robustness of the technique and superb sample-to-sample reproducibility.

FT-IR Sampling of Residues on Curved Metal Surfaces Outside of the Sampling Compartment

February 11, 2011

Molecular Spectroscopy

0

0

In the manufacturing process, it frequently becomes important to determine if metal parts are clean or are sufficiently lubricated with oil. Infrared analysis of small, flat pieces can be readily carried out by in-compartment grazing angle specular reflectance.

Advancements in Low Cost Miniature NIR Spectrometers Enable New Applications in Product Analysis and Quality Control

February 11, 2011

Molecular Spectroscopy

0

0

Near-infrared spectroscopy (NIRS) is a powerful technique for rapid and nondestructive material analysis. Scientific breakthroughs over the past several decades have made NIRS one of the most powerful tools for research, especially in industries such as food and drug, chemical, oil and gas, and plastics. This technique has mainly been limited to nonportable applications due to instrument size, fragility, and cost.

Applications of 1064 nm Dispersive Raman Systems in Biofuel Research

February 11, 2011

Molecular Spectroscopy

0

0

BaySpec, Inc. has developed a complete line of 1064 nm excitation, dispersive Raman systems that offer maximum reduction in fluorescence interference from biological samples and thus making them very useful tools for biofuel research.

CMOS Technology for Scientific Imaging

February 11, 2011

Laser and Optics Interface

0

0

Starting in the 1980s and continuing today, there have been large improvements in charge-coupled devices (CCDs), driven to a large extent by the needs of both the military and the scientific community consisting of astronomers, chemists, and biologists. This resulted in technologies such as back thinning to increase UV and near-infrared (NIR) sensitivity, deep depletion to increase NIR sensitivity, as well as the direct detection of X-rays.

Using Multi-Component Search for More Effective Identification of Seized Drugs by FT-IR

February 11, 2011

Molecular Spectroscopy

0

0

Infrared analysis of seized drugs is underutilized in many forensic laboratories owing to the ambiguous results produced by samples containing a mixture of compounds. The use of a patented multi-component search algorithm can help overcome the limitations of infrared for the identification of drugs in mixture samples.

Multi-Residue Pesticide Analysis Using a GC Triple Quadrupole Mass Spectrometer

February 11, 2011

Mass Spectrometry

0

0

There are currently more than 1000 pesticides in use worldwide in the production of foodstuffs. There is a significant risk to human health and the environment due to increased pesticide use, poor agricultural practices and illegal use.

Medical Imaging with Filters and Quantum Dots

February 11, 2011

Molecular Spectroscopy

0

0

The onset of nanotechnology and targeted therapy methods for a number of pathologies has made it increasingly more difficult to image effectively in the medical field. With that being said, the inception of quantum dots and the improvements to optical filters has made this once daunting task a common practice.

True Surface Microscopy

February 11, 2011

Molecular Spectroscopy

0

0

Confocal Raman imaging opened the door for many applications in Raman spectroscopy and imaging that were previously unavailable for measurement with conventional (non-confocal) Raman methods. However, high confocality always results in a high focus sensitivity and this can make measurements difficult with rough or inclined samples.

More Raman Analyses Less Fluorescence Interference

February 11, 2011

Molecular Spectroscopy

0

0

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.

FT-IR Diffuse Reflectance Sampling with an Environmental Chamber for In Situ Reaction Monitoring

February 11, 2011

Molecular Spectroscopy

0

0

FT-IR diffuse reflectance sampling coupled with an environmental temperature chamber offers a convenient method to study sample degradation, to evaluate catalyst efficiency, and to determine reaction pathways as a function of temperature and pressure.

Vol 26 No 2 Spectroscopy February 2011 Application Notebook PDF

February 01, 2011

Issue PDF

0

0

Click the title above to open the Spectroscopy February 2011 Application Notebook, Vol 26 No 2, in an interactive PDF format.