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A Handheld Personal Spectrophotometer for Instant Measurements in Life Science, Biomedical, and Environmental Applications
Friday, August 24, 2018
Dieter Trau
A handheld spectrophotometer offers high performance and seamless integration with cloud, web, and mobile computing in the modern laboratory.
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Advanced Electron Paramagnetic Resonance Spectroscopy for the Identification of Irradiated Food
Friday, January 31, 2014
Joong-Ho Kwon
Hafiz Muhammad Shahbaz
Jae-Jun Ahn
Electron paramagnetic resonance spectroscopy (ESR) is a spectroscopic technique that permits the detection of unpaired electrons originating from radicals, including those induced by irradiation or ...
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Analyzing More Than 1,000 Pesticides With Multiple-Reaction-Monitoring Mass Spectrometry
Friday, February 22, 2019
Bob Clifford
With advanced technology and ultrafast scanning capabilities, LC-MS/MS and GC-MS/MS can deliver the high sensitivity necessary to generate quality data for complex samples.
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Applications of LC/MS for the Determination of Flavanols in Cocoa and Other Selected Foods
Friday, May 01, 2015
W. Jeffrey Hurst
There continues to be a great deal of interest in the flavanol class of compounds, especially in catechin and epicatechin, which are the monomeric and enantiomer members of the class differing only ...
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Automated Chromatographic Solid-Phase Extraction Using an Autosampler
Thursday, September 01, 2016
Mark Hayward
Jonathan Ho
Rick Youngblood
Matthew T. Hardison
Tom Moran
Kim Gamble
Solid-phase extraction (SPE) is a preferred tool for isolating target analytes from complex matrices because the availability of a diverse range of chromatographic sorbents enables targeted approaches...
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Best Practices: Incubators
Monday, May 08, 2017
Nancy Klimpel
Important parameters to consider when selecting an incubator are temperature accuracy, stability and uniformity.
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Bringing Raman Spectroscopy to the Undergraduate Laboratory
Friday, January 20, 2017
Brian Marquardt
Giora Proskurowski
Designed specifically for the educational environment, a Raman tool incorporates a safe way to operate laser in a durable, open package, offered at about a third of the price of a traditional Raman ...
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Calibration-Free Catalytic Microreactor for Analysis of Pesticides in Food
Wednesday, January 27, 2016
Charlie Spanjers
Paul Dauenhauer
Growers routinely test for pesticides in food.
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Compact HPLC Systems for the Analysis of Pesticides, Dyes and Drugs
Friday, January 20, 2017
Vlad Orlovsky
Yury Zelechonok
Konstantin Tchalukov
The analyzer described in this article provides fast analysis of food dyes commonly used in products in the beverage and pharmaceutical industries, as well as high-resolution separation of a complex ...
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Comparative QC Test Methods for Toothpaste Consistency
Tuesday, September 27, 2016
Robert McGregor
Important quantitative data can be obtained in the study of viscosity by measuring the consistency of toothpaste, i.e., thickness, ease of handling and ability to retain position, and observing the ...
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Comparison of ICP-QQQ and MP-AES to Alternative Atomic Spectroscopy Techniques
Friday, February 17, 2017
Shane Elliott
This article gives an overview of the various atomic spectroscopy techniques available to address a range of applications in environmental science, food and agriculture, life sciences and academic ...
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Determination of Olive Oil Adulteration With 60-MHz Benchtop NMR Spectrometry
Wednesday, April 01, 2015
Susanne D. Riegel
While the health benefits of extra virgin olive oil (EVOO) are well documented, the purity of any specific batch remains highly debatable. The great demand for EVOO, paired with the relatively high...
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Determination of Sulfonamides in Chicken Liver by Capillary Electrophoresis with an In-Column Fiber-Optic LED-Induced Fluorescence Detector
Tuesday, September 30, 2014
Lihong Guo
Dan Xiao
Martin M.F. Choi
Sulfonamides (SAs) are a class of synthetic antimicrobial compounds with a broad spectrum. As shown in Figure 1, they all contain the same chemical structure of an unsubstituted amino on a benzene ...
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Differential Scanning Calorimetry (DSC) as an Analytical Tool in Plastics Failure Analysis
Thursday, March 07, 2013
Kadine Mohomed
David A. Bohnsack
Thermal analysis includes techniques in which a physical property of a substance is measured as a function of temperature and time while the substance is subjected to a controlled temperature program...
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Direct, Real-Time Mass Spectrometry Analysis of Cinnamon
Tuesday, April 05, 2016
Joseph R. Swider
Jeffrey A. Jankowski
Antonio Sobevski
To ensure food safety, rapid detection of adulterated and counterfeit food products is critical.
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Exploring the Value of GPC/SEC in Polysaccharide Characterization
Tuesday, September 27, 2016
Stephen Ball
Examples of polysaccharides, widely used as food additives and in certain medical applications, include derivatives of cellulose and starch, such as hydroxymethyl cellulose and maltodextrin, ...
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Extraction of Planar Pesticides From Spinach and Fresh Oregano Using QuEChERS Methodology With a Novel Carbon Adsorbent
Monday, November 07, 2016
Michael Ye
Jennifer Claus
Although vital to plant life, the presence of chlorophyll in GC/MS analysis is highly problematic.
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Failure Analysis of Rubber Materials Using Pyrolysis-GC/MS
Wednesday, February 14, 2018
Rojin Belganeh
William Pipkin
Pyrolysis GC/MS has a wide variety of applications for identifying the organic composition of unknown samples by providing detail information about the compounds present in a sample.
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Handheld and Portable FTIR Spectrometers for the Analysis of Materials: Taking the Lab to the Sample
Friday, June 07, 2013
Alan J. Rein
John Seelenbinder
Industrial and academic scientists working in the development and application of engineered materials are increasingly in need of measurement technologies that can be used closer to the source of the...
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High-Throughput VOC and Inorganic Gas Analysis: Automated SIFT-MS
Friday, January 20, 2017
Mark J. Perkins
Vaughan S. Langford
Murray J. McEwan
A sensitive technique called selected ion flow tube mass spectrometry (SIFT-MS) allows the direct, real-time monitoring of inorganic gases and volatile organic compounds (VOCs), with no need to ...
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