American Laboratory Contents
Volume 47, Number 6 Chemistry
The Importance of Monodisperse Silica in the Evolution of UHPLC and HPLC Column Performance
by R.A. Henry, P. Ross, W.R. Betz, G. Parmar and W.K. Way..........................................8
Analytical HPLC and UHPLC columns filled with porous and core-type particles should continue to improve in efficiency to address the demand for higher sample throughput.
Clinical Diagnostics
Reference Standards Address Technical Challenges in DNA Resequencing
by N.A. LaFranzo ......................................................................................................14
Well-characterized reference standards are an effective route to earlier detection of diseases, noninvasive monitoring and lower sample input, all of which push the technical limits of NGS.
Environmental
A Tandem Approach to TOC Analysis in Drinking Water Treatment by J. Welsh, Jr. ..........................................................................................................20
An analyzer that uses a heated persulfate oxidation technique in U.S. EPA Methods 415.3 and SM 5310 can be employed for the analysis of source/raw water and finished drinking water.
Materials Science
Time-Efficient Execution of Rheological Tests in Oscillation With an Easy-to-Use Quality Control Rheometer
by F. Meyer...............................................................................................................23
Oscillatory experiments can be conducted economically with a mechanical-bearing rotational rheometer.
Forensics
Electronic DNA Sample Processing Preserves Evidence Integrity in the Forensics Laboratory
by J. Brocato.............................................................................................................30
An electronic DNA sample processing solution helps reduce DNA sample backlogs and increase quality in the forensics laboratory.
On the Cover Specimen: Micrasterias furcata algae showing the final stage of cell division. Technique:
polarized light, image stacking. Image captured by Mr. Rogelio Moreno Gill, Panama City, Panama. Honorable Mention in the 2014 Olympus BioScapes Digital Imaging Competition. For more information, please visit
www.olympusbioscapes.com.
Chemistry
Glycoxidative Modification of Adenosine in Relation to Diabetes and Obesity: Detection of Carboxymethyl-Adenosine in Biological Samples
by Z. Ara Lila, L.D. Whitesides, C. Weze and Y. Thomas..............................................34
Results of a study suggest that glycation reactions are a possible source of complications in diabetes involving RNA macromolecules.
AMERICAN LABORATORY • 2 • AUGUST 2015
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www.americanlaboratory.com
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