AL
the “greasy” reversed-phase particle surfaces, essentially eliminating the trailing edges of the blunt parabola flow profile and significantly narrowing the chromatographic band widths. Column efficiencies of 2 million plates per meter have been reported.
A nano-flow LC plumbed with a very narrow capillary column was promi- nently displayed in the VICI booth. Two nano-syringe pumps feed a mixing T just before a valve that contains the injection loop and column inlet. The nano pumps deliver 2.5 nL per step and 10 pL per microstep. Smooth delivery of mobile phase at <10 nL/min is now realistic. Nano-flow LC operates with small-diameter columns, including slip-flow columns, so this LC is clearly designed for analytical applications.
Submicrometer fused-silica capillaries With the introduction of nano-capillary fused-silica tubing by Polymicro Technologies (Phoenix, Ariz.), chromatographers and engineers will be
able to conveniently explore nano-scale instrumentation ultimately lead- ing to single-molecule analysis. Tubing internal diameters range from 200 to 1000 nm and interface with current fitting technologies. Fittings (unions and splitters) and cleaving stones are also available.
Pittcon 2017 is scheduled for March 5–9 in Chicago, Illinois. Please monitor
pittcon.org for more information.
Reference
1.
www.americanlaboratory.com/914-Application-Notes/182544- Calibration-Free-Catalytic-Microreactor-for-Analysis-of-Pesticides- in-Food/
Robert L. Stevenson, Ph.D., is Editor Emeritus, American Laboratory/ Labcompare; e-mail:
rlsteven@yahoo.com
LIVE WEBINAR IMPROVING
PRODUCTIVITY in Environmental Laboratories
What would you do with an extra hour of free time every day?
Thursday, May 19, 2016 2:00 PM EDT
REGISTER at
http://bit.ly/1XEOZjU SPEAKERS
Amy Hansen from Pace Analytical shares her experience of optimizing titration and ion chromatography workflows using dedicated environmental analyzers to improve sample turnaround times in the environmental lab.
Systems configured to operate within the natural workflow of the lab create efficiency opportunities that reduce error and improve accuracy. Efficiency is gained using simple, multi-parameter analyzers to combine various ion measurements within a single system.
Key learning objectives: • Understand easy ways to optimize workflow for routine measurements • Discover how you can minimize operating costs while staying in full compliance with EPA methods • Hear how multi-parameter analyzers will help you submit proficiency testing results with confidence Who should attend? • Contract labs performing water analysis as per EPA methods • Municipal water utilities performing drinking water, wastewater and storm water management
• Chemical, Pharmaceutical, Petrochemical, Refinery, Polymer, Food, Electroplating, Paper & Pulp, and other industrial users performing waste water discharge monitoring
• Those who want to learn about inorganic applications for environmental compliance and monitoring
Amy Hansen Inorganic Chemist
Pace Analytical Services, Inc.
Frederick Fiddler Director, Applications
Metrohm USA
AMERICAN LABORATORY
25
MAY 2016
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