ResourceSeparations

Ozone Precursor Analysis Using a Thermal Desorption-GC System

1 Oct 2012

This white paper describes a method to collect and measure C2 to C12 automatically in the field, without the use of liquid cryogen. This system has been updated to support the use of thermal desorption (TD) systems, the PerkinElmer® TurboMatrix™ Thermal Desorbers. With quantitation limits below 0.1 ppb (FID) and the capability of sampling for 40 minutes of every hour, the system meets the requirements of this exacting method.

Clarus 680 GC

PerkinElmer

The Clarus® 680 GC is designed for fast-paced, high-volume laboratories that require fast analytical cycle times. It maximizes throughput with the fastest injection-to-injection time of any conventional gas chromatograph. The Clarus 680 GC incorporates many other PerkinElmer innovations that provide unprecedented operational simplicity and outstanding flexibility while removing the barriers to productivity that can arise with more demanding samples and applications. The fastest temperature programmable inlets available combined with programmable pneumatic control (PPC) provides simple and straightforward solutions to complex analyses such as analysis for methanol in crude oil or determination of pesticides in food. Its near-ambient performances make the Clarus 680 GC the instrument of choice for the separation of light volatile components or when Large Volume Injection is required to run high-sensitivity GC/MS applications. Complete instrument control is available through TotalChrom and TurboMass as well as Waters® Empower™ 2 and Agilent® EZChrom Elite™ drivers. Features/Benefits Patented high-performance oven - the unique oven design of the Clarus 680 GC provides the fastest available heat-up and cool-down rate, enabling shorter injection-to-injection and analytical cycle times, maximizing your sample throughput and achieve maximum return on your investment •  Its twin-walled oven design with concentric air exhaust* allows the user to achieve greater separation at near-ambient temperatures without the use of special coolants, especially important for the analysis of Volatile Organic Compounds (VOCs). •  Fast oven heat-up allows faster chromatography, particularly useful when speeding up the elution of late eluting compounds. •  Fastest available cool-down rate is delivered using forced convection air. This greatly reduces non-productive time between runs. •  Universal Programmable Split-Splitless (PSS) and Programmable On-Column (POC) injectors design enables Large Volume Injection of volatile solvents and cold on-column injections without the use of expensive cooling agents •  Novel Swafer™ micro-flow technology dramatically simplifies complex tasks helping to make the Clarus 680 GC easily used by operators at all skill levels •  Complete instrument control is available through TotalChrom™, TurboMass™ as well as Waters® Empower™ 2 and Agilent® EZChrom Elite™ drivers.

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Gas ChromatographyGas chromatography (GC) is an analytical technique used to separate and quantitate mixtures of small and volatile compounds. Gas chromatographs or GC systems include components such as GC columns, detectors, pumps and autosamplers. Choose from packed or capillary GC columns, flame ionization (FID), photoionization (PID) electron capture detectors and selective or non-selective detectors. Find the best gas chromatographs in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Environmental Monitoring and TestingEnvironmental monitoring and testing uses handheld portable analyzers, kits, spectrometers or chromatography systems for air, water, soil, food and other sample testing. Useful features of analyzers such as BOD and COD include portability, easy calibration, automation and sensitivity.  Environmental test kits for pH, water, moisture, etc, should be accurate, sensitive, reliable, fast and easy to use.Volatile Organic Compounds (VOCs)Volatile organic compounds (VOCs) are chemicals that have a low boiling point. Some VOCs are harmful to human health, whereas others can be used to determine the shelf-life of foods samples. OzoneEPA MethodsEPA methods are procedures approved by the U.S. Environmental Protection Agency for monitoring and analyzing environmental pollutants, including air, water, and soil samples. These methods are critical in ensuring public health and environmental safety. Explore EPA methods and tools in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.