Gas Chromatography (GC)

In this article, methods developed for rapid, automated detection of CWAs and TICs using a low thermal mass capillary gas chromatograph coupled to a toroidal ion trap mass spectrometer (TMS) are presented.

Phenomenex Inc. (Torrance, California) raised raised $5,150 for Cheer for Children, a Redondo Beach based non-profit that raises donations to help acutely ill children and their siblings at County-Harbor UCLA Medical Center and for children with orthopedic disabilities at local schools, through a combination of sporting challenges, raffles, and refreshment sales.

An overview of contemporary techniques in environmental analysis.

For the second year in succession Markes International Ltd. (Llantrisant, UK) has been awarded two highly prestigious awards, International Business of the Year, and Company of the Year by the Rhondda Cynon Taf business club.

After a brief illness, noted chromatographer Clarence S. "Bucky" Wentzel passed away Friday, February 20, 2009, at the age of 66.

Agilent Technologies (Santa Clara, California) and Markes International (Llantrisant, UK) have announced a strategic alliance for global distribution and market development of analytical thermal desorption instruments for gas chromatography.

LCGC (Chromatographyonline.com) has developed a pilot program with EARL (EARL2learn.com), the most extensive online library of interactive web-based learning material for analytical chemistry.

GC–MS method is presented for the quantitative determination and confirmation of melamine residues in milk products. The milk sample was cleaned up using Agilent's SampliQ SCX SPE cartridges before derivatization. The derived extracts were analysed by GC–MS with EI in synchronous SIM/scan mode on a Agilent J&W DB-5ms Ultra Inert column.

Ron Majors brings readers his yearly review of all that was new and innovative at the annual Pittsburgh Conference.

The causes and cures for peak tailing are discussed, along with the various ways that chromatographers measure tailing peaks.

A miniature gas chromatograph incorporating a miniaturized chemical trap for enrichment, rapid thermal desorption of the trap, a resistively heated capillary column for programmed GC analysis and a micro-chip-based plasma emission detector (PED) is described. The sampling and chromatographic conditions for the analysis of volatile compounds in air are presented. The performance of the µCAD is illustrated in the universal (carbon) mode and for the selective detection of chlorinated and organo-mercury compounds. Detection limits (DLs) are at the sub-μg/L level in the carbon mode and 10 ng/L for organo-mercury compounds.

Detectors are another link in the chain of signals that a chromatographic analysis generates. After separation, a detector transduces the chemical signals of eluted analytes to an electrical signal that is then recorded and measured. The identities and amounts of analytes are determined from this information. This month in "GC Connections", John Hinshaw examines the environment, set-up and operating conditions necessary to ensure high gas chromatography detector performance and reliability.

Agilent Technologies Inc. (Palo Alto, California) and Healex Systems Ltd.(Wilmington, Delaware) announced that Agilent now fully supports Healex's ChemLaunch remote instrument access and control module for Agilent's ChemStation chromatography software.

A team of scientists from Agricultural Research Service (ARS) and Abraxis, Inc. compared the a new triclosan test, called "magnetic particle enzyme immunoassay," to the more traditional method-gas chromatography-mass spectrometry (GC-MS). They hope that this test, which detects triclosan at a concentration of 20 parts per trillion (ppt)-the equivalent of 1 ounce in 31 million tons, can expedite environmental monitoring of this widely used antibacterial agent in rivers, wells, and other bodies of water.

The Pittsburgh Conference announced a recent co-operative venture with the Professionals' Net Work in Advanced Instrumentation Society (PAI-NET).

Agilent Technologies Inc., (Palo Alto, California) announced a low thermal mass (LTM) system for rapid heating and cooling of its 7890A gas chromatograph (GC), which will greatly increase productivity by significantly reducing analytical cycle times.

There are a host of volatile organic compounds (VOC) in sea salt that originate from several sources such as the surrounding plants, algae, bacteria and environmental pollution. A team of scientists from the University of Aveiro, one region where sea salt is produced, reasoned that the combination of VOC from the different local sources could be sufficient to create a unique fingerprint of the salt.

PerkinElmer Inc. (Waltham, Massachusetts) has acquired Arnel Inc. (Parlin, New Jersey), a custom producer of GC technologies for the petrochemical, food and beverage, and industrial hygiene markets.

This month, John Hinshaw examines the environment, setup, and operating conditions necessary to ensure high gas chromatography detector performance and reliability.

Chromatographers are choosing hydrogen carrier gas more often for its performance and, in the face of increasing helium prices, cost. In this instalment of "GC Connections", John Hinshaw addresses some of the more frequently asked questions he encounters regarding hydrogen as a carrier gas.

Dr. Philip J. Wyatt, the CEO and founder of Wyatt Technology Corporation (Santa Barbara, California) has been awarded the 2009 Prize for Industrial Application of Physics by the American Physical Society (APS).

Pittcon announced the recipients of 11 prestigious awards recognizing the significant contributions of leaders in analytical chemistry and applied spectroscopy.

Phenomenex Inc., (Torrance, California), will be presenting a workshop, "Analytical Challenges in Biofuel Analysis," at the 2009 Pittsburgh Conference in Chicago.

Melamine is an industrial chemical with a high nitrogen content that can cause kidney stones and lead to renal failure. In some instances, melamine has been added to baby formula and dairy products as a substitute for protein. This paper presents an efficient and definitive gas chromatography–mass spectrometry (GC–MS) method to identify melamine and related compounds based on the released US Food and Drug Administration (FDA) method.

This application details a fast, reliable and highly selective trace-level screening method for the quantification of polychlorinated biphenyls (PCBs) in environmental, food and biological samples, using gas chromatography and a triple stage quadrupole mass spectrometer. The analytical strategy is analogous to the well-established US Environmental Protection Agency (USEPA) Method 1668A.