Jun 26, 2009
Speciality chemicals group LANXESS AG has made two acquisitions in Asia. The company will acquire the chemical businesses and assets of Gwalior Chemical Industries for €82.4 million. LANXESS will also acquire the business and production assets of Chinese-based Jiangsu Polyols Chemical Co.
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 | Jun 24, 2009
Understanding the qualification requirements of all laboratory equipment is key to ensuring regulatory compliance.
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Jun 5, 2009
Owlstone Nanotech and Agilent Technologies have announced a phase one agreement to develop Owlstone's field-asymmetric ion mobility spectrometry (FAIMS) filter as a front-end separation module for Agilent's Accurate Mass time-of-flight mass spectrometers (TOF-MS).
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Apr 1, 2009
By:Michael P. Balogh
The use of mass spectrometry to study biofuels is examined and the advantages and disadvantages are explored.
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Apr 1, 2009
By:Michael P. Balogh
"...We will restore science to its rightful place, and wield technology's wonders to raise healthcare's quality and lower its cost. We will harness the sun and the winds and the soil to fuel our cars and run our factories...." — President Barack Obama, 44th President of the US, Inaugural address, 20 January 2009, Washington, DC.
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Columnist Ron Majors discusses some of the practical considerations in the successful application of the popular yet age-old technique of solvent extraction (also known as liquid–liquid extraction, or LLE). After a brief review of the basics, guidelines on the selection of the appropriate extraction solvents and how to use acid–base equilibria to ensure efficient extractions of ionic and ionizable compounds are provided. Problems in LLE and the solutions to these problems are highlighted. A..
Mar 1, 2009
By:Ronald E. Majors
Columnist Ron Majors discusses some of the practical considerations in the successful application of the popular yet age-old technique of solvent extraction (also known as liquid–liquid extraction, or LLE). After a brief review of the basics, guidelines on the selection of the appropriate extraction solvents and how to use acid–base equilibria to ensure efficient extractions of ionic and ionizable compounds are provided. Problems in LLE and the solutions to these problems are highlighted. A newer technique called dispersive liquid–liquid microextraction (DLLME) is introduced.
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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.
Mar 1, 2009
By:John V. Hinshaw
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.
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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
Mar 1, 2009
By:Bart Tienpont, Frank David et al., Pat Sandra
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.
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 | Feb 1, 2009
By:Richard A. Henry
Guest columnist Dick Henry traces the history of HPLC back more than 40 years, starting with his days at DuPont.
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