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Now that I have been at UT Arlington for 10 years, I have had many opportunities to refine my own approaches to teaching, in hopes that the learning curve to achieve meaningful learning for students is not as steep as the one I had to manage.

I got into a discussion with a learned colleague recently regarding the relationship between peak height and flow rate in gradient HPLC. We haven't really resolved the discussion, there are suggestions regarding "peak focussing," the number of column volumes in relation to the gradient volume (number of column volumes per minute), increases in efficiency etc.

Communicating Data: Is Your Transmitter Faulty?

HPLC 2015 - The 42nd International Symposium on High Performance Liquid Phase Separations and Related Techniques

Markes International (Llantrisant, UK) has been awarded a 2015 Queen’s Award for Enterprise in International Trade decreed by Her Majesty The Queen of Great Britain, on the recommendation of the Prime Minister, David Cameron. The awards are announced each year on the Queen’s birthday, 21 April.

Beer from a 1840s shipwreck in the Baltic Sea has been analyzed by a team of scientists at the VTT Technical Research Centre in Finland. Using a variety of chromatography techniques - including gas chromatography coupled to mass spectrometry (GC–MS) and high-performance anion-exchange chromatography (HPAEC) coupled to MS - the team compared the beer with modern-day varieties and found they were not too dissimilar.

Agilent Technologies (California, USA) and Scion Instruments (California, USA) have announced a gas chromatography instrument agreement, which will allow users to operate instruments from both manufacturers in each company’s chromatography data systems.

Exposure to flame retardant additives could be a contributing factor to the occurrence of feline hyperthyroidism (FH) in Swedish cats, according to a new study. The authors also suggest that pet cats can be studied as markers of environmental contamination in the home.

Click the title above to open The Column May 06, 2015 Europe & Asia issue, Volume 11, Number 8, in an interactive PDF format.

Click the title above to open The Column May 06, 2015 North American issue, Volume 11, Number 8, in an interactive PDF format.

The EconoPrep® is designed specifically to automate the difficult, error prone, labor intensive manual processes involved in sample prep for trace analysis. The EconoPrep offers economically priced consumable kits for Environmental and Food Matrices. The system uses reduced solvent making it a green alternative to manual techniques. It automatically performs Extraction, Sample Cleanup and Concentration allowing for same day results. More information Please link to this document and require a form to be filled out.

The EconoPrep® is designed specifically to automate the difficult, error prone, labor intensive manual processes involved in sample prep for trace analysis. The EconoPrep offers economically priced consumable kits for Environmental and Food Matrices. The system uses reduced solvent making it a green alternative to manual techniques. It automatically performs Extraction, Sample Cleanup and Concentration allowing for same day results. More information Please link to this document and require a form to be filled out.

Click the title above to open the LCGC Europe September 2015 Application Notebook, Vol 27 No s9, in an interactive PDF format.

Environmental sample analysis by large-volume injection (LVI) in combination with liquid chromatography–tandem mass spectrometry (LC–MS-MS) is described for polar and nonpolar analytes in both aqueous samples and organic extracts.

Unexpected results from calibration standards create confusion in a clinical liquid chromatography (LC) method.

The 31st Montreux Symposium on LC–MS and MS–MS will be hosted by the International Association of Environmental Analytical Chemistry (IAEAC) at the Aldershof Convention & Exhibition Centre, Berlin?Aldershof, Germany, on 4–6 November 2015.

Recently, I received an inquiry from a reader regarding a problem he encountered with a routine liquid chromatography (LC) method in his clinical laboratory.

When Professor Georges Guiochon passed away last October, at the age of 83, the separation science community mourned the loss of one of the great pioneers of the field.

All sample preparation adds the potential for error to the analytical protocol, so choosing less-complicated techniques will help to reduce inherent error.

A highly sensitive and selective mercuric oxide–based reduction gas detector was successfully used for parts-per-billion level gas chromatography (GC) determination of ethylene in various matrices such as in the monitoring of fruit ripening, ambient air, and industrial solvents.

Here we describe a simple and robust high performance liquid chromatography–diode array detection (HPLC–DAD) method for the simultaneous determination of methotrexate (MTX) and sulphasalazine (SSZ) from plasma. MTX and SSZ are used in combination for the treatment of rheumatoid arthritis. Using two detector wavelengths, 304 nm for MTX and 358 nm for SSZ, we were able to selectively quantitate both analytes during the same chromatographic run. The method was validated using quality control samples for critical analytical performance criteria of recovery, reproducibility, selectivity, accuracy, and precision.

The LC/GC Checker app is designed to provide four approaches to check an LC or GC instrument's performance.

Click the title above to open the LCGC Europe May 2015 regular issue, Vol 28, No 5, in an interactive PDF format.

Click the title above to open the LCGC Europe May 2015 HPLC 2015 Show Guide Supplement, Vol 28, No s5, in an interactive PDF format.

Click the title above to open the LCGC North America May 2015 regular issue, Vol 33 No 5, in an interactive PDF format.

Click the title above to open the May 2015 issue of Current Trends in Mass Spectrometry, Volume 13, Number 2, in an interactive PDF format.

Selected dietary supplements labelled to contain Acacia rigidula have been found to be adulterated with the amphetamine isomer ?-methylphenylethylamine (BMPEA).

A new study presents a proteomics approach to investigate changes at the molecular scale that could control whether or not embyro implantation using IVF is successful.

Researchers from the University of Colorado have characterized flow?back water generated from fracking activities, using a combination of analytical techniques, to determine how best to treat wastewater so that it can be recycled.