LCGC North America-03-01-2017

Traditional extraction methods for food samples, such as liquid-liquid extraction and Soxhlet extraction, are often time-consuming and require large amounts of organic solvents. Therefore, one of the objectives of analytical food safety studies currently has been the development of new extraction techniques that can improve the accuracy and precision of analytical results and simplify the analytical procedure.

Part V of this series takes a closer look at discriminant analysis (DA). Discriminant analysis is a supervised method, meaning that it involves some previous knowledge of your samples.

When considering column efficiency, more is not always better. We look at some ways to quickly estimate the effects of changes in column length and particle diameter rather than trying the experiments in the laboratory.

Improve results by optimizing the injection, column, and detection.

Gas chromatographers can control several variables that affect their separations: carrier-gas flow, column temperature, column dimensions, and stationary phase chemistry. When faced with less than optimum resolution or separation speed, a strategy of changing just one variable at a time can be more productive than trying to hit the goal in one attempt. This month's GC Connections examines how to use such a plan to obtain better GC results.

Rudolf Krska, from the University of Natural Resources and Life Sciences in Vienna, Austria, talks about the latest analytical techniques and challenges facing analysts involved in the evolving field of mycotoxin analysis.

Upon testing with 919 samples, this method produced excellent results.

PALME almost eliminates consumption of hazardous solvents.

We explain the principles of EC and demonstrate its use to enrich anionic pollutants and cationic drugs in environmental samples.

Gas chromatography–mass spectrometry (GC–MS) is a widely used technique for food safety and quality assurance applications.

Click the title above to open the LCGC North America March 2017 regular issue, Vol 35 No 3, in an interactive PDF format.