Product Focus: GC Columns
As regulators have redefined environmental methods for low-abundance analytes, and demanded the analysis of more analytes, column manufacturers have done well to provide greater sensitivity and selectivity. “Adding more compounds to the list causes co-elution issues that are difficult to resolve,” says Kory Kelly, technical manager for GC and environmental at Phenomenex (Torrance, CA).
One strategy for meeting the challenges of modern environmental analysis is to fine-tune selectivity to specific methods, e.g., pesticides in water or halogenated contaminants in soil, or to specific analyte categories. At the same time vendors have improved detectors, offered multiple detector modes, and introduced sample preparation methods that remove matrix while enriching analytes.
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