Recent Advances in Solid Phase Extraction for the Determination of a Full Range of Organic Compounds from Challenging Samples

Oral Presentation

Prepared by D. Gallagher, M. Ebitson
Horizon Technology, Inc., 16 Northwestern Drive, Salem, NH, 03079

Contact Information: dgallagher@horizontechinc.com; 603-386-3620


ABSTRACT

Solid Phase Extraction (SPE) is a well know and useful technique for the extraction of organic compounds from aqueous samples. And while many EPA methods exist which allow, or demand the use of SPE, there are still two major challenges that SPE must overcome – the ability to successfully capture all of the target analytes from the water sample without breakthrough, and the ability to process samples with a high particulate loading, without plugging the SPE bed.

This paper will address both the chemical and physical issues, and present data which shows that with proper use, that SPE can successfully be used to process typical environmental samples, such as EPA methods 8270 and 625, effectively, efficiently, and provide comparable, or better data than achieved now with conventional liquid/liquid extraction techniques.

Additionally, these SPE techniques can be completely automated, which significantly reduces costs further, by allowing labor to be re-purposed.