Improving SPE disk extraction technology for US EPA wastewater method 625.1

The Horizon 5000 (previously known as SPE-DEX 5000) automated extraction system is a programmable, multipurpose SPE system, capable of processing aqueous samples directly from their original containers. Once the process is initiated, each Horizon 5000 module delivers all the necessary solvents to precondition the sorbent material within the SPE disk, passes the water sample through the disk and, after a preset air-dry time, extracts the sorbed analytes from the disk into a collection vessel using the required amounts of solvents.

This note examines the resuslts from an initiial demonstration of capability (DOC) with one liter samples utilizing automated disk solid phase extraction (SPE) for US method US EPA method 625.1.