Dionex Automated Solid-Phase Extraction Solutions for EPA Methods 1664A, 608, and 625
Dionex Application Notes 817 and 818 describe using automated solid-phase extraction (SPE) versus liquid-liquid extraction (LLE) for the determination of oil and grease from liquid (typically water) samples to meet the requirements of EPA Method 1664.
EPA Method 1664, Revision A, n-Hexane Extractable Material (HEM; Oil and Grease) and Silica Gel-Treated n-Hexane Extractable Material (SGTHEM; Non-polar Material) by Extraction and Gravimetry.
Dionex Application Notes 817 and 818 describe using automated solid-phase extraction (SPE) versus liquid-liquid extraction (LLE) for the determination of oil and grease from liquid (typically water) samples to meet the requirements of EPA Method 1664. The Dionex AutoTrace 280 SPE instrument (available in disk and cartridge configuration) automates the conditioning, rinsing, loading, drying, and extraction steps, and can simultaneously process 1 - 6 samples. The SPE technique provides a more reliable, less labor-intensive solution to liquid extraction, and uses far less solvent than LLE. In addition, emulsion formation is eliminated by using SPE.
Dionex AN 817 (Cartridge Configuration)
www.dionex.com/AN817
Dionex AN 818 (Disk Configuration)
www.dionex.com/AN818
EPA Method 608, Methods for Organic Chemical Analysis of Municipal and Industrial Wastewater, Organochlorine Pesticides, and PCBs.
Dionex Application Brief 875 describes using the Dionex AutoTrace SPE instrument to automatically and quickly analyze samples with high amounts of suspended solids, such as wastewaters and streams. The solvent delivery syringe is able to deliver solvent under sufficient positive pressure which is not possible with vacuum based systems. The samples that contain levels of suspended solids greater than 100mg/L may require special pre-handling.
Dionex AB 875
www.dionex.com/AB875
EPA Method 625, Methods for Organic Chemical Analysis of Municipal and Industrial Wastewater, Organochlorine Pesticides and PCB.
Dionex Application Brief 876 describes using the Dionex AutoTrace SPE instrument to automatically and quickly analyze samples with high amounts of suspended solids, such as wastewaters and streams. The samples that contain levels of suspended solids greater than 100mg/L may require special pre-handling.
Dionex AB 876
www.dionex.com/AB876