AB801: Automated Solid-Phase Extraction (SPE) of Endocrine Disruptors in Water

Instrument Type: Automated Sample Prep

Endocrine disrupting compounds (EDCs) include a wide range of compounds that have the potential to interfere with the body’s endocrine system. Drinking water supplies need to be tested for the presence of EDCs because of their effect on hormones. The solid-phase extraction (SPE) method described in this Application Brief provides provides a quick and simple means of concentrating the components using controlled flow rates and volumes that will consistently produce good recoveries.

AN319: Extraction of Organophosphorus Pesticides Using Accelerated Solvent Extraction (ASE)

Instrument Type: Automated Sample Prep

The use of ASE in the extraction of OPP compounds from solid wastes is a more convenient, faster, and less solvent-intensive method than previously available. OPP recoveries by ASE are equivalent to recoveries from Soxhlet and other methods. ASE also avoids the problem of multiple washing procedures associated with sonication. This method is applicable to the extraction of water-insoluble or slightly water-soluble organophosphorus pesticides in preparation for gas chromatographic measurements. This method is applicable to soils, solid wastes, and sediments containing 250–2500 μg/kg of OPPs.

AN343: Determination of Pesticides in Large-Volume Food Samples Using Accelerated Solvent Extraction (ASE)

Instrument Type: Automated Sample Prep

Accelerated Solvent Extraction (ASE) is an extraction technique that speeds the extraction process and reduces the total amount of solvent used. The system uses conventional solvents at elevated temperatures and pressures, which results in improved extraction kinetics. The Dionex ASE 300 has the capability to extract samples with volumes as large as 100 mL. This application note reports on the use of the ASE 300 for the determination of organophosphorus pesticides (OPPs) in fruits and vegetables.

Targeted analysis of 6 pesticides in milk utilising a QuEChERS sample preparation approach and GC-MS detection

Instrument Type: GCMS

The Thermo Scientific Trace 13xx series GC with ISQ is applied for the detection of pesticides in milk. Sample analysis was performed utilising a QuEChERS extraction/cleanup workflow followed by separation on a Thermo Scientific TraceGOLD TG-5SilMS 30m x 0.25mm, 0.25µm column with MS detection.