An electronic integrator or other suitable method of measuring peak areas. Pipets for diluting standards. A Glenco 1-mL dispenser is used to dispense the solvent for desorption. Volumetric flasks, for preparing standards. Xylene, chromatographic grade.
Ethylene dibromide, reagent grade.
Sample Preparation 3.3.1. The front and back sections of each sample are transferred to separate 2-mL vials. Each section is desorbed with 1.0 mL of xylene. The vials are sealed immediately and allowed to desorb for 30 min with intermittent shaking. Standard preparation 3.4.1.