Components:
Original Measurements
Rossi, S. S.; Thomas, W. H.; Environ. Sci. Technol. 1981, 15, 715-6.
Variables:
Ambient temperature: One temperature: 25 °C
Prepared by:
Method/Apparatus/Procedure:
500 mL of water and an excess of (1) were equilibrated for at least 24 h in a 1 L Erlenmeyer flask placed in a constant temperature (± 0.1°C) gyrotary shaker (200 rpm). After a 12 h stationary equilibration period, 100 mL of saturated solution was drained through a glass-wool plug into a calibrated separatory funnel. Toluene was extracted (>99%) by passing known volumes through 0.6 x 6 cm columns of a superficially porous bonded C18 stationary-phase adsorbant and eluted with trichlorofluoromethane. Toluene levels in eluates were determined on a Hewlett-Packard Model 5840A gas chromatograph equipped with a flame ionisation detector and an electronic integrator using a 1/8 in x 8 ft stainless-steel column of 10% TCEP on 10/120 Chromsorb or a WCOTSP-2100 glass column (0.25 mm x 30 m). Hydrocarbon concentrations in eluates were additionally determined by UC spectrophotometry.
Source and Purity of Materials:
- Burdick & Jackson; purified by triple distillation in glass.
- Double distilled in all-glass apparatus; free of trace organics.
Estimated Errors:
Ambient temperature: ±0.1°C
Mass concentration (m/v) (1): ±6.1 microg/g (std. dev. for 6 determinations)
