SDS Volume (838)

Volume 38. Hydrocarbons in Water and Seawater, Part II, p None

Original Measurements

Rossi, S. S.; Thomas, W. H.; Environ. Sci. Technol. 1981, 15, 715-6.

Variables:

Room Temp: 15 - 25 °C
Salinity: 35 g/kg sln

Prepared by:

D. Mackay, W.Y. Shiu

Method/Apparatus/Procedure:

Saturated solutions was prepared by equilibrating seawater with an excess of hydrocarbon for 24 hrs in a constant temperature gyrotary shaker followed by 12 hr stationary period. A 100 mL-aliquot was extracted three times with n-hexane. The concentrated hexane extract was analyzed by a gas chromatograph equipped with a flame ionization detector to determine the hydrocarbon concentration.

Source and Purity of Materials:

1. Acenaphthene: from Aldrich Chemical Co. of 99% purity and doubly distilled from distilled methanol, n-Hexane: doubly distilled in glass, seawater: collected off Scripps Pier and was filtered twice through 0.22 µm membrane and twice extracted with n
2. Seawater: collected off Scripps Pier and was filtered twice through 0.22 µm membrane and twice extracted with n-hexane then its salinity was adjusted to 35%.

Estimated Errors:

Ambient temperature: ±0.1°K
Mass concentration (m/v) (1): ±2%