SDS Volume (281)
Volume 37. Hydrocarbons in Water and Seawater, Part I, p 192
Original Measurements
May, W. E.; Wasik, S. P.; Freeman, D. H.; Anal. Chem. 1978, 50, 997-1000
Variables:
Room Temp:
25
°C
Salinity:
0 - 40 g(2)/kg sln
Prepared by:
Method/Apparatus/Procedure:
A saturated solution of (1) was prepared by pumping salt water through a 'generation column' which was packed with glass beads coated with 1% by weight of (1). The saturated solution was extracted with an 'extractor column' packed with a superficially porous bonded $\ce{C18}$ stationary phase, then a wateracetonitrile solvent was passed through for extraction. The extract was introduced into a liquid chromatograph and the concentration of (1) was measured with a UV detector.
Source and Purity of Materials:
- Greater than 97% pure.
- reagent grade.
- distilled from potassium-sodium hydroxide and passed through an XAD-2 column.
Estimated Errors:
Ambient temperature: ±0.05 K
Mass concentration (m/v) (1): Ks ±0.006
So ±10
Components:
- Benzene, $\ce{ C6H6 }$; [71-43-2] NIST WebBook
- Sodium chloride, $\ce{ NaCl }$; [7647-14-5] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
The solubility of benzene in aqueous sodium chloride is reported in terms of the Setschenow equation:
log(SoS) = KsCs
where;
Sois the solubility of (1) in water (mg/L)
S is the solubility of (1) in saline solution (mg/L)
Ks is the Setschenow constant (L/mol)
Cs in the concentration of sodium chloride (mol/L)
evaluating the equation for S over the range of Cs 0-0.7 mol/L, Ks = 0.175 with So = 1791.
The corresponding mass percent and mole fraction x1, at salinity = 35 g(2)/kg sln calculated by the compilers are 0.1365 g(1)/100 g sln and 3.22 × 10-4.
