| 摘要 |
A method for chromatographically separating analytes of a liquid sample comprises: (i) providing the sample in a conduit (2c); (ii) providing a solvent (14a, b) for the sample; (iii) causing the solvent to simultaneously flow into the conduit (2c) so as to expel the sample from the conduit (2c) and flow into and through a second conduit (2g) so as to exit said second conduit (2g); (iv) simultaneously providing the expelled sample and the exited solvent to a mixing tee-junction (31b) such that the expelled sample and the exited solvent mix thereat; (v) providing the mixture of the expelled sample and the exited solvent to a chromatographic column (18) such that the analytes are transferred to the column and are chromatographically separated therein under the influence of a flow of the solvent, or a different solvent or a mixture of solvents. This enables detection of small levels of organic analyte species in the presence of excess orgnic solvent. |
