| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid chromatograph equipped with a solvent recycle device and its recovery method for recovering a regenerated solvent including no moisture from waste liquid generated from G. P. C or the like. SOLUTION: This method has this liquid chromatograph 11 in a circulatory system, and this solvent recycle device 31. The method has, between a detector 19 and a first solvent storage vessel 12 and/or a second solvent storage vessel 13, at least a moisture removing column 51 filled with zeolite granule (molecular sieve) 53 containing an indicator in order to remove moisture from a moving phase introduced as the waste liquid W, a pressure-tight distillation part 32 formed so as to freely control heating to distillate the moving phase after moisture removal in inert gas, and a cooling part 45 formed so as to introduce the vapor in the pressure-tight distillation part 32 together with the inert gas, cool, liquefy it, and to freely reflux into the solvent storage vessels. Hereby, the regenerated solvent S2 containing no moisture is recovered from the waste liquid W. The liquid chromatograph and the solvent recycle device can be arranged in a non-circulatory system.
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