| 摘要 |
PURPOSE:To obtain an injecting device which can be automatized easily, and can inject simultaneously the samples of a trace into two columns with high reproducibility by rotating simultaneously a pair of rotors held therebetween by valve seats and having a weighing hole, centering around a rotary axis by a prescribed sequence. CONSTITUTION:Ceramics discoid rotors 103, 104 held therebetween by discoid valve seats 101, 102 are provided. The rotors 103, 104 rotate simultaneously, and a weighing hole is formed due to a fact that two disks are superposed. In this state, in a state for injecting a sample into capillary columns 1a, 1b, the rotors 103, 104 rotate, the weighing hole filled with the sample by a microsyringe 9 is connected between the columns 1a, 1b, the center part of the weighing hole is connected to the passage of a buffer liquid, and the sample is forcedly fed into the columns 1a, 1b by hydraulic pressure of the buffer liquid. In such a manner, the samples of a trace of the columns 103, 104 can be injected simultaneously, and the samples whose moving directions are different can be measured simultaneously. The injection quantity of the sample is determined by the inner capacity of the weighing hole, the connection time, and the head pressure of the buffer liquid. |
