| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for measuring a gas soluble in liquid such as ammonia with satisfactory reproducibility and high sensitivity, a gas-liquid phase separation method used in the method, and a microchannel chip therefor. <P>SOLUTION: The microchannel chip is equipped with: a microchannel provided in a substrate; and a gas-liquid phase separation microchannel connected to the downstream end of the microchannel and having a depth of 10μm-100μm, the upper part of which is covered with a porous film. In the gas-liquid phase separation method, a two-phase flow consisting of a gas phase and a liquid phase passes through the microchannel, wherein a liquid-phase flow passes through a peripheral edge portion of the microchannel and a gas-phase flow passes inside the peripheral edge portion, the gas phase is removed from the two-phase flow to leave the liquid-phase flow. The method involves: passing the two-phase flow through the microchannel within the microchannel chip; leading it to the gas-liquid phase separation microchannel; passing it through this region; and thereby discharging the gas-phase flow to the outside from the gas-liquid phase separation microchannel through the porous film. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
