APPARATUS AND METHOD FOR MEASURING SOLUBILITY OF GAS

A gas solubility measurement device is provided to measure stepwise dissolution amount and solubility according to time passage by one time gas injection/discharge by calculating the dissolution amount from pressure difference of injected gas without putting out specimens. A gas solubility measurement device comprises a test pipe(25), a standard pipe(26), a pressure difference meter(36) and a calculation unit(41). The test pipe is a hollow tubing pipe, inserted by a specimen corresponding to solvent for solving gas, and maintains a sealing state after gas injection. The standard pipe is a tubing pipe having the same material and volume as the test pipe, and maintains the sealing state after the gas injection. The pressure difference meter measures pressure difference of the test pipe and the standard pipe in predetermined space after the gas injection. The calculation unit calculates gas solubility of the specimens based on the pressure difference data transferred from the pressure difference meter.