Patent ID: 7845208
Filing Date: 2010-12-07
Classification: G01N

Abstract:
1. An apparatus for detecting a volatile dissolved substance, comprising: a sample vessel capable of holding therein an approximately fixed amount of liquid with leaving a space at an upper inner section thereof; a nozzle capable of blowing off bubbles into the liquid held in the sample vessel; a pressurized gas feeding device capable of feeding pressurized gas to said nozzle for the blowing of the bubbles; wherein within a communication passage communicating with the upper section of the sample vessel, there being exposed a detecting portion of a sensor capable of detecting a volatile component, so that the sensor can detect the volatile component which has evaporated from the liquid in the sample vessel and entered the communication passage; at least one liquid vessel capable of holding the liquid therein; a feeding mechanism capable of feeding the liquid of said liquid vessel to said sample vessel; an overflow mechanism including an overflow pipe connected with the sample vessel for causing an amount of the liquid exceeding said approximately fixed amount to overflow from said sample vessel to the outside thereof through the overflow pipe; a valve capable of selectively connecting a liquid feeding passage from the liquid vessel to the sample vessel and a liquid discharging passage to the sample vessel; a valve for opening and closing the communication passage; and a valve for opening and closing the overflow pipe; wherein when the liquid discharging passage is communicated with the sample vessel, the communication passage and the overflow pipe are shut off, and pressurized gas is fed to the nozzle, the liquid in the sample vessel is discharged to the outside of the sample vessel via the liquid discharging passage.