| 摘要 |
PURPOSE:To observe continuously and with high response by a method wherein pure water is poured into a water bath open to the atmosphere and a measuring means of conductivity or specific resistivity is provided to a drain outlet. CONSTITUTION:Pure water whose specific conductivity is not less than 15MOMEGA. cm is supplied into a water storage bath 1 whose top surface has natural contact with the atmosphere from a water supply inlet 2 while the flow is adjusted by a valve 3. Excess drain water in a drain water sample taking out bath 4 is poured out through a drain outlet 5 at the rate of about 0.01m<3>/hr and at the same time, while water is supplied to a sodium ion electrode meter 7 by a pump 6, the surface of the pure water in the water storage bath 1 itself is maintained constant. While the pure water is poured into the water storage bath continuously at the constant flow rate, sea salt particles in the atmosphere are dissolved naturally into the pure water to become ions and the change of the specific resistivity of the pure water caused by those ions is continuously measured by a specific resistivity meter 9 whose sensor 8 is provided to the drain water sample taking out bath 4 to observe the salt concentration in the atmosphere. |
