| abstract |
The present invention provides an apparatus capable of concentrating and collecting at an efficiency of 90% or more, and automating a series of operations with little need for complicated preparation operations at the collection site. A device for collecting gaseous components having tritium, which is a radioactive isotope of hydrogen, and carbon, which is a radioactive isotope of carbon, in an outdoor or indoor air sample, and which is continuously sucked. The gaseous component in the atmospheric sample to be heated is brought into contact with a heated oxidation catalyst and continuously converted to tritium water and carbon dioxide, and then has a high solubility or affinity for the atmospheric sample and tritium water and carbon dioxide. One type of absorbing solution that is highly miscible or selectively reacts is continuously brought into contact, and tritium water and carbon dioxide gas are simultaneously concentrated and collected in the absorbing solution. [Selection] Figure 1 |