| 摘要 |
PURPOSE:To make it possible to accurately and simply detect the concn. of carbonyl sulfide (COS), by mixing hydrogen with gas containing COS and converting COS to methane by catalytical decomposition before detecting methane by a hydrogen flame ionization detector (FID). CONSTITUTION:After a gaseous specimen 1 was passed through a separation column 2 to separate COS in the specimen, said specimen is mixed with hydrogen 3 for reduction and FID. Subsequently, the specimen is contacted with a hydrogenating catalyst, for example, Raney nickel in a reaction furnace 4 to convert COS to methane which is, turn, detected by FID5. As nickel, reducing nickel having diatomaceous earth as a carrier and supporting Raney nickel is used. By this method, the concn. of COS can be accurately and simply detected. |
