A fiber optic sensor with a metal organic framework as a sensing material for trace levels of water in industrial gases

Abstract Industrial gases such as nitrogen, oxygen, argon, and helium are easily contaminated with water during production, transfer and use, because there is a high volume fraction of water in the atmosphere (approximately 1.2% estimated with the average annual atmospheric temperature and relative humidity). Even trace water ( 2 O, dew point 2 O was 23 s. The standard deviation obtained for daily analysis of 1.0 ppmvH 2 O standard gas over 20 days was 9%. Furthermore, the type of industrial gas did not affect the sensitivity. These properties mean the sensor will be applicable to trace water detection in various industrial gases.