[AAS06-P29] Development of a large volume sampling system for measuring stable isotope analysis of carbonyl sulfide
Keywords:Carbonyl sulfide, Sulfur isotope, atmospheric trace components
Recently, our group developed new method measuring sulfur isotopic composition of OCS using fragmentation ions S+. However, for applying our method to air, there is problem in collection over 8 nmol of OCS from air. Therefore, we developed OCS collection system in air.
For developing large volume collection system, we referred to the large volume collection system for carbon isotope measurement method for halocarbons. The large volume sampling system were collected volatile organic compounds including OCS from up to 500 L in air for 100 min. At the presentation, we report that OCS collection efficiency by using our collection system and the OCS isotopic compositions in air were presented. Additionally, we introduce the collected volatile organic compound with OCS in this system and discuss the possibility of a new development to atmospheric chemistry.