Analytical Sciences

Abstract − Analytical Sciences, 33(8), 879 (2017).

Experimental Confirmation of SrF(CH3F)0-4+ and SrF(H2O)(CH3F)0-3+ Cluster Ions Generated in the Reaction-cell of ICP-QMS/QMS
Yanbei ZHU,* Kazumi NAKANO,** and Yasuyuki SHIKAMORI**
*National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8563, Japan
**Agilent Technologies Japan, Ltd., 9-1 Takakura, Hachioji, Tokyo 192-8510, Japan
Multiple unknown high-order cluster ions were observed as the results of ion-molecule reactions between strontium ions and fluoromethane molecules in the reaction-cell of an inductively coupled plasma tandem quadrupole mass spectrometer (ICP-QMS/QMS). In order to elucidate the structures of these unknown cluster ions, isotope-enriched fluoromethane (CD3F) was used as the reaction-cell gas compared to natural fluoromethane (CH3F). As results, SrF(CH3F)0-4+ and SrF(H2O)(CH3F)0-3+ cluster ions were experimentally confirmed in the present work, while SrF(H2O)(CH3F)0-3+ cluster ions in the reaction-cell of ICP-QMS/QMS were observed and confirmed for the first time in the world.