Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10559891 | Talanta | 2011 | 5 Pages |
Abstract
A new type of flow injection analysis (FIA) system combined with an extremely high temperature reactor, namely hydrothermal flow injection analysis (HT-FIA), has been successfully constructed for the first time. Fundamental characteristics of HT-FIA system, such as limit temperature, pressure, and flow rate, were examined as an analytical tool. To demonstrate the potential of HT-FIA, the catalytic activity of Ir(IV) for the degradation of a water-soluble porphyrin, 5,10,15,20-tetraphenyl-21H,23H-porphinetetrasulfonic acid (TPPS), was applied for the determination of trace amounts of Ir(IV). Although the indicator reaction is very slow at room temperature, HT-FIA system enables to accelerate the reaction. A linear calibration curve was acquired at 10â8Â M level of Ir(IV) and the interferences of platinum group metal ions were examined. The detection limit of Ir(IV) was 5.8Â ÃÂ 10â9Â M and a fairly high-throughput analysis, of which more than 30 samples can be analyzed within 80Â min, was achieved.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Kunio Kawamura, Keisuke Ikoma, Shukuro Igarashi, Hideaki Hisamoto, Toshio Yao,