Stopped-in-loop flow analysis of trace vanadium in water.
The new concept of stopped-in-loop flow analysis (SIL-FA) is proposed, and an SIL-FA method for the catalytic determination of vanadium is demonstrated. In an SIL format, a sample solution merges with reagent(s), and the well-mixed solution is loaded into a loop. The solution in the loop is separated by a six-way switching valve from the main stream. While the reaction proceeds in the stationary loop, the SIL-FA system does not need to establish a baseline continuously. This leads to a reduction in reagent consumption and waste generation compared with traditional flow injection analysis.
Teshima
Norio
N
Department of Applied Chemistry, Aichi Institute of Technology, Toyota, Japan. teshima@aitech.ac.jp
Ohno
Shinsuke
S
Sakai
Tadao
T
D002138:Calibration; D002384:Catalysis; D002413:Cations, Divalent / Q000032:analysis; D017022:Flow Injection Analysis; D007202:Indicators and Reagents; D017942:Nitric Acid / Q000737:chemistry; D013054:Spectrophotometry, Atomic; D014639:Vanadium / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
D002413:Cations, Divalent; D007202:Indicators and Reagents; D014639:Vanadium; D017942:Nitric Acid