Photodynamic Fluorescent Metal Ion Sensors with Parts per Billion Sensitivity
作者:Jeffrey D. Winkler、Corinne M. Bowen、Veronique Michelet
DOI:10.1021/ja974181p
日期:1998.4.1
and spectroscopic study of the first spiropyrandinolines that function as sensors for metal ions in the partsperbillion range. These systems operate by either photochemically or chemically induced reversible formation of merocyanine metal ion complexes. The application of this novel photodynamic sensing material to sensor technology is discussed.
Process to measure PPB levels of dissolved copper in jet fuels and other non-aqueous fluids using a colorimetric process
申请人:——
公开号:US20030166292A1
公开(公告)日:2003-09-04
A method of measuring the concentration of metal ions in a sample comprising the steps of: providing a sample comprising a nonpolar, liquid hydrocarbon, suspected of containing a metal ion; adding a dye such as a spirobenzopyran dye or bathocuproine and a reducing agent to the sample; wherein the dye forms a complex with the metal ion; wherein the complex has a spectral shift in light absorbance relative to the dye; observing the spectral shift; and calculating the concentration of the metal ion in the sample.