Non-azo 1,8-naphthalimide dyes for the detection and...

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G01N 31/22 (2006.01) C07D 221/14 (2006.01) C09B 57/08 (2006.01) G01N 21/64 (2006.01) G01N 21/77 (2006.01)

Patent

CA 2147876

The use of a class of non-azo 1,8-naphthalimide dyes for the detection and quantitation of a paramagnetic metal cation in a non-aqueous medium and some of the dyes that will complex with a paramagnetic metal cation. The concentration of the par- amagnetic metal cation is determined by monitoring differences in the detected fluorescent emission spectra of the non-azo 1,8-naphthalimide dye solution when it is mixed with paramagnetic metal cations present in the non-aqueous medium. The de- tected fluorescent emission spectra will vary in relation to the presence or amount of the paramagnetic metal cation in the mix- ture.

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