Fluorescent method to quantify copper or platinum based on catalysis

A method of identifying or quantifying platinum in a test sample comprising:

• mixing, thereby producing a reaction mixture:
• the test sample;
• a triaryl phosphine represented by Formula 1b,
• wherein R1 is fluoro, C1-6 alkoxy, or C1-6 alkyl;
• or Formula 1c,
• optionally dissolved in a solvent;
• and
• an allyl fluorochrome ether or carbamate, that, when subjected to a deallylation reaction to produce a deallylated fluorochrome ether or carbamate, results in an increase in fluorescence of the deallylated fluorochrome ether or carbamate as compared to the allyl fluorochrome ether or carbamate of at least 10 times at a fluorescence excitation wavelength of the deallylated fluorochrome ether or carbamate;
• reacting the test sample, the triaryl phosphine, and the allyl fluorochrome ether or carbamate for a time, temperature, and pH sufficient to cause the deallylation of the allyl fluorochrome ether or carbamate in presence of platinum in the sample;
• and
• identifying or quantifying platinum in the test sample by determining or quantifying fluorescence of the reaction mixture when illuminated at the excitation wavelength of the deallylated fluorochrome ether or carbamate.