Organic reagents producing fluorescence:

Although Mg, Cd, Zr, Zn, are analysed through complex formation along with organic reagent, few of the metals could be analysed through methods based on phenomena of quenching;  the most favoured metals being Ga, Al and Be.

The transition elements rarely form fluorescent chelates therefore, copper is one exception to this rule. Amongst anions borate has maximum number of methods available for analysis. Then we have fluoride and to a few extent sulphide anion which is commonly analysed through substitution reaction.