Chemiluminescence Determination of Tiopronin by Flow Injection Analysis Based on Cerium(IV) Oxidation Sensitized by Quinine

Fast Determination of Thiacloprid by Photoinduced Chemiluminescence

“…The reduction of Ce(IV) produces excited Ce(III), which is deactivated by emitting light of 350 nm, yielding a weak CL signal. 28–32 Quinine is a good fluorescent substance (Φ = 0.577), having an emission maximum at about 450 nm. 33 Excited Ce(III) transfers energy to the quinine, yielding excited quinine, which is responsible for the strong CL observed.…”

Energy Transfer Processes of Chemiluminescence Reaction Systems with Cerium(IV) Ions and Their Analytical Application: A Review

“…A quinine is a sensitizer of the reaction of thiolcontaining drugs with cerium(IV) in sulphuric acid medium [29][30][31]. Quinine is a good fluorescent substance (φ = 0.577), having an emission maximum at about 450 nm [63].…”

“…Cerium (III), which is formed by the reduction of cerium(IV), is a well-known fluorescent ion, with the maximum emission at λ~355 nm [41][42][43] and therefore, it is a possible CL emitter. Excited sulphur dioxide species (SO 2 *) emit weak light at 300-450 nm [44,45], therefore the compounds showing strong fluorescence, such as rhodamine B [28,46], quinine [29][30][31] or lanthanide ions [32] are introduced to many reaction systems containing Ce(IV) ions. However, the CL intensity is very weak due to the low luminescence efficiency of SO 2 * .…”

“…[27][28][29] [57]. In the medium of sulphuric acid, Ce(IV) [59] and RhB [60] ions occur in the forms :…”

A Novel Equipment-Free Paper-Based Fluorometric Method for the Analytical Determination of Quinine in Soft Drink Samples

“…QN, among its other uses, has been employed as a sensitizing agent due to its exceptional quantum fluorescence efficiency in acidic media [9]. QN has been utilized for the development of many chemiluminescence methods [10] with different oxidants such as cerium(IV) [11], diperiodatonickelate(IV) [12], potassium bromate [13], and permanganate [14].…”