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The CL signal of an ultra\u2010weak system was strongly enhanced in the presence of QDs. The application of CdTe QDs\u2013fluorescein\u2013KIO<jats:sub>4<\/jats:sub> system is reported for the first time. It was found that catechol had a diminishing effect on the CL reaction. Under optimal experimental conditions, CL intensity decreased linearly in a 1 to 100\u00a0\u03bcM catechol concentration range, with a 0.18\u00a0\u03bcM detection limit. A possible reaction mechanism was proposed according to the results of kinetic analyses, CL spectra, ultraviolet\u2013visible and fluorescence spectra. The results pointed to an efficient energy transfer between the CL energy donor CdTe QDs and acceptor fluorescein. Finally, the CL method was successfully applied to the determination of catechol in environmental water samples.<\/jats:p>","DOI":"10.1002\/bio.3484","type":"journal-article","created":{"date-parts":[[2018,4,30]],"date-time":"2018-04-30T06:35:08Z","timestamp":1525070108000},"page":"871-876","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Enhanced chemiluminescence of the fluorescein\u2013KIO<sub>4<\/sub> system by CdTe quantum dots for determination of catechol"],"prefix":"10.1002","volume":"33","author":[{"given":"Na","family":"Cai","sequence":"first","affiliation":[{"name":"The Key Laboratory of Luminescence and Real\u2010time Analytical Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering Southwest University  Chongqing P. R. 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