Водорастворимые КТ InP/ZnS Как Маркеры Дибутилфталата. Влияние Спирта На Растворимость Фталатов

The interaction of semiconductor water-soluble InP/ZnS-PEG-COOH quantum dots (QDs) with dibutyl phthalate (DBP) in fresh and sea water samples has been studied. It was found that an increase in the DBP concentration in a fresh water with QDs leads to an increase in the QD luminescence (PL) amplitude. The PL increase is caused by the DBP molecules localization in the QD Onsager cavity and the passivation of its surface. An increase in the ethanol concentration enhances the solubility of DBP and can serve as a means of raising the sensitivity when registering phthalates in aqueous media. Observations of the PL dynamics in sea water samples from the Black, Mediterranean, and White seas showed the individual character of the interaction of InP/ZnS QDs with DBP, as well as in the case of an increase in ethanol concentration. It has been established that plastic packaging containing substances with a few percentage of alcohol is potentially hazardous to human health.