A Terbium(III) Luminescent Probe for Quantifying Bicarbonate Levels in Ocean Water

Abstract

Given the complex media of ocean water, facile determination of HCO₃^– concentration in situ remains difficult. Herein, we report the development of an indicator displacement probe to quantify HCO₃^– at levels relevant to ocean water. The probe has high selectivity for HCO₃^– over competing ions (Cl^–, Na⁺, SO₄^2–, Mg²⁺, Ca²⁺) for facile and accurate in situ measurements.