Terbium Tetra‐Sulfosalicylate Complex as Quantitative Luminescent Sensing of Chromate Ions with High Selectivity and Sensitivity.

In this study, a terbium(Ш) complex, Tb(SSA)4 (SSA = sulfosalicylate), was synthesized and employed to detect toxic chromate anion (CrO42−) as a visually identifiable probe. Luminescence investigations confirmed that the Tb complex is an excellent probe with high selectivity, high sensitivity (I0/I100 μM = 9.5), and a low detection limit (2.8 × 10−8 M), targeting CrO42− in aqueous solution. The simple fluorescence‐based probe can be quickly and easily prepared, and enables the reliable, visual detection of CrO42− ion in daily applications. [ABSTRACT FROM AUTHOR]