A portable and intelligent logic detector for simultaneous and in-situ detection of Al and fluoride in groundwater.

To develop a convenient and intelligent detector for simultaneous and in-situ detection of Al and F in groundwater, a novel organic probe called RBP has been prepared. With the increase of Al, RBP showed a significant fluorescence enhancement at 588 nm, and the detection limit was 0.130 mg/L. After combining with fluorescent internal standard CDs, the fluorescence of RBP-Al-CDs at 588 nm was quenched due to the replace of F for Al, while the CDs at 460 nm remained unchanged, and the detection limit was 0.0186 mg/L. For convenient and intelligent detection, an RBP-based logic detector has been developed for simultaneous detection of Al and F. Within the ultra-trace, low concentration, and high concentration range of Al and F, the logic detector can achieve rapid feedback on their concentration levels ("U", "L" and "H") through different output modes of the signal lamps. The development of logical detector is of great significance for studying the in-situ chemical behavior of Al and F and for daily household detection.