Fig. 1. Diagram of the on-line cloud point extraction system for preconcentration of manganese. S: sample; RS: solution of reagent Me-BTABr and surfactant Triton X-114; E: eluent;
T: confluence; W: waste; B: bath with a thermostat; L1: sample loop, volume=3000 μL; L2: reaction coil, length=350 cm; C: minicolumn; V1 and V2: manual six-port rotary valves;
P1 and P2: peristaltic pumps; FAAS: flame atomic absorption spectrometer.