The SPE-assisted europium (III) based complex fluorometric assay for the highly selective and sensitive detection of manganese (II) in water.


Department of Instrumentation and Analytical Chemistry, Key Lab of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, PR China. Electronic address: [Email]


Detection of trace manganese (Ⅱ) ion (Mn2+) is crucial to water safety. Here, commercially available PS-DVB microspheres were sulfonated and then filled into the SPE column in order to separate Mn2+ from complex matrices. Meanwhile, europium (III) complex was prepared with a simple "one pot" method, and its fluorescence intensity was quenched gradually with the increase of Mn2+ concentration. Europium (III) complex combined with home-made SPE column was utilized for highly selective and sensitive measurement of Mn2+. The detectable concentrations of Mn2+ can be low as 0.2 μM, which was less than the drinking water guidelines. Consequently, this new method is promising to assess the content of Mn2+ rapidly and accurately in real-world water samples.


Europium (Ⅲ) complex,Fluorescence detection,Manganese (Ⅱ) ion,Solid phase extraction,

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