1. Mix‐&‐Read Determination of Mercury(II) at Trace Levels with Hybrid Mesoporous Silica Materials Incorporating Fluorescent Probes by a Simple Mix‐&‐Load Technique
- Author
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Estela Climent, Kornelia Gawlitza, Knut Rurack, Heike Witthuhn, and Mandy Hecht
- Subjects
mercury ,Trace Amounts ,Inorganic chemistry ,02 engineering and technology ,mesoporous materials ,010402 general chemistry ,01 natural sciences ,Cover Profile ,lcsh:Chemistry ,chemistry.chemical_compound ,Crown ether ,Detection limit ,chemistry.chemical_classification ,Aqueous solution ,Full Paper ,010405 organic chemistry ,Chemistry ,General Chemistry ,Mesoporous silica ,Full Papers ,021001 nanoscience & nanotechnology ,Fluorescence ,0104 chemical sciences ,test strips ,lcsh:QD1-999 ,fluorescence ,BODIPY ,dyes/pigments ,0210 nano-technology ,Mesoporous material - Abstract
The synthesis, characterization, and application of mesoporous materials containing boron–dipyrromethene (BODIPY) moieties that allow the sensitive and selective detection of HgII in aqueous environments by fluorescence enhancement is reported. For this purpose, BODIPY dye I containing a thia‐aza crown ether receptor as the fluorescent probe for the detection of HgII in aqueous environments is encapsulated into mesoporous materials to avoid self‐quenching or aggregation in water. Determination of HgII is accomplished within a few seconds with high selectivity and sensitivity, reaching a limit of detection of 12 ppt. The determination of trace amounts of HgII in natural waters and in fish extracts is demonstrated by using our sensing material. The incorporation of the material into several μ‐PAD strips yields a portable, cheap, quick, and easy‐to‐handle tool for trace HgII analysis in water.
- Published
- 2018