Naked eye or fluorescent Al<3+> probe and preparation method and application thereof

Abstract

The invention discloses a naked eye or fluorescent Al<3+> probe and a preparation method and an application thereof, relates to an Al<3+> probe and a detection method thereof, and solves the technicalproblems that an existing Al<3+> probe is relatively few in type, easy to interfere by external environment, relatively high in detection limit and incapable of realizing naked eye detection and real-time detection. The structure of the Al<3+> probe is as shown in the description. The preparation method comprises the following steps of reacting 2-(4-amino)phenyl phenanthroimidazole and p-phthalaldehyde in an acid solvent, adjusting the pH value to separate out solid, and performing suction filtration and drying to obtain a crude product; and recrystallizing and drying the crude product to obtain the naked eye or fluorescent Al<3+> probe. Al<3+> in a solution can be qualitatively detected through naked eye observation of color change and fluorescence intensity change or is quantitatively detected by using a fluorescence intensity standard curve method. The Al<3+> probe can be used in the field of detection of the Al<3+> in water systems or beverages.

Description

technical field [0001] The present invention relates to Al 3+ Probes and their detection methods. Background technique [0002] Aluminum is the most abundant metal in the earth's crust. Aluminum and its alloys are widely used in various industries due to their advantages of corrosion resistance, low density, good thermal and electrical conductivity, and good ductility. A small amount of Al 3+ Will not cause harm to the human body, but excessive Al 3+ It can be combined with protein to directly damage the central nervous system, causing symptoms such as memory loss and mental retardation, which will lead to early aging of people. al 3+ Accumulation in the brain can cause the degeneration of brain nerves, affect intelligence and personality, and even lead to more serious diseases. The World Health Organization (WTO) reported that Al in purified water 3+ The standard content should be lower than 0.2mg / L. Therefore, accurate, quantitative and qualitative detection of Al ...

AI Technical Summary

Problems solved by technology

[0009] The present invention will solve existing Al 3+ Due to the technical problems of fewer types of probes, susceptibility to interference from the external environment, high detection limit, and inability to realize naked-eye detection and real-time detection, a naked-eye or fluorescent Al 3+ Probe and its preparation method and application

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