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A nickel ion acceptor compound, synthesis thereof and applications of the compound

A nickel ion and compound technology, applied in the field of cation detection, can solve problems such as cumbersome methods, high cost, and influence on popularization and application

Inactive Publication Date: 2014-12-10
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can realize high-sensitivity and high-selectivity detection of trace nickel ions in aqueous media, its preparation process is relatively complicated and the cost is high; Affected its promotion and application

Method used

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  • A nickel ion acceptor compound, synthesis thereof and applications of the compound
  • A nickel ion acceptor compound, synthesis thereof and applications of the compound
  • A nickel ion acceptor compound, synthesis thereof and applications of the compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Synthesis of receptor compounds

[0037] Mix 8-aminoquinoline (2mmol) and 2-hydroxynaphthaldehyde (2mmol) in absolute ethanol (30mL), add glacial acetic acid (0.5mL), stir at 75°C for 4h, cool and suction filter after the reaction , to obtain a red solid, which was rinsed several times with absolute ethanol to obtain the product —— 1-(Quinoline-8-imine)methylenenaphthol. Yield: 79.8%.

[0038] 2. Ni 2+ Preparation and detection of test paper

[0039] (1) Ni 2+ Preparation of test strips

[0040] Cut the filter paper into a square of 8 cm × 8 cm, and use 0.5 mol L -1 Soak in dilute hydrochloric acid for 1 hour. After washing with distilled water several times, filter with suction on the Buchner funnel while washing with distilled water until the filtrate is neutral. Remove the water by suction filtration, and dry the washed filter paper in a vacuum oven. The main compound was dissolved in DMSO solution to prepare a concentration of 2.0×10 -3 mol L -1 DMSO ...

Embodiment 2

[0044] 1. Receptor synthesis

[0045] Mix 8-aminoquinoline (2mmol) and 2-hydroxynaphthaldehyde (2.2mmol) in absolute ethanol (30mL), add glacial acetic acid (0.5mL), stir at 80°C for 6h, cool and pump Filter to obtain a red solid, rinse several times with absolute ethanol to obtain the product —— 1-(Quinoline-8-imine)methylenenaphthol. Yield: 85.3%.

[0046] 2. Ni 2+ Preparation and detection of detection test paper: same as embodiment 1.

Embodiment 3

[0048] 1. Synthesis of receptors: Mix 8-aminoquinoline (2mmol) and 2-hydroxynaphthaldehyde (2.4mmol) in absolute ethanol (30mL), add glacial acetic acid (0.5mL), and stir at 85°C 8h, after the reaction was completed, it was cooled and suction filtered to obtain a red solid, which was rinsed several times with absolute ethanol to obtain the product —— 1-(Quinoline-8-imine)methylenenaphthol. Yield: 80.6%.

[0049] 2. Ni 2+ Preparation and detection of detection test paper: same as embodiment 1.

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Abstract

The invention provides a nickel ion acceptor compound that is 1-(quinoline-8-imino)methylenedinaphthol and a synthesis method thereof and belongs to the technical field of kation detection. Recognition effects of the acceptor compound on eleven kations comprising Fe<3+>, Ag<+>, Ca<2+>, Cu<2+>, Co<2+>, Ni<2+>, Cd<2+>, Pb<2+>, Zn<2+>, Cr<3+>, Mg<2+>, and the like are researched by a colorimetric method and an ultraviolet-visible absorption spectrometry method. The results show that: the acceptor compound can achieve single selective colorimetric recognition of the Ni<2+> in a DMSO-H2O-HEPES system, the lowest limit of detection achieves 2.2*10<-7> mol*L<-1>, detection sensitivity for the Ni<2+> is high, and the compound has good anti-interference capability. In addition, nickel ion detection paper based on the acceptor compound is also prepared and can conveniently and rapidly detect nickel ions in water.

Description

technical field [0001] The invention belongs to the technical field of cation detection, and relates to a nickel ion acceptor compound——1-(quinoline-8-imine)methylenenaphthol and its synthesis method; the present invention also relates to the detection of the acceptor compound Ni 2+ in the application. Background technique [0002] Nickel is one of the essential trace elements for the human body, but excessive nickel intake can cause nickel poisoning. Modern medicine has proved that excessive nickel in the human body can cause lung cancer, cardiovascular and cerebrovascular diseases, and kidney diseases. Therefore, the detection of nickel ions in the environment is of great significance to medicine, biology and environmental science. So far, various methods for detecting nickel ions have been proposed, many of which require expensive instruments and complicated operations. In the field of ion detection, colorimetry has attracted much attention due to its simple operation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D215/40G01N21/33G01N21/75
CPCC07D215/40G01N21/78
Inventor 林奇刘昕张有明魏太保
Owner NORTHWEST NORMAL UNIVERSITY
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