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Sensitive high-selectivity colorimetric probe capable of identifying inorganic mercury and organic mercury simultaneously

A compound and straight-chain technology, applied in organic chemistry, material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve the problems of only identifying inorganic mercury synthesis, poor water solubility, and poor selectivity and other problems, to achieve the effect of being conducive to popularization and application, good stability, and simple synthesis

Inactive Publication Date: 2016-12-07
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently reported colorimetric probes still have some problems, including poor water solubility, poor selectivity, only recognition of inorganic mercury, and complex synthesis.

Method used

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  • Sensitive high-selectivity colorimetric probe capable of identifying inorganic mercury and organic mercury simultaneously
  • Sensitive high-selectivity colorimetric probe capable of identifying inorganic mercury and organic mercury simultaneously
  • Sensitive high-selectivity colorimetric probe capable of identifying inorganic mercury and organic mercury simultaneously

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]

[0035] (Scheme 1) Dissolve 200mg (1.35mmol) p-benzaldehyde vinyl ether, 196mg (1.13mmol) benzothiazole-2-acetonitrile and 3 drops of triethylamine in 20mL ethanol, then stir at 25°C for 10h, then The crude product was obtained by rotary evaporation, and finally separated by column chromatography using petroleum ether:dichloromethane=5:1 (V / V) system to obtain 316 mg of pure product with a yield of 92%.

[0036] (Scheme 2) Dissolve 217mg (1.47mmol) p-benzaldehyde vinyl ether, 196mg (1.13mmol) benzothiazole-2-acetonitrile and 3 drops of triethylamine in 20mL ethanol, then stir at 25°C for 10h, then The crude product was obtained by rotary evaporation, and finally separated by column chromatography using petroleum ether:dichloromethane=5:1 (V / V) system to obtain 314 mg of pure product with a yield of 92%.

[0037] (Scheme 3) Dissolve 167mg (1.13mmol) p-benzaldehyde vinyl ether, 196mg (1.13mmol) benzothiazole-2-acetonitrile and 3 drops of triethylamine in 20mL ethanol,...

Embodiment 2

[0041] Effects of different analytes (25 μM) on the absorption spectrum of the probe (10 μM) and quantitative analysis of Hg by different analytes (25 μM) on the absorption spectrum of the probe (10 μM) 2+ (25μM).

[0042] Among them, the black column represents the change in the absorbance of various metal ions added at 25 μM to the pure water system with a probe concentration of 10 μM, and the red column represents the addition of 25 μM of Cd to the probe system with 25 μM of mercury ions. 2+ , Fe 3+ , Pb 2+ 、Cu 2+ 、Co 2+ 、Ni 2+ , Fe 2+ , Zn 2+ , Sn 2+ 、Al 3+ , Ca 2+ 、Na + 、K + , Mg 2+ changes in absorbance. The test temperature was carried out at room temperature of 25°C, and sodium hydroxide was added to the test system to adjust the pH of the solution system to 8. The result is as figure 1 shown.

[0043] from figure 1 It can be seen that the probe has a high selectivity to mercury ions and can specifically react with mercury ions. Before and after the re...

Embodiment 3

[0045] Different concentrations of Hg 2+ (0-15μM) on the probe (10μM) absorption spectrum. The above determination is carried out in the aqueous solution system after adding sodium hydroxide to adjust the pH to 8, the probe used is the probe prepared in Example 1, the results can be found in figure 2 .

[0046] from figure 2 It can be seen that with the Hg in the probe solution 2+ With the increase of the concentration, the absorbance value gradually increases, and it is in the range of 0-15μM Hg 2+ Concentration range, Hg 2+ The concentration and absorbance show a linear relationship. Therefore, the probe of the present invention can more accurately determine the content of mercury ions in the sample to be tested.

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Abstract

The invention relates to a sensitive high-selectivity colorimetric probe capable of identifying inorganic mercury and organic mercury simultaneously. Particularly, the probe is a benzothiazole compound taking vinyl ether as a recognition receptor, and can be used for detection of mercury ions. The probe can realize at least one of the technical effects of high-selectivity identification of inorganic mercury ions / organic mercury ions, instant detection of mercury ions and naked-eye detection; the probe is stable in performance, can be preserved and used for a long time, is beneficial to detection of mercury ions in practical samples, and has high antijamming capability.

Description

technical field [0001] The invention relates to a benzothiazole compound with vinyl ether as a recognition receptor as a colorimetric probe for simultaneous analysis of inorganic mercury and organic mercury, which can be used in sensitive and high-selective recognition under specific conditions, or it can be used to determine samples Concentrations of inorganic and / or organic mercury in water. Background technique [0002] Mercury is an element with strong toxicity, easy to accumulate, and difficult to degrade. Even at very low concentrations, mercury can cause permanent damage to the human nervous system and endocrine system. In particular, it should be pointed out that inorganic mercury may be transformed into more toxic organic mercury under the action of aquatic biological systems, passed through the food chain and finally enriched in the human body, threatening human life and health at all times. Therefore, the change and development of mercury detection methods is urg...

Claims

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Application Information

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IPC IPC(8): C07D277/64G01N21/78
CPCC07D277/64G01N21/78
Inventor 王雅伟刘靳柳彩云段庆霞王作凯朱宝存
Owner UNIV OF JINAN
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