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A fluorescent probe compound for hypochlorous acid detection, its preparation method and application

A fluorescent probe and compound technology, applied in the field of analysis and detection, can solve problems such as being susceptible to interference, difficult to guarantee accuracy, and cumbersome detection process

Active Publication Date: 2022-03-01
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The judgment of the titration end point of iodometric titration often involves the subjective factors of analysts, therefore, the accuracy of detection by iodometric titration is difficult to guarantee
In the process of spectrophotometric detection of hypochlorous acid, it is necessary to use other chemical reagents to mask the interfering substances developed by the chromogenic reagent, the detection process is cumbersome and susceptible to interference

Method used

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  • A fluorescent probe compound for hypochlorous acid detection, its preparation method and application
  • A fluorescent probe compound for hypochlorous acid detection, its preparation method and application
  • A fluorescent probe compound for hypochlorous acid detection, its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of fluorescent probe compounds for hypochlorous acid detection:

[0028] In a 250mL three-necked flask equipped with a thermometer, a stirrer and a condenser, add 1.52g (10mmol) p-hydroxybenzoic hydrazide, 1.32g (11mmol) cinnamaldehyde, and 40mL absolute ethanol in sequence, and heat to reflux temperature for 2.5h The reactant is concentrated to 20mL, then cooled to room temperature, a yellow powder is separated out, and then recrystallized with 20ml of absolute ethanol to obtain a yellow powder 4-hydroxyl-benzyl-(3-phenyl-allyl)-acyl Hydrazine, the yield is 61.8%. FT-IR(KBr)ν(cm -1 ):3421,3263,3060,3033,1620,1604,1539,1506,1356,1271,1211,1173,976,848,749; 1 H NMR (DMSO-d 6 ,600MHz):6.85-6.87(d,2H),7.00-7.02(d,2H),7.30-7.33(t,1H),7.37-7.40(t,2H),7.60-7.62(d,2H),7.79 -7.80(d,2H),8.21-8.23(d,1H),10.12(s,1H),11.54(s,1H); 13 C NMR (DMSO-d 6 , 150MHz), δ(ppm): 115.47, 124.35, 126.35, 127.50, 129.21, 129.29, 130.15, 136.49, 138.87, 149.29, 161.14, 163.11. T...

Embodiment 2

[0032] The fluorescent probe compound is used for the detection of hypochlorous acid in water:

[0033] Take 10mL of pure water and put it into a volumetric flask, and use the linear relationship obtained above for quantitative detection, and no hypochlorous acid was detected.

[0034] Dilute the 8% sodium hypochlorite solution by 10 5 Times, take 10mL for hypochlorous acid detection, parallel 3 times the results are shown in the table below.

[0035]

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Abstract

The invention discloses a fluorescent probe compound for hypochlorous acid detection, its preparation method and application. The structural formula of the compound is: the fluorescent probe compound of the invention can form a complex with hypochlorite ions in a solution compound, and the fluorescence intensity of the system is enhanced, which can be used for the detection of hypochlorite and its content, and has good selectivity and is not interfered by other ions; the structure is simple, easy to prepare, the reaction process is easy to control, and the cost is low. Popularize.

Description

technical field [0001] The invention relates to a fluorescent probe for detecting hypochlorous acid, a preparation method and application thereof, and belongs to the technical field of analysis and detection. Background technique [0002] Hypochlorous acid and its conjugate base HClO / ClO-, as strong oxidants, are used in various organic synthesis, and are also used as disinfectants and bleaching agents. However, when hypochlorous acid is used for disinfection of tap water and drinking water, some organic chlorine by-products (OBPs) will be produced in the water, which will cause certain harm to the human body and cause a series of diseases such as arteriosclerosis, arthritis and even cancer. Therefore, the development of highly sensitive and highly selective hypochlorous acid detection methods has important application value in the fields of environmental monitoring and so on. [0003] At present, the methods for detecting hypochlorous acid mainly include iodometric titrati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C243/38C07C241/04C09K11/06G01N21/64
CPCC07C243/38C09K11/06G01N21/643C09K2211/1007
Inventor 吉贵祥杨金来顾杰
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA