Fluorescent test strip for H2S detection as well as preparation method and using method thereof

A test strip and fluorescence technology, applied in the field of H2S detection, can solve the problems of high detection cost, long detection time, complicated operation of the detection method, etc., and achieve the effect of good linear relationship

Inactive Publication Date: 2019-03-15
QIQIHAR UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The present invention is aimed at current H 2 The S detection method has the disadvantages of complex operation, long detection time, high detection cost, unintuitive detection effect, and inability to realize instant detection. A method with the advantages of simple detection method, fast detection, low cost, real-time and instant detection, etc. is provided. at H 2 Fluorescence test strip for S detection and preparation and use method thereof

Method used

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  • Fluorescent test strip for H2S detection as well as preparation method and using method thereof
  • Fluorescent test strip for H2S detection as well as preparation method and using method thereof
  • Fluorescent test strip for H2S detection as well as preparation method and using method thereof

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specific Embodiment approach 1

[0034] Specific embodiment one: the present embodiment is used to prepare H 2 The structural formula of the fluorescent probe of the fluorescent test strip for S detection is:

[0035] .

specific Embodiment approach 2

[0036] Specific embodiment two: the method for preparing H described in specific embodiment one 2 The fluorescent probe preparation method of the fluorescent test strip that S detects, carries out as follows:

[0037] 2-(1-phenyl-1 H -phenanthrene [9,10- d ] imidazole-2-) phenol and 2,4-dinitrofluorobenzene are 1 according to the molar ratio of substance under alkaline conditions: (1~3): (1~3) ratio joins in the organic solvent, 25~ Stir at 50°C for 4-6 h. After the reaction is finished, filter to obtain a filter cake and dry it. Recrystallize with a mixed solvent of ethyl acetate and petroleum ether to obtain 2 Fluorescent probes for S detection in fluorescent test strips.

specific Embodiment approach 3

[0038] Specific embodiment three: the difference between this embodiment and specific embodiment two is that it is used for H 2 Any one of the organic solvents acetonitrile, dichloromethane, chloroform, acetone, or tetrahydrofuran described in the synthesis conditions of the fluorescent probe of the fluorescent test strip for S detection.

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Abstract

The invention belongs to the technical field of H2S detection, relates to preparation of a fluorescent probe for the H2S detection, a fluorescent test strip for the H2S detection as well as a preparation method and a using method thereof, and aims to solve the technical problems that by the existing conventional method for detecting hydrogen sulfide in a laboratory, the cost is relatively high andthe hydrogen sulfide cannot be detected in real time, the existing hydrogen sulfide detecting fluorescent probe has no identification specificity and is relatively poor in anti-interference ability,and at present, fluorescent test strips which can be applied to detection of the hydrogen sulfide are fewer and the production process is complicated and cumbersome. The fluorescent probe for detecting hydrogen sulfide provided by the invention has a structural formula as shown in the specification. The fluorescent probe is obtained by performing a reaction on 2-(1-phenyl-1H-phenanthro[9,10-d]imidazol-2-)phenol and 2,4-dinitrofluorobenzene under an alkali condition. The fluorescent test strip is prepared in a system comprising methanol (MeOH) and N-2-hydroxyethylpiperazine-N'-2-ethanesulfonicacid (HEPES) (pH of 7.0) according to a volume ratio of 2:8. When the fluorescent test strip is used for detecting a to-be-detected sample, if the test strip is in yellowish green under irradiation ofan ultraviolet lamp, a to-be-detected solution A contains H2S. The fluorescent test strip for detecting hydrogen sulfide can be applied to the field of hydrogen sulfide detection.

Description

technical field [0001] The invention belongs to H 2 The technical field of S detection involves the use of H 2 Preparation of fluorescent probes for S detection, and for H 2 A fluorescent test strip for S detection and methods for its preparation and use. Background technique [0002] h 2 S is a poisonous gas with the smell of rotten eggs. Excessive hydrogen sulfide can irritate the eyes and respiratory tract, and in severe cases can lead to loss of consciousness, respiratory failure and even death. The content of hydrogen sulfide in the human body is also closely related to diseases such as Alzheimer's disease, Down syndrome, diabetes and liver cirrhosis. [0003] Currently, for the detection of H 2 There are many techniques and methods of S. At present, there are many methods for detecting hydrogen sulfide, such as spectroscopic analysis, methylene blue spectrophotometry, electrochemical method, gas chromatography, etc. Among these detection methods, some methods are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
CPCG01N21/6402
Inventor 赵冰何玉倩温景惠阚伟王丽艳宋波白雨弘旭杨艺璇
Owner QIQIHAR UNIVERSITY
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