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Application of transition metal organic zinc complex in trace nitroaromatic pollutant detection

A technology for organic pollutants and nitroaromatics, applied in the field of application of transition metal organozinc complexes in the detection of trace nitroaromatic pollutants

Inactive Publication Date: 2015-07-29
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, reports on the application of metal-organic complexes in the detection of nitroaromatic compounds have been increasing year by year in the literature, but compared with other research, this research is still in the initial stage of exploration, and there is still a lot of room for development

Method used

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  • Application of transition metal organic zinc complex in trace nitroaromatic pollutant detection
  • Application of transition metal organic zinc complex in trace nitroaromatic pollutant detection
  • Application of transition metal organic zinc complex in trace nitroaromatic pollutant detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 (p-nitrotoluene sensing), the process is as follows:

[0024] First measure the fluorescence intensity F of the sensing material in the absence of p-nitrotoluene 0 , and then add gradient substance amounts of diphenylamine (0 μmol, 0.005 μmol, 0.01 μmol, 0.02 μmol, 0.03 μmol, 0.04 μmol, 0.06 μmol, 0.08 μmol, 0.1 μmol and 0.2 μmol), measure the amount of different substances p-nitrotoluene exists When the fluorescence intensity F of the sensing material is measured, the curve of the fluorescence intensity F changing with the amount of p-nitrotoluene substance is drawn, see figure 1 . The test results show that the fluorescence intensity gradually decreases with the increase of p-nitrotoluene; when the added p-nitrotoluene reaches 0.20μmol, the quenching efficiency reaches 71.46%.

Embodiment 2

[0025] Embodiment 2 (p-nitroaniline sensing), the process is as follows:

[0026] First measure the fluorescence intensity F of the sensing material in the absence of p-nitroaniline 0 , and then add p-nitroaniline (0 μmol, 0.005 μmol, 0.01 μmol, 0.02 μmol, 0.03 μmol, 0.04 μmol, 0.06 μmol, 0.08 μmol, 0.1 μmol, 0.15 μmol, 0.2 μmol) of the gradient substance amount, and measure the amount of different substances Fluorescence intensity F of the sensing material when p-nitroaniline exists, draw the curve of fluorescence intensity F changing with the amount of p-nitroaniline substance, see figure 2 , the test results show that the fluorescence intensity gradually decreases with the increasing amount of p-nitroaniline substance; when the amount of p-nitroaniline substance added reaches 0.20μmol, the quenching degree reaches 98.76%, which shows that the sensing The sensing effect of the material on p-nitroaniline is very obvious.

Embodiment 3

[0027] Embodiment 3 (nitrobenzene sensing), the process is as follows:

[0028] First measure the fluorescence intensity F of the sensing material in the absence of nitrobenzene 0 , and then add gradient substance amounts of nitrobenzene (0 μmol, 0.005 μmol, 0.01 μmol, 0.02 μmol, 0.03 μmol, 0.04 μmol, 0.06 μmol, 0.08 μmol, 0.1 μmol, 0.2 μmol), and measure the amount of nitrobenzene present in different substances When the fluorescence intensity F of the sensing material is measured, the curve of the fluorescence intensity F changing with the amount of nitrobenzene substance is drawn, see image 3 , the test results show that the fluorescence intensity decreases gradually with the increasing amount of nitrobenzene substances; when the amount of nitrobenzene substances added reaches 0.20μmol, the quenching degree reaches 61.13%.

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Abstract

The invention provides an application of a transition metal organic zinc complex in trace nitroaromatic pollutant detection. Experimental results show that the complex has an obvious fluorescence quenching effect on paranitrotoluene, paranitroaniline, nitrobenzene and meta-nitrotoluene and has the advantages of quickness, simplicity, convenience, sensitivity and the like in the trace nitroaromatic pollutant detection.

Description

[0001] Technical field: the present invention relates to the application of a metal-organic complex in the detection of trace nitroaromatic pollutants. Background technique [0002] Nitroaromatic compounds can be used in the manufacture of explosives such as explosives. They are also typical organic pollutants and have a certain degree of carcinogenicity, posing a serious threat to society, the ecological environment and people's lives. Traditional detection methods have disadvantages such as complex processing, slow detection speed, and inability to meet rapid on-site detection. Therefore, exploring accurate and rapid methods for the detection of nitroaromatic compounds in air, soil and solution has received extensive attention. Fluorescence sensing technology has been widely used because of its high sensitivity, many parameters that can be collected, and fast response time. Among them, fluorescent conjugated polymers are mostly used as sensing materials. Its mechanism is ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 王凤勤周琛阳王成苗田振华左卓彦赵永男
Owner TIANJIN POLYTECHNIC UNIV
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