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Method for detecting components of mixed gas in wastewater pool

A mixed gas and component detection technology, applied in chemical instruments and methods, analytical materials, measuring devices, etc., can solve the problem of inability to accurately measure the content of harmful gases in wastewater, achieve good water solubility, wide detection range, and promote penetration.

Pending Publication Date: 2021-05-25
江苏安泰安全技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a method for detecting the mixed gas components in the waste water pool, so as to solve the problem that the prior art cannot accurately measure the harmful gas content in the waste water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1. Mix 0.123 g 6-methoxy-2-methylquinoline and 0.543 g iodomethane in anhydrous toluene, heat the mixture at 90°C for 8 h, then cool to room temperature, filter, wash, vacuum Dry to obtain light yellow solid powder.

[0022] Step 2. Dissolve 0.13 g (7)-diethylamino-2-oxo-2H-benzopyran-3-carbaldehyde and 0.1 g of the product obtained in step 1 in absolute ethanol, and stir the mixture at 85°C to reflux After 12 hours, it was cooled to room temperature, and the filtrate was collected by filtration and spin-dried under reduced pressure. Using dichloromethane and methanol with a volume ratio of 20:1 as the eluent, it was separated by silica gel column chromatography and purified to obtain an orange solid powder SO 2 probe.

[0023] Step 3. Add 0.1 g of 3,7-bis(dimethylamine)-5,5-dimethyldibenzo and 8 mL of dry tetrahydrofuran into a dry flask. The solution was cooled to -78°C, 3 mL of tert-butyllithium was added dropwise, stirred for 30 min, heated to room temperatur...

Embodiment 2

[0027] Step 1. Mix 0.2 g 6-methoxy-2-methylquinoline and 0.1 g iodomethane in anhydrous toluene, heat the mixture at 90°C for 6 h, then cool to room temperature, filter, wash, vacuum Dry to obtain light yellow solid powder.

[0028] Step 2, 0.4 g (7)-diethylamino-2-oxo-2H-benzopyran-3-carbaldehyde and 0.5 g of the product obtained in step 1 were dissolved in absolute ethanol, and the mixture was stirred and refluxed at 85 °C After 12 hours, it was cooled to room temperature, and the filtrate was collected by filtration and spin-dried under reduced pressure. Using dichloromethane and methanol with a volume ratio of 20:1 as the eluent, it was separated by silica gel column chromatography and purified to obtain an orange solid powder SO 2 probe.

[0029] Step 3. Add 0.5 g of 3,7-bis(dimethylamine)-5,5-dimethyldibenzo and 10 mL of dry tetrahydrofuran into a dry flask. The solution was cooled to -78°C, 5 mL of tert-butyllithium was added dropwise, stirred for 30 min, heated to ro...

Embodiment 3

[0033] Step 1. Mix 0.6 g 6-methoxy-2-methylquinoline and 0.2 g iodomethane in anhydrous toluene, heat the mixture at 90°C for 10 h, then cool to room temperature, filter, wash, vacuum Dry to obtain light yellow solid powder.

[0034] Step 2, 0.34 g (7)-diethylamino-2-oxo-2H-benzopyran-3-carbaldehyde and 0.3 g of the product obtained in step 1 were dissolved in absolute ethanol, and the mixture was stirred and refluxed at 85 °C After 12 hours, it was cooled to room temperature, and the filtrate was collected by filtration and spin-dried under reduced pressure. Using dichloromethane and methanol with a volume ratio of 20:1 as the eluent, it was separated by silica gel column chromatography and purified to obtain an orange solid powder SO 2 probe.

[0035] Step 3. Add 0.8 g of 3,7-bis(dimethylamine)-5,5-dimethyldibenzo and 10 mL of dry tetrahydrofuran into a dry flask. The solution was cooled to -78°C, 4 mL of tert-butyllithium was added dropwise, stirred for 30 min, heated to ...

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Abstract

The invention discloses a method for detecting components of mixed gas in a wastewater pool, which comprises the following steps: firstly, mixing 6-methoxy-2-methylquinoline and iodomethane, and performing heating for reaction to obtain faint yellow solid powder; dissolving 7-diethylamino-2-oxo-2H-benzopyran-3-formaldehyde and the product of the faint yellow solid powder prepared in the step 1, stirring and refluxing the mixture, performing cooling to the room temperature, performing filtering, collecting filtrate, performing reduced-pressure spin-drying, and performing silica gel column chromatography separation to obtain an orange solid powder SO2 probe; adding 3, 7-didimethylamino-5, 5-dimethyl diphenyl and tetrahydrofuran, performing cooling, dropwise adding tert-butyl lithium, performing stirring, and performing staying overnight; adding an HCl solution into the mixed solution, performing treating, dissolving residues in trifluoroacetic acid, and performing stirring overnight; continuously alkalifying, extracting, drying and evaporating the obtained solution; and purifying the residue by column chromatography to obtain the dark blue solid NO probe. By adopting a fluorescence analysis technology, the content of the mixed gas in the wastewater pool is easily detected, the response time is short, the sensitivity is high, and the detection range is wide.

Description

technical field [0001] The invention relates to a method for detecting mixed gas components in a waste water pool, belonging to the technical field of gas detection. Background technique [0002] In recent years, with the rapid development of the dye industry, more and more synthetic dyes have been applied to industries such as textiles, food, cosmetics and coatings. Most of these synthetic dyes are highly toxic and have three effects of teratogenicity, carcinogenicity and mutagenicity on humans and other organisms. Once these waste water is discharged into the environment, it will seriously deteriorate the quality of the water body, not only affecting the growth of various organisms and plants in the water body, causing the deterioration of the ecosystem, but also seriously threatening the health of human drinking water. SO in industrial wastewater 2 and NO x (nitrogen oxides) emissions are also increasing. SO 2 Water-soluble, SO emitted to the atmosphere 2 Forms corr...

Claims

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Application Information

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IPC IPC(8): G01N21/64C07D405/12C07D311/82C09K11/06
CPCG01N21/643C07D405/12C07D311/82C09K11/06C09K2211/1029C09K2211/1088
Inventor 徐亚红唐东东
Owner 江苏安泰安全技术有限公司
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