Nano-sensitive material for detecting ethylene oxide

A sensitive material, ethylene oxide technology, applied in the direction of chemical reaction of materials for analysis, chemiluminescence/bioluminescence, etc., can solve the problem of time-consuming and difficult to popularize

Inactive Publication Date: 2012-12-05
BIOCHEM ENG COLLEGE OF BEIJING UNION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The methods for the determination of ethylene oxide in the literature mainly include gas chromatography, liquid chromatography, mass spectrometry, liquid-mass spectrometry, electrochemical methods, and spectrophotometric methods. Since these methods often require large-scale analytical instruments to complete the determination, Therefore, it takes a long time and is not easy to promote

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] (1) Co-dissolve aluminum nitrate, ammonium metavanadate and barium nitrate in an aqueous solution of dilute hydrochloric acid, add an appropriate amount of citric acid under high-speed stirring to keep the solution clear for more than 12 hours, and adjust the pH of the solution to 3.7 with dilute ammonia , continue for 8 hours, stand for aging, rotate the solution at 89°C to obtain a gel, dry the gel for 1 hour with infrared light, grind it thoroughly, and raise the temperature in a high-temperature box-type resistance furnace at a speed of no more than 4°C per minute to 512°C and keep this temperature for 3 hours to obtain Al 2 o 3 , V 2 o 5 and BaO nanopowder;

[0012] (2) Dissolve an appropriate amount of silver nitrate and glucose in water, add the above-mentioned nano-powder dispersed by ultrasonic wave into it under constant stirring, continue to stir and mix evenly, directly put it in a drying oven for drying, and heat reduction at 198°C 5 minutes to get Al d...

Embodiment 2

[0016] (1) Co-dissolve aluminum sulfate, ammonium metavanadate and barium nitrate in an aqueous solution of dilute hydrochloric acid, add an appropriate amount of citric acid under high-speed stirring to keep the solution in a clear state for more than 12 hours, and adjust the pH value of the solution to 3.8 with dilute ammonia water , continue to stir for 7 hours, let it stand for aging, rotate the solution at 87°C to obtain a gel, dry the gel by infrared for 1 hour, grind it thoroughly, and place it in a high-temperature box-type resistance furnace at a speed of no more than 4°C per minute Raise the temperature to 515°C and keep this temperature for 3 hours to obtain Al 2 o 3 , V 2 o 5 and BaO nanopowder;

[0017] (2) Dissolve an appropriate amount of silver nitrate and glucose in water, add the above-mentioned nano-powder that has been dispersed by ultrasonic waves under constant stirring, continue to stir and mix evenly, directly place it in a drying oven to dry, and he...

Embodiment 3

[0021] (1) Co-dissolve aluminum chloride, ammonium metavanadate and barium chloride in an aqueous solution of dilute hydrochloric acid, add an appropriate amount of citric acid under high-speed stirring to keep the solution in a clear state for more than 12 hours, and adjust the pH value of the solution with dilute ammonia water If the temperature is 4.0, continue to stir for 6 hours, let it stand for aging, rotate the solution at 85°C to obtain a gel, dry the gel by infrared for 1 hour, grind it thoroughly, and place it in a high-temperature box-type resistance furnace at a rate of no more than 4°C per minute. The speed is raised to 530°C, and the temperature is maintained for 3 hours to obtain Al 2 o 3 , V 2 o 5 and BaO nanopowder;

[0022] (2) Dissolve an appropriate amount of silver nitrate and glucose in water, add the above-mentioned nano-powder dispersed by ultrasonic wave into it under constant stirring, continue to stir and mix evenly, directly put it in a drying o...

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Abstract

The invention relates to a nano-sensitive material for detecting ethylene oxide. The nano-sensitive material is characterized by consisting of Ag atom-doped Al2O3, V2O5 and BaO nano-powder, wherein the Ag atom-doped Al2O3, V2O5 and BaO nano-powder comprises the following components: 6 to 9 percent of Ag, 25 to 35 percent of Al2O3, 35 to 45 percent of V2O5 and 10 to 25 percent of BaO; and the particle size range is 35 to 50nm. An ethylene oxide sensor which is prepared from the sensitive material has the advantages of wide linear range, high selectivity and sensitivity and the like, can monitor a trace amount of ethylene oxide on line, and is not affected by coexisting substances.

Description

technical field [0001] The invention relates to a nano-sensitive material for detecting ethylene oxide, especially Al doped by Ag atoms 2 o 3 , V 2 o 5 The sensitive material composed of BaO nanometer powder belongs to the field of sensing technology. Background technique [0002] Ethylene oxide is widely used in washing, pharmaceutical, printing and dyeing industries, and is an important organic chemical raw material. Ethylene oxide has a very low boiling point and can decompose violently when exposed to high heat. Its vapor can form a wide range of explosive mixtures with air. If it contacts alkali metals, hydroxides or highly active catalysts such as anhydrous chlorides of iron, tin and aluminum and oxides of iron and aluminum are highly exothermic and may cause an explosion. Ethylene oxide is a central nervous system depressant, stimulant and protoplasm poison, which can form formaldehyde, ethylene glycol and oxalic acid in the body, anesthetize the central nervous ...

Claims

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Application Information

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IPC IPC(8): G01N21/76
Inventor 周考文张少瞳金浩然赵金
Owner BIOCHEM ENG COLLEGE OF BEIJING UNION UNIV
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