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Novel nano strontium carbonate base acetone sensitive material

A strontium carbonate-based, sensitive material technology, applied in the direction of analysis, chemiluminescence/bioluminescence, etc. by chemical reaction of the material, can solve the problems of poor acetone selectivity and poor anti-interference performance, and achieve good selectivity, Fast response and high sensitivity effects

Inactive Publication Date: 2009-06-03
GUANGZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the inventors have found through experiments that when gaseous acetone passes through strontium carbonate nanoparticles, strong catalytic luminescence signals can be produced, but at the same time vapors such as ethanol, acetaldehyde and formaldehyde can also produce strong luminescence signals. The prepared sensor will be interfered by vapors such as ethanol, acetaldehyde and formaldehyde when detecting acetone, the selectivity to acetone is not good, and the anti-interference performance is poor

Method used

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  • Novel nano strontium carbonate base acetone sensitive material
  • Novel nano strontium carbonate base acetone sensitive material
  • Novel nano strontium carbonate base acetone sensitive material

Examples

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Effect test

example 1

[0028] Weigh 1 part of strontium carbonate nanopowder and 0.5 part of dysprosium oxide powder according to the weight ratio, put them in a container, add distilled water and stir them into a thin paste, mix them well and put them in a drying oven at 110°C for 1 hour to dry, then place Treat it in a muffle furnace at 500°C for 1 hour, take it out and cool it, and grind it thoroughly. During heat treatment in the muffle furnace, do not close the door of the muffle furnace, and leave a gap in the door to ensure that there is sufficient oxygen in the furnace to remove residual organic matter in the material.

example 2

[0030] Weigh 1 part of strontium carbonate nanopowder and 0.02 part of dysprosium oxide powder according to the weight ratio, put them in a container, add distilled water and stir them into a thin paste, mix them well and put them in a drying oven at 110 ° C for 1 hour, then dry them in a Heat treatment in a muffle furnace at 450°C for 1 hour in an aerobic atmosphere, take it out and cool it down and grind it thoroughly. Other operating methods are the same as Example 1.

example 3

[0032] Weigh 1 part of strontium carbonate nanopowder and 0.05 part of dysprosium oxide powder according to the weight ratio, put them in a container, add distilled water and stir into a thin paste, mix well and put them in a drying oven at 110°C for 1 hour, then place Treat it in a muffle furnace at 550°C for 1 hour, take it out and cool it, and grind it thoroughly. Other operating methods are the same as Example 1.

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Abstract

The acetone sensitive nanometer strontium carbonate base material is prepared through mixing nanometer strontium carbonate powder in 1 weight portion and dysprosia in 0.02-1 weight portion, adding distilled water and stirring to form paste, drying at 110 deg.C for 1 hr, heat treatment in oxygen atmosphere at 450-550 deg.C for 1 hr, cooling and final grinding. The acetone sensitive nanometer strontium carbonate base material may be used in making acetone vapor detecting sensor with very high sensitivity and selectivity, no interference from co-existed gas and detection limit as low as 0.30 ppm.

Description

technical field [0001] The invention relates to the technical field of gas testing by means of measuring the chemical or physical properties of materials, in particular to a nanometer strontium carbonate-based acetone sensitive material. Background technique [0002] Gaseous acetone belongs to the fourth grade of occupational exposure to poison hazard classification (GB 5044-85) slightly harmful pollutants, and has damage to the nervous system. Acetone vapor is produced primarily in manufacturing plants and painting operations, but also inside machinery fueled by petroleum products and may also be present during the burning of wood, plastics; acetone has also been detected in many plants and foods ; In terms of biomedicine, it is known that the acetone content in the exhaled breath of diabetic patients is higher than that of normal people, and its determination can be used as the basis for diagnosing diseases. Therefore, it is of great significance to be able to detect low-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76
Inventor 曹小安李锦文李晓蔚江涌
Owner GUANGZHOU UNIVERSITY
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