Method for detecting alcohol concentration with gradient wetted surface

Active Publication Date: 2016-11-02
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its operation is more difficult, and the cleaning requirements are very high, and it is necessary to look up the table corresponding to the data table to obtain the specific alcohol concentration, and the result is greatly affected by the operator and has uncertainty.

Method used

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  • Method for detecting alcohol concentration with gradient wetted surface
  • Method for detecting alcohol concentration with gradient wetted surface
  • Method for detecting alcohol concentration with gradient wetted surface

Examples

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Embodiment 1

[0023] Embodiment 1 The method for detecting alcohol concentration using gradient wetting surface according to the present invention includes the following steps:

[0024] 1) Preparation of super-hydrophobic titanium dioxide coating solution: mix 0.1g of titanium dioxide powder with 10ml of absolute ethanol and then sonicate it at 100Hz for 30min to form a titanium dioxide suspension, and then add 0.2ml of octadecyltrimethoxysilane to the above formulation In the resulting titanium dioxide suspension, continue ultrasonic mixing at 100 Hz, and then react for 12 hours at room temperature to obtain a superhydrophobic titanium dioxide coating solution;

[0025] 2) Preparation of the substrate with super-hydrophobic layer: spin-coated five times at a speed of 1000 rad / min, and spin-coated the suspension onto the cleaned glass substrate in a manner of five drops each time, and finally treated in an oven at 120°C for 1 hour to obtain Super-hydrophobic surface, the droplets appear spherica...

Embodiment 2

[0033] Example 2 Use a dropper to suck a 50% alcohol solution, drop 10uL on the gradient wetting surface ( figure 2 ), when the alcohol solution stops flowing, measure its flowing length with a steel ruler to be 8.9mm. Repeating the above steps, the measured concentration can be obtained as 33% ( image 3 ), 25% ( Figure 4 ) And 20%( Figure 5 The flow lengths of the alcohol solution of) are 6mm, 4.7mm, and 4mm respectively. According to this method, a standard library corresponding to the flow length and the alcohol concentration can be established to detect the unknown concentration of alcohol.

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Abstract

The invention relates to a method for detecting alcohol concentration with a gradient wetted surface. The method utilizes the property that alcohol with different concentrations has different flow lengths on a gradient wetted surface to establish a standard library with alcohol concentration and its flow length on the gradient wetted surface in one-to-one correspondence. When alcohol concentration needs to be detected, a dropper is employed to suck a to-be-detected alcohol solution so as to measure the flow length of the alcohol solution on the gradient wetted surface, and the length is compared with the flow length-alcohol concentration standard library so as to obtain the concentration of the to-be-detected alcohol. The method is simple and practicable, has good repeatability, and can accurately detect the concentration of the alcohol solution.

Description

Technical field [0001] The invention relates to a method for detecting alcohol concentration by using a gradient wetting surface. Background technique [0002] Essence is flammable and explosive, and special attention must be paid to prevent its leakage in various industrial activities. From factories to households, the detection and monitoring of alcohol leaks are very important and essential for personal and property safety. With the gradual improvement of science and technology, people’s safety awareness has increased, and the requirements for environmental safety and life comfort have increased. The rapid and safe detection of alcohol concentration is one of the important technologies in chemical production. Therefore, alcohol concentration detection has a very wide range of Application value and market demand. [0003] Existing alcohol concentration detection instruments mostly focus on the gaseous state. The few methods that can detect the alcohol concentration in the liqui...

Claims

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Application Information

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IPC IPC(8): G01N11/02
CPCG01N11/02
Inventor吴化平刘爱萍鲁聪达李吉泉丁浩柴国钟朱凯曹彬彬吴兵兵
OwnerZHEJIANG UNIV OF TECH