Heavy metal ion detection device and preparation method thereof

A technology of heavy metal ions and detection devices, applied in ion implantation plating, metal material coating process, coating and other directions, can solve the problems of inability to quantitatively detect the detection process, low detection sensitivity, long detection time, etc., and reach the detection concentration limit Low, high detection sensitivity, rapid response effect

Inactive Publication Date: 2010-10-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a heavy metal ion detection device and its preparation method to solve the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] (1) At room temperature, 2g of polystyrene (polymerization degree of 1600) solid was dissolved in 18g of N,N-dimethylformamide with a mass ratio of 3 / 1 with a magnetic stirrer at a speed of 50rpm / min. In the mixed solvent of tetrahydrofuran, a polystyrene solution with a mass fraction of 10% is obtained;

[0023] (2) Under the conditions of room temperature and humidity of 40%, input a 10% mass fraction of polystyrene solution into the spinneret at a flow rate of 4mL / h, and connect the spinneret to a 20kV power supply for electrostatic spinning Prepare fiber

[0024] (3) Deposit the spun fiber on the electrode of the quartz crystal microbalance, the distance between the receiving electrode and the spinneret is 15cm;

[0025] (4) The fiber deposited on the quartz crystal microbalance electrode was sprayed with gold film with a vacuum metal sputtering apparatus, and the spraying time was 1 min;

[0026] (5) Put the electrode of the quartz crystal microbalance s...

Example Embodiment

[0028] Example 2

[0029] (1) At room temperature, 3g polyaniline (polymerization degree 300) was dissolved in 17g N,N-dimethylformamide with a magnetic stirrer at 250 rpm / min to obtain a 15% polyaniline mass fraction. Aniline solution

[0030] (2) Under the condition of room temperature and humidity of 50%, input the polyaniline solution with a mass fraction of 15% into the spinneret at a flow rate of 2mL / h, and connect the spinneret to an 18kV power supply for electrospinning preparation fiber;

[0031] (3) Deposit the spun fiber on the electrode of the quartz crystal microbalance, the distance between the receiving electrode and the spinneret is 10cm;

[0032] (4) Use a vacuum metal sputtering apparatus to spray silver film on the fiber deposited on the quartz crystal microbalance electrode, and the spraying time is 2min;

[0033] (5) Put the electrode of the quartz crystal microbalance sprayed with fiber and silver film into N-acryloylmorpholine and soak for 2h, and take it out to...

Example Embodiment

[0035] Example 3

[0036] (1) At room temperature, 6g polyethyleneimine (polymerization degree is 500) is dissolved in 14g methylene chloride with a magnetic stirrer at 500rpm / min to obtain a polyethyleneimine with a mass fraction of 30% Base imine solution;

[0037] (2) Under the condition of room temperature and humidity of 60%, input the polyethyleneimine solution with a mass fraction of 30% into the spinneret at a flow rate of 6mL / h, and at the same time connect the spinneret to a 60kV power supply. Electrospinning to prepare fibers;

[0038] (3) Deposit the spun fiber on the electrode of the quartz crystal microbalance, the distance between the receiving electrode and the spinneret is 30cm;

[0039] (4) Use a vacuum metal sputtering instrument to spray copper film on the fiber deposited on the quartz crystal microbalance electrode, and the spray time is 10 minutes;

[0040] (5) Put the electrode of the quartz crystal microbalance sprayed with fiber and gold film into 4-(2-mercapt...

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PUM

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Abstract

The invention provides a heavy metal detection device and a preparation method thereof. The device comprises a quartz crystal microbalance, and is characterized in that: polymer fibers are deposited on the electrode of the quartz crystal microbalance; a metal film is sprayed on the polymer fibers; and a sensing material is covered on the metal film. The preparation method is characterized by comprising the following steps: dissolving a spinning polymer raw material in a solvent to obtain an electrospinning material; performing electrostatic spinning by using the electrospinning material; depositing the fibers onto the electrode of the quartz crystal microbalance; spraying the metal film on the fibers; and placing the electrode of the quartz crystal microbalance in a container containing solution of the sensing material for soaking, and taking the electrode out to obtain the heavy metal ion detection device. The device has the advantages of high sensitivity and accurate and quantitative detection.

Description

technical field [0001] The invention relates to a heavy metal ion detection device and a preparation method thereof, belonging to the field of metal ion detection. Background technique [0002] Traditional heavy metal ion detection methods such as atomic absorption spectrometry, inductively coupled plasma emission spectrometry, etc. require pretreatment of samples, and the detection process is cumbersome. It is difficult to adapt to actual needs. Although the heavy metal ion immunoassay method that appeared in recent years overcomes the shortcomings of the above-mentioned traditional detection methods to a certain extent, the immunoassay method can only detect qualitatively, not quantitatively. Some foreign experts and scholars have used quartz crystal microbalance as a research platform to cover sensitive materials on electrodes in the form of solid films to prepare sensors for detecting heavy metal ions, but they cannot overcome the shortcoming of low sensitivity. Heavy ...

Claims

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Application Information

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IPC IPC(8): G01N5/02C23C14/34C23C14/20
Inventor 丁彬孙敏俞建勇孙刚
Owner DONGHUA UNIV
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