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A nanofiber film blood lead color sensor and detection method thereof

A color sensor, nanofiber membrane technology, applied in color measurement device, color/spectral characteristic measurement and other directions, can solve the problems of cumbersome pretreatment process, inability to detect lead content, unstable solution properties, etc. The effect of simple production equipment and intuitive results with few interference factors

Inactive Publication Date: 2014-10-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chromogenic substance used in this method is sodium roseate, and the solution is unstable, so it must be freshly prepared before use.
In addition, the substrate of this kind of test paper is made of plastic material, which will cause secondary pollution to the environment after the test; the German MN company also invented the lead ion detection test paper, but the pretreatment process of this kind of test paper is cumbersome and repeated experiments Difficult, large error disadvantages
The above-mentioned test papers are only suitable for the detection of lead in food, water quality, etc., and cannot be used for the detection of lead content in human blood. A blood lead test device that is easy to analyze, low in price, and can guarantee test results

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] one, Fabrication of Nanofiber Film Blood Lead Color Sensor

[0042] The first step: under the condition of room temperature 25°C, stir and dissolve 0.8g of nitrocellulose in 9.2g of polytetrafluoroethylene and N,N-dimethylformamide in a stirring tank at a speed of 50rpm in a weight ratio of 3:2 In the prepared mixed solvent, stir for 6 hours to completely dissolve the nitrocellulose;

[0043] Step 2: Under the conditions of room temperature 25°C and humidity 25%, the nitrocellulose solution prepared in the first step is input to the spinneret at a flow rate of 0.2mL / h, and the spinneret is connected to a 10kV power supply at the same time. Prepare nitrocellulose nanofibers by electrospinning; deposit the spun fibers onto ITO conductive glass, the distance between the ITO conductive glass and the spinneret is 6cm; after the spinning is completed, put the ITO conductive glass into a vacuum oven Dry at 60°C for 1 hour to obtain a nitrocellulose membrane;

[0044] The th...

Embodiment 2

[0062] 1. Preparation of nanofiber film blood lead color sensor

[0063] Step 1: Dissolve 0.8g of nitrocellulose in 9.2g of tetraethylene glycol and N,N-dimethylformamide at a weight ratio of 3:2 in a stirred tank at room temperature of 25°C. In the resulting mixed solvent, stir for 6 hours to completely dissolve the nitrocellulose;

[0064] Step 2: Under the conditions of room temperature 25°C and humidity 20%, input the nitrocellulose solution prepared in the first step to the spinneret at a flow rate of 0.1mL / h, and connect the spinneret to a 15kV power supply at the same time. Nitrocellulose nanofibers were prepared by electrospinning; the spun fibers were deposited on an aluminum foil with a distance of 10 cm between the aluminum foil and the spinneret; after the spinning was completed, the aluminum foil was dried in a vacuum oven at 60 °C for 2 hour, obtain the nitrocellulose membrane;

[0065] The third step: in a three-necked flask, dissolve the chloroauric acid raw ...

Embodiment 3

[0083] one, Fabrication of Nanofiber Film Blood Lead Color Sensor

[0084] Step 1: Under the condition of room temperature 25°C, stir and dissolve 0.8g of nitrocellulose in 9.2g of acetone and methyl n-butyl ketone in a mixed solvent with a weight ratio of 1:1 in a stirred tank at a speed of 50rpm , stirred for 7 hours to completely dissolve the nitrocellulose;

[0085] Step 2: Under the conditions of room temperature 25°C and humidity 30%, input the nitrocellulose solution prepared in the first step to the spinneret at a flow rate of 1mL / h, and connect the spinneret to a 12kV power supply for static electricity Spinning to prepare nitrocellulose nanofibers; deposit the spun fibers on cardboard, the distance between the cardboard and the spinneret is 10cm; after the spinning is completed, put the cardboard into a vacuum oven at 60°C Dry for 1 hour to obtain a nitrocellulose membrane;

[0086] The third step: in a three-necked flask, dissolve the chloroauric acid raw materia...

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Abstract

The invention discloses a nanofiber membrane blood lead color sensor and a detection method thereof. The preparation method of the nanofiber membrane blood lead color sensor is as follows: dissolving nitrocellulose in a solvent, electrospinning to prepare nanofibers, depositing the fibers on the slide container; preparing protein-modified nano-gold colloids, spotting the plate on Nanofiber membrane center, after drying. The detection method is as follows: the above-mentioned nanofiber film blood lead color sensor is reacted with a standard solution to make a lead ion concentration standard curve; the above-mentioned nanofiber film blood lead color sensor is reacted with the blood sample to be tested, and the change of its spectral information is measured to obtain its concentration of lead ions. The invention has direct-viewing, high-efficiency, and sensitive detection, and presents certain regular color changes; the production equipment is simple, the cost is low, samples do not need to be pretreated, the range of detection substances is wide, there is no harmful substance, and real-time detection can be performed.

Description

Technical field [0001] The invention involves a novel nanofiber film blood lead color sensor and its detection method, which belongs to the field of nano -functional materials. Background technique [0002] Lead is a non -degradable heavy metal. Because of its high density, good resistance, low melting point, softness, easy processing, etc., it is applied in many industrial fields.my country is one of the earliest countries that use lead, and now leader, while serving human beings, also brings many terrible troubles to humans. It exists in daily necessities such as furniture, toys, paint, and even food and food packaging. EssenceMany studies have shown that lead can cause lead poisoning in the human body, and the poisoning process is quite slow and hidden, and it is not easy to detect before the toxic attack.According to the World Health Organization research report, once the human body is attacked by the material that has been contaminated by lead, lead will gradually accumulate...

Claims

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Application Information

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IPC IPC(8): G01J3/46G01N21/25
Inventor 丁彬李彦斯阳任韬俞建勇
Owner DONGHUA UNIV
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