Paper-based micro-fluidic chip with multi-channel heavy metal ion detection function

A heavy metal ion, multi-channel detection technology, applied in material analysis by observing the influence of chemical indicators, measuring devices, material analysis by optical means, etc. On-site measurement, not easy to carry, etc.

Active Publication Date: 2018-12-21
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Due to the high price, high operation cost, and inconvenient portability of traditional methods for detecting hea...

Method used

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  • Paper-based micro-fluidic chip with multi-channel heavy metal ion detection function
  • Paper-based micro-fluidic chip with multi-channel heavy metal ion detection function
  • Paper-based micro-fluidic chip with multi-channel heavy metal ion detection function

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Embodiment Construction

[0025] refer to Figure 1 to Figure 11 The shape structure in is a paper-based microfluidic chip for multi-channel detection of heavy metal ions, which consists of a first layer 11, a second layer 12 and a third layer 13 of paper substrates and a bottom support substrate 26. It is characterized in that: the chip is circular or rectangular, and is pasted together by three layers of paper substrates with the same shape and size and treated with superhydrophobic treatment. For example, the paper for making chips is dissolved in n-hexane solution with a volume ratio of methyltrichlorosilane and octadecyltrichlorosilane of 7:3 at room temperature, and stirred evenly, and the concentration of the mixed solution is 0.1%. Then, put the selected filter paper into the previous solution, soak it for 5 minutes, take it out, and place it in a constant temperature drying oven for 5 minutes to prepare it.

[0026] The first layer 11 is processed on the first layer of paper substrate accordi...

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Abstract

The invention provides a paper-based micro-fluidic chip with a multi-channel heavy metal ion detection function. The paper-based micro-fluidic chip is composed of a first layer of paper substrate, a second layer of paper substrate, a third layer of paper substrate and a bottom layer supporting substrate, and is characterized in that the chip is round or rectangular, and the three layers of paper substrates which are consistent in shape and size and are subjected to hydrophobic treatment are pasted together. The chip is provided with a color developing tank, a gradient channel, a reaction tank,a reagent channel, a reagent port, a sample port, a filter tank, a diversion tank, a diversion channel and a filtrate mutual channel with specific shapes and sizes. According to the chip, various functional components are arranged in a star shape by taking the sample port as a center. Or the sample port and the reagent port are taken as the center separately, and a left center and a right centerare formed, and the other functional components are arranged in the middle of the sample port and the reagent port. The paper-based micro-fluidic chip has the beneficial effects that the chip is disposable, the material adopts the low-price degradable filter paper, and the chip is environment-friendly and pollution-free, so that secondary damage to the environment is avoided; and continuous, real-time and rapid detection of heavy metal ions can be realized for environmental monitoring.

Description

technical field [0001] The invention relates to a paper-based microfluidic chip for quickly detecting the concentration of heavy metal ions in petroleum wastewater by using colorimetry and multiple channels. technical background [0002] With the development of social economy, the social environment is getting more and more polluted. Petroleum wastewater is one of the pollution sources in today's society. Petroleum wastewater contains a large amount of toxic and harmful substances such as oil substances and heavy metals, which will cause harm to the environment and human health. At present, the detection of heavy metal ions in petroleum wastewater has attracted extensive attention. Therefore, researchers have invented various methods to detect heavy metal ions. Due to the high price, high operation cost, and inconvenient portability of traditional methods for detecting heavy metals, they cannot meet the requirements of continuous monitoring and on-site determination of pet...

Claims

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Application Information

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IPC IPC(8): G01N21/78G01N21/01
CPCG01N21/01G01N21/78Y02A20/20
Inventor 徐文峰廖晓玲徐紫宸黄金霞
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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