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Method for detecting water pollutants based on fluorescent MOF-plant hybrid

A water pollutant and detection method technology, applied in the field of pollutant detection, can solve the problems of long-term toxicity, difficult collection of MOF nanoparticles, etc., and achieve the effect of reducing pollution and detecting sensitively

Pending Publication Date: 2020-08-14
山东澳联新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, for on-site detection, MOF nanoparticles are difficult to collect in the water environment and have potential long-term toxicity to the ecosystem. Therefore, it is very necessary to find a suitable MOF immobilization substrate.

Method used

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  • Method for detecting water pollutants based on fluorescent MOF-plant hybrid
  • Method for detecting water pollutants based on fluorescent MOF-plant hybrid
  • Method for detecting water pollutants based on fluorescent MOF-plant hybrid

Examples

Experimental program
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Effect test

Embodiment 1

[0069] (1) Material preparation: plant syringa was purchased from Flower Power Garden Center Glenhaven (New South Wales, Australia), see image 3 . The whole plant symphysis was used to grow fluorescent MOF in situ, and symphysis can grow in water, which is an ideal choice for aqueous culture to form fluorescent MOF-plant hybrids. Fresh plants were cultured in tap water (the water was changed every two days, and the cultivation water always had enough oxygen), and the roots were washed with tap water before the experiment. Terbium chloride hexahydrate (TbCl 3 ﹒ 6H 2 O) was purchased from Sigma Aldrich (Australia). Disodium terephthalate (Na 2 BDC) was purchased from TCI (USA). All other reagents were purchased from Sigma Aldrich (Australia) and used without further purification.

[0070] (2) Pure Tb 2 (BDC) 3 Formation of MOFs: Separate preparation of TbCl in deionized water 3 ·6H 2 O (20mM, 1mL) and Na 2 (BDC) (20 mM, 1 mL) solution. The two solutions were mixed ...

Embodiment 2

[0079] Steps (1)-(4) are the same as in Example 1.

[0080] (5) Detection of environmental pollutants by fluorescent MOF-plant hybrids: Enter the fluorescent images of fluorescent MOF-plant hybrids before and after 4 hours of pollutant cultivation under the excitation of a UV lamp at a wavelength of 254 nm in the smartphone App. Images of the MOF-plant hybrids were captured using a smartphone camera and then cropped out for fluorescent regions. Images cropped from your smartphone camera roll can be loaded directly into the app. The average hue-saturation value (HSV) is obtained by converting the red-green-blue (RGB) values ​​of each pixel from the cropped image through a matrix transformation algorithm. Further establish the model between the HSV of the image and the concentration of pollutants, obtain the Δ intensity by clicking the "GenerateΔIntensity and Concentration" button in the application, calculate the linear fitting equation of different analytes through the Origin...

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Abstract

The invention belongs to the technical field of pollutant detection, and particularly relates to a method for detecting water pollutants based on fluorescent MOF-plant hybrids. The method comprises the steps: embedding a fluorescent MOF into a plant body to prepare a fluorescent MOF-plant hybrid, and quantitatively detecting the content of water pollutants by adopting the fluorescent MOF-plant hybrid. According to the invention, the fluorescent MOF is embedded into the plant body, a new function is given to the plant, and the MOF can be fixed, so the pollution of the MOF to the water environment is reduced, the detection limit of environmental pollutants is low enough, and the detection is sensitive; a smartphone APP is adopted for auxiliary analysis, and the method can be used for on-sitein-situ detection of the water pollutants.

Description

technical field [0001] The invention belongs to the technical field of pollutant detection, and in particular relates to a method for detecting water body pollutants based on fluorescent MOF-plant hybrids. Background technique [0002] With the rapid development of industry, agriculture, military and human social activities, a large number of toxic metal ions and organic pollutants are released into environmental water bodies, causing serious adverse effects on the environment and human health. The intake of various toxic metal ions and organic pollutants that exceed the allowable levels of the human body will bring about the risk of various diseases. For example, iron ions (Fe 3+ ), copper ions (Cu 2+ ), silver ions (Ag + ), cadmium ions (Cd 2+ ) and aniline intake may lead to conditions such as Parkinson's disease, pancreatic disease, liver disease, heart disease, Alzheimer's disease, organ failure, and certain cancers. Considering the rising risks associated with hum...

Claims

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Application Information

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IPC IPC(8): G01N21/64G01N33/18C09K11/06A01G7/06
CPCG01N21/6428G01N33/1813G01N33/1826C09K11/06A01G31/00A01G7/06G01N2021/6439C09K2211/182
Inventor 甄崇礼梁洁莹梁康
Owner 山东澳联新材料有限公司
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