A rapid detection of fe 3+ Methods

A detection method and fast technology, applied in the direction of measuring devices, fluorescence/phosphorescence, material excitation analysis, etc., can solve problems such as the inability to eliminate copper ion interference, weakened fluorescence intensity of test paper, expensive fluorescence detection instruments, etc., and achieve good reusable performance , Excellent reusability performance, intuitive effect of detection method

Active Publication Date: 2021-06-22
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fluorescence detection instruments used in traditional fluorescence detection methods are expensive, inconvenient to carry, and cannot exclude copper ions (Cu 2+ ) and cobalt ions (Co 2+ ) plasma interference, so in Fe 3+ Significant disadvantages in the rapid qualitative detection of
And the fluorescent materials used in traditional fluorescent test papers are all soluble (see: Biosensors and Bioelectronics, 2017, 99, 303-311.), but these test papers based on soluble fluorescent materials detect Fe in the aqueous or organic phases. 3+ When the material is easily dissolved in the aqueous phase or organic phase, the loss or dilution of the material will cause the weakening of the autofluorescence intensity of the test paper, thereby reducing the sensitivity of the test paper.

Method used

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  • A rapid detection of fe <sup>3+</sup> Methods
  • A rapid detection of fe <sup>3+</sup> Methods
  • A rapid detection of fe <sup>3+</sup> Methods

Examples

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Effect test

Embodiment 1

[0049] A rapid detection of Fe 3+ method, the specific method is as follows:

[0050] Preparation of the solution to be tested: prepare different concentrations of Fe 3+ Solution: Fe 3+ The solution concentrations are: 1×10 -2 mol / L, 1×10 -3 mol / L, 1×10 -4 mol / L, 1×10 -5 mol / L, 1×10 -6 mol / L, 1×10 -7 mol / L;

[0051] Further preferably, the measured Fe 3+ The method of contacting the solution with the fluorescent test paper is: drop the solution to be tested on the test paper, or immerse the test paper in the solution to be tested; Fe 3+ The contact method between the solid and the fluorescent test paper is: apply the solid powder or particles to the test paper.

[0052] Detection method: liquid detection: drop the solution to be tested onto Fe 3+ Fluorescence detection test strips, or dip the test strips into the solution to be tested with different concentration gradients, take them out, and let the test strips dry; solid detection: apply solid powder or particles ...

Embodiment 2

[0065] A rapid detection of Fe 3+ method, the specific method is as follows:

[0066] Preparation of the solution to be tested: prepare different concentrations of Fe 3+ Solution: Fe 3+ The solution concentrations are: 1×10 -2 mol / L, 1×10 -3 mol / L, 1×10 -4 mol / L, 1×10 -5 mol / L, 1×10 -6 mol / L, 1×10 -7 mol / L;

[0067] Detection method: Fe 3+ Fluorescence detection test strips were immersed in different concentration gradients of Fe 3+ In the solution, after the test strip is dried, it is irradiated with light at a wavelength of 365nm ultraviolet light, and the test strip has different concentrations of Fe 3+ The solution showed different degrees of quenching phenomenon, so as to achieve the Fe in sewage 3+ Qualitative detection of the test results such as Figure 6 , Figure 7 shown.

[0068] After the test, soak the test paper in 100mL absolute ethanol for 4min, Fe 3+ Dissolved in ethanol, the fluorescence intensity of the test paper recovers and can be used for ...

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Abstract

The present invention relates to a kind of rapid detection Fe 3+ method, using Fe 3+ Detection test paper is used for Fe in solid or in solution 3+ Trace detection of Fe 3+ The detection minimum concentration is 10 ‑7 mol / L, said Fe 3+ The detection test paper is the detection test paper loaded with fluorescent material on the filter paper, Fe 3+ After the detection test paper is reused twice, the fluorescence intensity can maintain more than 90% of the initial intensity, and after 10 times of repeated use, the fluorescence intensity can still maintain more than 75% of the initial fluorescence intensity. The detection method of the present invention is accurate, fast, and has high sensitivity. 3+ It has strong selectivity and can exclude the interference of other metal ions. The Fe used 3+ The fluorescent material loaded on the detection test paper is insoluble in the aqueous phase or organic phase, and the fluorescence intensity and sensitivity of the test paper itself remain unchanged during the detection process, enabling trace detection.

Description

technical field [0001] The present invention relates to a kind of rapid detection Fe 3+ The method belongs to the technical field of metal ion detection. Background technique [0002] Iron ions (Fe 3+ ) is a ubiquitous metal ion in cells and plays a vital role in various cellular functions. Because iron ions are prone to redox reactions and have a strong affinity with oxygen, they play an important role in DNA and RNA metabolism and electron transfer processes. A large number of iron ions in the body are closely related to the transportation and storage of various enzymes and specific proteins. They are found in organic anions (phosphates and carboxylates), multiple ligands (ie, chelates, polypeptides), and on the surface of cell membranes. Small amounts of Fe are also present in the composition or extracellular matrix (glycans and sulfonates) 3+ . Under normal circumstances, the liver stores and fixes a large amount of iron. If iron is excessively deposited in the live...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/643G01N2021/6432
Inventor 王灯旭孙瑞雪冯圣玉刘鸿志
Owner SHANDONG UNIV
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