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Preparation method and application of nano-copper cluster probe for detecting iron ions

A nano-copper and cluster technology, applied in the field of iron ion detection, can solve the problems of narrow probe detection range, further improvement in sensitivity, and high cost, and achieve high application value and commercial value, low cost, and low cost.

Inactive Publication Date: 2018-06-29
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, there have been some related reports on iron ion detection probes, but the detection range of these probes is narrow, the cost is high, and the sensitivity needs to be further improved.

Method used

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  • Preparation method and application of nano-copper cluster probe for detecting iron ions
  • Preparation method and application of nano-copper cluster probe for detecting iron ions
  • Preparation method and application of nano-copper cluster probe for detecting iron ions

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Embodiment 1

[0028] A method for preparing a nano-copper cluster probe for detecting iron ions of the present invention, comprising the following steps:

[0029] Add 2.5 mL of 50 mg / mL papain solution to 0.25 mL of 0.5 mM CuSO at room temperature 4 Stir in the solution for 5 min, then add 500 μL of 0.4 M NaOH solution to make the pH of the mixed solution 9.0, stir and incubate at 50 °C for 12 h, the solution changes from colorless to brown, and the nano-copper cluster probe is prepared. That is, a nano-copper cluster probe solution is obtained, wherein the initial concentration of nano-copper in the nano-copper cluster probe solution is 35.5 μM.

[0030] An application of the nano-copper cluster probe prepared in the above-mentioned embodiments of the present invention in the detection of iron ions, comprising the following steps:

[0031] Dilute the nano-copper cluster probe solution prepared above by 80 times, and add 50 μL glycine-sodium hydroxide buffer solution with glycine concentra...

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Abstract

The invention discloses a preparation method and application of a nano-copper cluster probe used for detecting iron ions. The preparation method of the nano-copper cluster probe comprises the following steps: adding papain solution into a CuSO4 solution, stirring, and culturing in an alkaline environment to obtain the nano-copper cluster probe is obtained. The preparation method disclosed by the invention has the advantages of simple technology, mild condition and low cost, the prepared nano-copper cluster probe can be applied to detection of the iron ions, iron ion detection steps are greatly simplified, sensitivity is high, selectivity is good, time consumption is low, and cost is low, and therefore the preparation method disclosed by the invention has high application value and commercial value.

Description

technical field [0001] The invention belongs to the field of iron ion detection, and in particular relates to a preparation method and application of a nanometer copper cluster probe for iron ion detection. Background technique [0002] Iron is an important element necessary for human metabolism. Insufficient iron supply in the human body can cause anemia, affect intelligence and behavior, and lead to lead poisoning. Currently, Fe in environmental water samples 3+ The determination methods mainly include inductively coupled plasma mass spectrometry, chemical analysis titration and electrochemical method, etc. However, these methods have their disadvantages, such as expensive equipment, complicated method, poor stability, time-consuming, low sensitivity, general selectivity, etc. . More importantly, these methods are easily interfered by ferrous ions. Therefore, it is of great significance to find a convenient, simple, ultra-sensitive and high-specificity ferric ion analysi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64C09K11/58B82Y40/00
CPCB82Y40/00C09K11/58G01N21/643
Inventor 郭志陈桂秋曾光明晏铭郭行磐陈安伟胡亮王佳佳黄真真
Owner HUNAN UNIV