A kind of rubidium or cesium ion detection reagent combination, kit and detection method

A detection kit and detection method technology, applied in the field of rubidium or cesium ion detection reagents, can solve the problems of time-consuming, complex operation, high detection cost, etc., and achieve the effect of simple operation, high sensitivity and high sensitivity

Active Publication Date: 2022-08-02
CIXI INST OF BIOMEDICAL ENG NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Instrumental analysis generally has the disadvantages of high detection cost, time-consuming and complicated operation

Method used

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  • A kind of rubidium or cesium ion detection reagent combination, kit and detection method
  • A kind of rubidium or cesium ion detection reagent combination, kit and detection method
  • A kind of rubidium or cesium ion detection reagent combination, kit and detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0103] As an embodiment, the method includes:

[0104] (s1) providing a sample solution to be tested;

[0105] (s2) mixing the sample solution to be tested, the ligand solution and the 2-mercapto-6-nitrobenzothiazole-modified gold nanoparticle solution, and adjusting the pH to form a detection mixture;

[0106] (s3) Detecting the spectroscopic characteristics of the detection mixture, thereby obtaining the measurement result.

[0107] Optionally, the spectroscopic feature is selected from at least one of color, visible light absorption intensity, and absorption spectral peaks.

[0108] As an embodiment, the method includes: setting a standard sample of known concentration, and obtaining the concentration of the sample to be tested by comparing the spectral characteristics of the standard sample and the detection mixture.

[0109] Wherein, the preparation method of described standard sample comprises the steps:

[0110]The detection mixture is compared with the standard samp...

Embodiment 1

[0144] Example 1 Rb in river water and lake water samples + detection

[0145] (1) Collect water samples to be tested: Collect water samples at a certain depth (20-30 cm) at three different locations in river water and lake water. In order to ensure a good detection effect, it is necessary to filter the obtained mixed solution with filter paper to remove impurities, and the obtained filtrate is the water sample to be detected, and the pH value is adjusted to 5.

[0146] (2) Preparation of detection solution: 15mL of 5mM chloroauric acid solution was added to 100mL of ultrapure water, under stirring conditions, 3.75mL of 0.1M potassium borohydride aqueous solution was added as a reducing agent, and after 30min of reaction, the obtained Gold nanoparticle solution, add freshly prepared 2-mercapto-6-nitrobenzene with a concentration of 0.5mM in a volume ratio of gold nanoparticle solution to 2-mercapto-6-nitrobenzothiazole solution of 1250:1 2-mercapto-6-nitrobenzothiazole-modif...

Embodiment 2

[0152] Example 2 Rb in water samples from salt lakes and chlor-alkali industries + detection

[0153] (1) Collection of water samples to be tested: collect water samples at regular intervals (1h) at the sampling position of the waste water discharge port, and then mix equal amounts to form a mixed sample. In order to ensure a good detection effect, it is necessary to filter the solution with filter paper to remove impurities , the obtained filtrate is the water sample to be detected, and the pH value is adjusted to 6.

[0154] (2) Preparation of detection solution: 15mL of 5mM chloroauric acid solution was added to 100mL of ultrapure water, under stirring conditions, 3.75mL of 0.1M sodium borohydride aqueous solution was added as a reducing agent, and after 30min of reaction, the obtained Gold nanoparticle solution, add freshly prepared 2-mercapto-6-nitrobenzothiazole with a concentration of 0.4mM in a volume ratio of 1000:1 of gold nanoparticle solution and 2-mercapto-6-nitr...

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Abstract

The present application discloses a detection reagent combination, a kit and a detection method for rubidium or cesium ions. The detection reagent combination includes component (a): a solution of gold nanoparticles modified by a modifier, or used to form the modified gold nanoparticle solution. A reagent component of an agent-modified gold nanoparticle solution, wherein the modifier is a thiol compound containing a benzene ring; Component (b): a ligand solution, or a reagent component for forming the ligand solution; the ligand The body solution is selected from at least one of dibenzo-21-crown-7 solution, dialkyldibenzo-21-crown-7 solution, and benzo-21-crown-7 solution. The detection method for rubidium or cesium ions provided in this application only uses naked eye colorimetry, that is, both can reach a minimum of 1×10 ‑5 The lower detection limit of mol / L; the method of the invention combined with the instrumental analysis means can also detect lower concentrations of rubidium or cesium ions, and has very high sensitivity.

Description

technical field [0001] The application relates to a detection reagent for rubidium or cesium ions, and a detection method thereof, belonging to the field of detection of heavy and dilute alkali metal ions. Background technique [0002] Rubidium and cesium are a class of extremely important rare and precious metal elements, and their electrical and thermal conductivity are the best among all known materials. Cesium and rubidium have excellent optoelectronic properties and are the best materials for manufacturing photocells and photovoltaic cells, as well as essential materials for infrared technology. my country has abundant rubidium and cesium resources, and the types are complete and distributed throughout the country. The brines of salt lakes in Qinghai and Tibet are extremely rich in rubidium and cesium, which are the future rubidium and cesium resources to be developed in my country. [0003] The detection methods of rubidium or cesium ions in salt lake brine mainly in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78G01N33/18
CPCG01N21/78G01N33/1813G01N2021/775
Inventor 张玉杰付玲吴爱国
Owner CIXI INST OF BIOMEDICAL ENG NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI
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