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Quenching type fluorescent probe for quickly detecting heavy metal ions

A technology of heavy metal ions and fluorescent probes, applied in the field of environmental chemistry, can solve the problems of increasing demand for rapid detection technology of environmental pollutants, and achieve the effects of low cost, improved detection efficiency, and strong adsorption capacity

Inactive Publication Date: 2018-11-23
上海泽铭环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous development of the economy and the improvement of people's living standards, people's requirements for environmental quality have been continuously improved, and the number and types of environmental samples to be tested have increased rapidly. The traditional detection technology has been unable to meet this demand. Therefore, environmental pollutants The demand for rapid detection technology is getting higher and higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Measure 1mL of carbon dot solution, 50mL of deionized water, and add them to a 100mL beaker at the same time. After stirring evenly, weigh 1g of basic calcium phosphate nanosheets and add them to the beaker, stir for 1 hour, and seal the obtained uniform suspension. The basic calcium phosphate nanoprobe can be obtained. When this probe is used, it is necessary to draw a standard working curve in advance: prepare standard solutions of different concentrations containing the same type of heavy metal ions as the solution to be tested. Then measure the standard solutions of heavy metal copper ions with different concentrations, add 1 ml of the prepared nano-composite quenching fluorescent probe, measure the fluorescence intensity after mixing evenly, and draw the concentration-fluorescence intensity standard working curve. The detection method is to measure 1 ml of basic calcium phosphate nanoprobe, add it to the sewage, mix it thoroughly, detect the fluorescence intensity ...

Embodiment 2

[0019] Measure 1mL of carbon dot solution, 100mL of deionized water, and add them to a 100mL beaker at the same time. After stirring evenly, weigh 2g of basic calcium phosphate nanosheets and add them to the beaker, stir for 1 hour, and seal the obtained uniform suspension. The basic calcium phosphate nanoprobe can be obtained. When this probe is used, it is necessary to draw a standard working curve in advance: prepare standard solutions of different concentrations containing the same type of heavy metal ions as the solution to be tested. Then measure the standard solutions of heavy metal copper ions with different concentrations, add 1 ml of the prepared nano-composite quenching fluorescent probe, measure the fluorescence intensity after mixing evenly, and draw the concentration-fluorescence intensity standard working curve. The detection method is to measure 1 ml of basic calcium phosphate nanoprobe, add it to the sewage, mix it thoroughly, detect the fluorescence intensity...

Embodiment 3

[0021] Measure 30mL of carbon dot solution, 70mL of deionized water, and add them to a 100mL beaker at the same time. After stirring evenly, weigh 1g of basic calcium phosphate nanosheets and add them to the beaker, stir for 1 hour, and seal the obtained uniform suspension. The basic calcium phosphate nanoprobe can be obtained. When this probe is used, it is necessary to draw a standard working curve in advance: prepare standard solutions of different concentrations containing the same type of heavy metal ions as the solution to be tested. Then measure the standard solutions of heavy metal copper ions with different concentrations, add 1 ml of the prepared nano-composite quenching fluorescent probe, measure the fluorescence intensity after mixing evenly, and draw the concentration-fluorescence intensity standard working curve. The detection method is to measure 1 ml of basic calcium phosphate nanoprobe, add it to the sewage, mix it thoroughly, detect the fluorescence intensity...

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Abstract

The invention belongs to the technical field of environment chemicals, and particularly relates to a quenching type fluorescent probe for quickly detecting heavy metal ions. The quenching type fluorescent probe is characterized in that carbon dots and base type calcium phosphate nanometer sheets are used as main raw materials to prepare the base type calcium phosphate / carbon dot nanometer composite quenching type fluorescent probe for detecting the heavy metal ions in water. The quenching type fluorescent probe has the advantages that the preparation method is simple, the cost is lower, and the heavy metal ions in the sewage can be simply and quickly detected.

Description

Technical field [0001] The invention belongs to the technical field of environmental chemistry, and specifically relates to a quenching fluorescent probe for rapid detection of heavy metal ions. Background technique [0002] Certain trace heavy metals are essential trace elements for organisms within a certain concentration range. However, if the amount entering the organism exceeds the limit that the human body can tolerate, it can cause serious physiological damage and induce a variety of diseases. Therefore, it is very necessary to treat environmental wastewater and accurately determine the content of heavy metals and transition metals in polluted water bodies. [0003] The commonly used detection methods at this stage not only have high requirements on instruments and equipment, but also often require a series of enrichment methods to increase the concentration of heavy metal ions in the water to facilitate detection, which undoubtedly increases the cost and process of d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/71G01N21/64
CPCC09K11/71G01N21/643G01N2021/6432
Inventor 徐亮东梅江岚刘金库王爱军王凤蕊詹晓芳
Owner 上海泽铭环境科技有限公司
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