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CTS-ZnO fluorescent test paper and preparation method and application thereof

A technology of test paper and fluorescence, which is applied in the field of analytical chemistry, can solve problems such as the reduction of luminous intensity, and achieve the effects of short detection time, good application prospects, and simple operation

Active Publication Date: 2016-01-13
QUFU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This leads to problems such as a significant reduction in luminous intensity

Method used

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  • CTS-ZnO fluorescent test paper and preparation method and application thereof
  • CTS-ZnO fluorescent test paper and preparation method and application thereof
  • CTS-ZnO fluorescent test paper and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A CTS-ZnO fluorescent test paper, characterized in that: it is composed of medium-speed filter paper impregnated with silanized nano-zinc oxide, and the loading capacity of silanized nano-zinc oxide is 0.010mg / mm 2 , Test paper size: length x width x thickness 50.00mm x 8.00mm x 0.40mm; CTS-ZnO fluorescent test paper is white;

[0038] Its preparation method comprises the following steps:

[0039] 1) Preparation of silanized nano-zinc oxide (CTS-ZnO) solution: Zn(AC) 2 2H 2 O and ethanol were mixed, then 3-chloropropyl triethoxysilane with a purity of 98% was added, stirred at room temperature for 10 min, and then LiOH·H 2 O, stirred until all dissolved to obtain silanized nano-zinc oxide solution; described silane and Zn(AC) 2 2H 2 O, ethanol, LiOH·H 2 The ratio of the amount of substance of O is 1:0.2:100:1.

[0040]2) Hydrophobic treatment of test paper strips: Soak the test paper base material in a mixed solution of hexadecyltrimethoxysilane and absolute ethan...

Embodiment 2

[0043] A CTS-ZnO fluorescent test paper, characterized in that: it is composed of absorbent paper impregnated with no fluorescent whitening agent and loaded with silanized nano-zinc oxide, and the loading capacity of silanized nano-zinc oxide is 0.010mg / mm 2 , Test paper size: length x width x thickness 50.00mm x 8.00mm x 0.40mm; CTS-ZnO fluorescent test paper is white;

[0044] Its preparation method comprises the following steps:

[0045] 1) Preparation of silanized nano-zinc oxide (CTS-ZnO) solution: Zn(AC) 2 2H 2 O and ethanol were mixed, then 3-chloropropyl triethoxysilane with a purity of 98% was added, stirred at room temperature for 10 min, and then LiOH·H 2 O, stirred until all dissolved to obtain silanized nano-zinc oxide solution; described silane and Zn(AC) 2 2H 2 O, ethanol, LiOH·H 2 The ratio of the amount of substance of O is 1:0.8:300:3.

[0046] 2) Hydrophobic treatment of test paper strips: Soak the test paper base material in a mixed solution of hexade...

Embodiment 3

[0049] A CTS-ZnO fluorescent test paper, characterized in that: it is composed of medium-speed filter paper impregnated with silanized nano-zinc oxide, and the loading capacity of silanized nano-zinc oxide is 0.010mg / mm 2 , Test paper size: length x width x thickness 50.00mm x 8.00mm x 0.40mm; CTS-ZnO fluorescent test paper is white;

[0050] Its preparation method comprises the following steps:

[0051] 1) Preparation of silanized nano-zinc oxide (CTS-ZnO) solution: Zn(AC) 2 2H 2 O and ethanol were mixed, then 3-chloropropyl triethoxysilane with a purity of 98% was added, stirred at room temperature for 10 min, and then LiOH·H 2 O, stirred until all dissolved to obtain silanized nano-zinc oxide solution; described silane and Zn(AC) 2 2H 2 O, ethanol, LiOH·H 2 The ratio of the amount of substance of O is 1:0.5:200:2.

[0052] 2) Hydrophobic treatment of test paper strips: Soak the test paper base material in a mixed solution of hexadecyltrimethoxysilane and absolute etha...

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Abstract

The invention discloses a CTS-ZnO fluorescent test paper comprising a test paper matrix material impregnated and loaded with silanization nano zinc oxide, wherein the load capacity of the silanization nano zinc oxide is 0.010 mg / mm<2>, and also provides a preparation method and application of the test paper. A silanization nano zinc oxide material with fluorescence characteristics and high water stability is prepared and solidified on the surface of the test paper matrix material to prepare the CTS-ZnO fluorescent test paper; and a portable fluorescence intensity measurement instrument is employed to determine the concentration of seleninic acid ions. The employed fluorescent test paper strip is cheap, portable and shows the integrated design characteristics; the quantitative method is intuitive and fast, and fluorescence intensity changes can be observed through the visual discoloration; and the concentration of seleninic acid ions in the solution to be tested can be determined directly. The method has the advantages of simple operation, short detection time and high sensitivity, and adapts to rapid, sensitive and trace rapid test of seleninic acid ion content in all kinds of water and on-site application.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry and relates to a CTS-ZnO fluorescent test paper and a preparation method thereof, which can be used for detecting radioactive selenite ions. Background technique [0002] Nuclear safety is a major livelihood issue, which is closely related to the health of the people and the harmony and stability of the society. Ensuring environmental safety has become a major and urgent task in my country's economic and social development. In recent years, the situation of environmental nuclear pollution caused by the construction of nuclear power plants has become increasingly severe. The use of nuclear energy will produce radioactive nuclear waste, in addition to uranium and 235 Fission products of U, important radioactive fission products include 137 Cs, 90 Sr, 140 Ba, 129 I. 79 Se et al. in 137 Cs, 90 Sr and 79 Se has the longest half-life and causes great damage to human tissues and ce...

Claims

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Application Information

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IPC IPC(8): G01N21/64
Inventor 王桦李淑英崔亚琪白玉龙张营付可娜
Owner QUFU NORMAL UNIV
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