A recognition film for detecting cadmium ions in water body and its preparation method and application
A technology of cadmium ions and water bodies, which is applied in the direction of analyzing materials through chemical reactions, and analyzing materials through observing the influence of chemical indicators. It can solve the problems of complex operation, low detection sensitivity, and high cost. Effects of simplicity, shortened experiment time, and reduced reaction time
Active Publication Date: 2020-06-23
SHENZHEN UNIV
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[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a recognition membrane for detecting cadmium ions in water bodies and its preparation method and application, aiming at solving the problems of complicated operation and problems in the detection of cadmium ions in water bodies in the prior art. Problems of low detection sensitivity, long cycle time and high cost
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[0025] The present invention provides a recognition membrane for detecting cadmium ions in water and its preparation method and application. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0026] see figure 1 , figure 1 It is a flow chart of a preferred embodiment of a method for preparing a recognition membrane for detecting cadmium ions in water bodies according to the present invention, as shown in the figure, wherein it includes steps:
[0027] S10. Put the polysulfone membrane into the monomer solution of 3-propyl methacrylate potassium salt, and irradiate with ultraviolet light for 20-60 minutes to obtain polysulfone connected with 3-propyl methacrylate potassium salt monomer membrane;
[0028] ...
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A method for preparing a detection membrane for detecting cadmium ions in a body of water. The preparation method comprises: placing a polysulfone membrane into a solution of potassium 3-sulfopropyl methacrylate monomer, and irradiating the same with ultraviolet rays for 20-60 minutes, to obtain a polysulfone membrane grafted with the potassium 3-sulfopropyl methacrylate monomer; and placing the polysulfone membrane grafted with the potassium 3-sulfopropyl methacrylate monomer into a porphyrin solution and reacting for 15-24 hours, to give a detection membrane for detecting cadmium ions in a body of water. Further disclosed are a detection membrane prepared using the above method, and an application of the detection membrane for detecting cadmium ions in a body of water, enabling quick and accurate detection of trace amounts of cadmium ions in bodies of water to be tested.
Description
technical field [0001] The invention relates to the field of heavy metal detection, in particular to an identification film for detecting cadmium ions in water, a preparation method and application thereof. Background technique [0002] In recent years, with the rapid development of science and technology, the use of cadmium has become more and more extensive, the demand and output of cadmium are also increasing year by year, and the content of cadmium entering the environment is gradually increasing accordingly. Cadmium mainly comes from industrial wastewater, such as electroplating wastewater discharge, nickel-cadmium battery manufacturing, fertilizer and pesticide production, pigment, dye and textile industries, smelting and alloy manufacturing, steel, cement production, sewage sludge, mining and ore Refining etc. As one of the heavy metals, cadmium accumulates in the human body and will cause damage to important organs such as kidneys, bones, liver, central nervous syst...
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IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 刘长坤王琳
Owner SHENZHEN UNIV