Malachite green selective electrode and manufacturing method thereof
A malachite green and selective technology, which is applied in the direction of material analysis, instruments, and analysis materials through electromagnetic means, can solve the problems of poor reproducibility and precision, prone to false positive results, and unsuitable for on-site testing. Achieve the effect of simple equipment, lower ion diffusion coefficient in the membrane, and low analysis cost
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Embodiment 1
[0039] The first step: the preparation of polystyrene seed aqueous solution:
[0040] Dissolve 2.0g dispersion stabilizer polyvinylpyrrolidone (PVP) in the mixed solution that is made up of 60.4mL ethanol and 7.6mL water, put it into the 250mL four-necked bottle that thermometer, stirrer and condenser are housed, stir to form After the homogeneous system, under nitrogen protection, stir and pre-disperse at 70°C for 30 minutes, then add 30.0g of monomer styrene and 0.3g of initiator azobisisobutyronitrile, and react at 70°C for 24h under stirring and nitrogen protection. The polymer dispersion was washed repeatedly with ethanol, dried, and diluted with water to a concentration of 0.5 g / mL to obtain an aqueous solution of polystyrene seeds;
[0041] The second step: the preparation of RAM-MIPs, the steps are as follows:
[0042] Mix 0.17mL 0.5g / mL polystyrene seed aqueous solution with 0.48mL DBP, 0.02g sodium dodecylsulfonate and 10mL distilled water ultrasonically, stir at ro...
Embodiment 2
[0058] The first step: the preparation of polystyrene seed aqueous solution:
[0059] Dissolve 2.0g of the dispersion stabilizer polyvinylpyrrolidone (PVP) in 68mL of ethanol, put it into a 250mL four-necked bottle equipped with a thermometer, agitator and condenser, stir to form a homogeneous system, and then protect it with nitrogen. Stir and pre-disperse at 70°C for 30min, then add 30.0g of monomer styrene and 0.3g of initiator azobisisobutyronitrile, react at 70°C for 24h under stirring and nitrogen protection, and wash the polymer dispersion repeatedly with ethanol Dry and dilute with water to a concentration of 0.5g / mL to obtain an aqueous solution of polystyrene seeds;
[0060] Others are the same as embodiment 1, such as Figure 2-b .
Embodiment 3
[0062] The first step: the preparation of polystyrene seed aqueous solution:
[0063] Dissolve 4.0g of the dispersion stabilizer polyvinylpyrrolidone (PVP) in a mixed solution composed of 60.4mL of ethanol and 7.6mL of water, put it into a 250mL four-necked bottle equipped with a thermometer, a stirrer and a condenser, and stir until uniform After the phase system, under the protection of nitrogen, stir and pre-disperse at 70°C for 30min, then add 28.0g of monomer styrene and 0.3g of initiator azobisisobutyronitrile, react at 70°C for 24h under stirring and nitrogen protection, and polymerize The dispersion was washed repeatedly with ethanol, dried, and diluted with water to a concentration of 0.5 g / mL to obtain an aqueous solution of polystyrene seeds;
[0064] Others are the same as embodiment 1, such as Figure 2-c .
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