Preparation and application of a low-temperature freezing and disinfecting liquid
A low-temperature freezing and disinfectant technology, used in applications, biocides, disinfectants, etc., can solve the problems of ineffective virus inactivation, inappropriate large-scale killing, and harm to the human body, achieving high inactivation rate and simple structure. , the effect of easy operation
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Embodiment 1
[0054] like figure 1 Shown in the flowchart of the steps, a preparation method of micro-nano zinc that can kill bacteria and inactivate viruses, comprising the following steps:
[0055] Step 1.1: Dissolve 50 mL of nonylphenol polyoxyethylene ether and 30 mL of n-octanol in 120 mL of cyclohexane, stir with 20 mL of isoamyl alcohol and 200 mL of deionized water to prepare a WPO inverse microemulsion system;
[0056] Step 1.2: Add 1000 mL of zinc salt aqueous solution (a mixture of zinc citrate and zinc nitrate) with a concentration of 450 g / L and 1000 mL of hydrazine hydrate solution into 3600 mL of WPO reversed-phase microemulsion and mix, and react at 65°C for 6.5 hours at 4600 rpm. , to obtain a zinc particle solution with a particle size of 10 nm to 600 nm;
[0057] Step 2.1: Transfer the prepared zinc particle solution to the next reaction kettle, stir at 60 ° C and 4600 rpm rotating speed, and pass in high-speed air flow at the same time to form a cavitation phenomenon; ...
Embodiment 2
[0063] The micro-nano zinc solution prepared in Example 1 is configured into a micro-nano zinc aqueous solution with a concentration of 1000mg / kg, and then successively diluted into a micro-nano zinc solution with a concentration of 800mg / kg, 500mg / kg, 400mg / kg, 300mg / kg Aqueous solution, the concentration is 1000mg / kg, 800mg / kg, 500mg / kg, 400mg / kg, 300mg / kg micro-nano zinc aqueous solution is marked as group 5, group 4, group 3, group 2, group 1, according to "Disinfection Technology" Standard "Suspension Quantitative Method to determine the bactericidal rate of micro-nano zinc aqueous solution, the test strains are Escherichia coli, Staphylococcus aureus, Candida albicans, Pseudomonas aeruginosa, and the test time is 20s, 30s, 60s respectively; the test results are shown in Table 1. As shown, the micro-nano zinc aqueous solutions of groups 1 to 5 with different concentrations acted on Escherichia coli, Staphylococcus aureus, Candida albicans, and Pseudomonas aeruginosa for 20...
Embodiment 3
[0067] The micro-nano zinc solution prepared in Example 1 is configured into a micro-nano zinc aqueous solution with a concentration of 1000 mg / kg, and then successively diluted into a concentration of 800 mg / kg, 500 mg / kg, 400 mg / kg, 300 mg / kg. Micro-nano zinc aqueous solution, with concentrations of 1000mg / kg, 800mg / kg, 500mg / kg, 400mg / kg, 300mg / kg, were marked as group 5, group 4, group 3, group 2, and group 1. The "Technical Specification for Disinfection" measures the virus inactivation rate of the micro-nano zinc aqueous solution. The test viruses are polio virus, influenza A virus H1N1, enterovirus, and avian influenza virus H5N1, and the test time is 10s, 20s, and 30s respectively; The results are shown in Table 2.
[0068] Table 2 The effect of micro-nano zinc solution on virus inactivation at different times
[0069]
[0070] The commercially available 3% hydrogen peroxide disinfectant is diluted, and the concentration is successively diluted into the hydrogen pe...
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