Adsorption method for preparing hydroxyapatite pesticide and slow-release fertilizer compound
A technology of hydroxyapatite and nano-hydroxyapatite, which is applied in fertilizer mixtures, agriculture, fertilization devices, etc., can solve the problems of low drug loading, uneven drug loading, and incomplete release, so as to improve soil and facilitate The effect of continuous production and accelerated release
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Embodiment 1
[0019] Take 100 mg of hydroxyapatite nano-particle powder, soak in phosphate buffer solution with pH 6.5 for 2 hours, then ultrasonically disperse for 10 minutes, then add 50 mg of abamectin, stir continuously for 2 hours, and centrifuge the reaction solution at 10,000 rpm / min for 15 minutes at room temperature , and the precipitate was dried at room temperature for 48 hours to obtain the abamectin complex, which was stored at 4°C. characterization see figure 1 , figure 2 , SEM photo see image 3 .
Embodiment 2
[0021] Take 100 mg of hydroxyapatite nanoparticle powder, soak it in the phosphate buffer solution with pH 7.0 for 3 hours, and then ultrasonically disperse it for 15 minutes. Dry at room temperature for 36 h, and store the complex at 4°C.
Embodiment 3
[0023] Take 200 mg of hydroxyapatite nanoparticle powder, soak in phosphate buffer solution with pH 7.5 for 4 hours, then ultrasonically disperse for 5 minutes, then add 300 mg of copper sulfate, stir continuously for 3 hours, centrifuge the reaction solution at 12000 rpm / min for 10 minutes at room temperature, and precipitate Dry at room temperature for 48 h, and store the complex at 4°C.
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