Application of botanical photostabilizer in pesticides
A light stabilizer and biological source pesticide technology, applied in the field of pesticides, can solve problems that have not been used in the application of light stabilizers, and achieve the effect of delaying photolysis
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Embodiment 1
[0013] Embodiment 1: the influence of bamboo vinegar liquid on the photolysis of thiamethoxam in water
[0014] The bamboo vinegar liquid described in the present embodiment is that the purchased bamboo vinegar stock solution is heated and vacuum-distilled in the laboratory, and the distilled liquid is collected. Taking the insecticide thiamethoxam as the pesticide to be tested, bamboo vinegar solutions of different dilutions were added to the aqueous solution of thiamethoxam, under simulated sunlight (xenon lamp, 300-800nm) and ultraviolet light (high pressure mercury lamp, 300w) The photolysis half-life of thiamethoxam in aqueous solution was detected by high performance liquid chromatography.
[0015] Table 1 Effects of different dilutions of bamboo vinegar on the photolysis of thiamethoxam under simulated sunlight (the initial concentration of thiamethoxam in the reaction solution is 30mg / L)
[0016]
[0017] It can be seen from Table 1 that under simulated sunlight, t...
Embodiment 2
[0025] Embodiment 2: the influence of wood vinegar on the photolysis of thiamethoxam in water
[0026] The wood vinegar described in this embodiment is the wood vinegar distillate purchased from the market, and the insecticide thiamethoxam is used as the pesticide for testing, and the wood vinegar of different dilution multiples is added to the aqueous solution of thiamethoxam , under the irradiation of a high-pressure mercury lamp, the photolysis half-life of thiamethoxam in aqueous solution was detected by high performance liquid chromatography.
[0027] Table 4 Effects of different dilution ratios of wood vinegar on the photolysis of thiamethoxam under a high-pressure mercury lamp light source (the initial concentration of thiamethoxam in the reaction solution is 30mg / L)
[0028]
[0029] As can be seen from Table 4, after adding wood vinegar in the aqueous solution of thiamethoxam, the photolysis half-life of thiamethoxam is extended, and when thiamethoxam is mixed with...
Embodiment 3
[0030] Embodiment 3: the influence of bamboo vinegar liquid on the photolysis of azadirachtin a in water
[0031] The bamboo vinegar liquid described in the present embodiment is that the purchased bamboo vinegar stock solution is heated and distilled in the laboratory, and the distilled liquid is collected. Taking the biological source insecticide azadirachtin a as the pesticide to be tested, bamboo vinegar solutions of different dilution multiples were added to the aqueous solution of azadirachtin a, and under the irradiation of ultraviolet light (high pressure mercury lamp, 300w), with high-efficiency liquid The photolysis half-life of azadirachtin a in aqueous solution was detected by phase chromatography.
[0032] Table 5 Effects of different dilutions of bamboo vinegar on the photolysis of azadirachtin a under high-pressure mercury lamp light source (the initial concentration of azadirachtin a in the reaction solution is 5mg / L)
[0033]
[0034] It can be seen from T...
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