CN104055198A - Method for degrading pesticide residues on fruit and vegetables - Google Patents
Method for degrading pesticide residues on fruit and vegetables Download PDFInfo
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- CN104055198A CN104055198A CN201410254888.1A CN201410254888A CN104055198A CN 104055198 A CN104055198 A CN 104055198A CN 201410254888 A CN201410254888 A CN 201410254888A CN 104055198 A CN104055198 A CN 104055198A
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Abstract
The invention provides a method for degrading pesticide residues on fruit and vegetables. The method comprises the steps of mixing, adjusting pH, performing ultrasonic oscillation and UV (ultraviolet light)-irradiation. The steps are specifically as follows: mixing nanometer TiO2 with ozone water and adjusting pH to 11-12 with a pH modifier; performing ultrasonic oscillation, thereby acquiring a mixed solution; putting the fruit and vegetables into the mixed solution, introducing air into the mixed solution and irradiating for 20min-90min with a UV lamp, thereby finishing the degrading of the pesticide on the fruit and vegetables. According to the invention, after photocatalysis and ozone combined degradation, the pesticide residues on the fruit and vegetables are quickly degraded. The method has the advantages of high efficiency, low cost, safety, environmental protection, and the like.
Description
Technical field
The present invention relates to a kind of biodegrading process of agricultural chemicals, relate in particular to a kind of method of the garden stuff pesticide residue of degrading.
Background technology
Agricultural chemicals is that the mankind are for preventing and treating agriculture forest and husbandry disease, grass-and-insect painting evil and other harmful organism, control the growth regulating of crop, improve the adjuvant of drug effect, a large amount of agricultural chemicals that fact proved are indelible in the contribution aspect production guarantor's receipts of farming and animal husbandry and prevention and the control of preservation and infectious disease.The sick worm harm suffering due to agricultural product such as weather turn warm, and the oranges and tangerines marquis phase is long, and pest species is various, fruits and vegetables is in recent years on the rise.Do not support the use for the anti-control techniques of disease and pest at present, a large amount of uses such as pesticide, bactericide, herbicide are caused, add that orchard worker lacks consciousness and the knowledge of using agricultural chemicals safely, the overdose of agricultural chemicals and Use overrun and gather etc. not according to personal distance interval, cause the residues of pesticides of the fruits and vegetables phenomenon that exceeds standard serious.Due to the excessive use of agricultural chemicals, be difficult to decompose, ecological environment, health have been caused to inevitable injury too.People are edible have residues of pesticides fruits and vegetables material, not only may produce acute toxicity as expiratory dyspnea, the symptom such as dizzy, also may cause the sudden change of chronic toxicity modificator gene, cause the ratio of cancer, deformity to significantly improve.Along with people constantly improve the requirement of Safety of Food Quality and living environment, to food quality monitoring, the requirement of persticide residue etc. is also improved constantly.
At present mainly contain organophosphorus insecticide, pyrethroid, carbamates and organic chlorine agriculture chemicals for the common pesticides on agricultural product.And the main residues of pesticides that adopt the methods such as clear water immersion, peeling, heating to remove fruits and vegetables in prior art, these methods are little to the effect of removal residues of pesticides, and are unfavorable for the storage of fruits and vegetables, and using value is little.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, and the biodegrading process of the fruit and vegetable residual pesticide of a kind of efficient, low cost, safety, environmental protection is provided.
A kind of method that the invention provides garden stuff pesticide residue of degrading, comprises the following steps:
S1: by nano-TiO
2mix with Ozone Water, regulating pH by pH adjusting agent is 11～12;
S2: then carry out sonic oscillation and obtain mixed solution;
S3: fruits and vegetables are put into mixed solution, pass into air in mixed solution, with ultra violet lamp 20min～90min, complete fruits and vegetables degradation of pesticide.
Further, nano-TiO in above-mentioned S1 step
2concentration be preferably 0.25mg/mL～0.8mg/mL; Consistency of ozone water is preferably 30mg/L～70mg/L; Nano-TiO
2be preferably the powder of diameter 20～50nm, nano-TiO
2be preferably anatase.
Further, in S1 step, pH adjusting agent is preferably Na
2cO
3solution or NaOH solution.
Further, the intensity 40W/cm of sonic oscillation in S2 step
2～75W/cm
2, frequency 20kHz～40kHz.
Further, in S3 step, be 80～120mL/min to passing into air velocity in alkaline mixed solution.
Innovative point of the present invention is:
The present invention adopts nano titanium oxide, ozone to act synergistically under illumination condition to reach the object of the remains of pesticide in degraded fruits and vegetables, and wherein the efficiency of nano titanium oxide catalyzing oxidizing degrading agricultural chemicals under ultraviolet light (hv) irradiates is high, and TiO
2this can not cause secondary pollution as inertia, non-toxic compound; And ozone is the strong oxidizer of a kind of safety, health, noresidue, can react with residual organic matter agricultural chemicals in vegetables, fruit, make the two bond fissions of pesticide molecule, phenyl ring open loop, destructurized, generate corresponding acid, alcohol, amine or its oxide, and then continue the material that reaction molecular fracture final production phosphoric acid, sulfuric acid, nitric acid, carbon dioxide and water etc. are nontoxic, be easy to removing.In the present invention, nano titanium oxide and Ozone Water are by synergy degrading pesticide: UV-irradiation provides energy for optically catalytic TiO 2 effect, in the time being subject to energy and being more than or equal to the photon irradiation in titanium dioxide forbidden band (3.2eV), in titanium dioxide, be excited and transit to the conduction band electron (e that forms strong reducing property on conduction band in the electronics of rank band
-), the while produces band hole, the rank (h of a strong oxidizing property on the band of rank
+).Electronics and hole can directly be reacted with the organic matter that is adsorbed on titanium dioxide surface on the one hand, can react with hydrone and dissolved oxygen on the other hand, and OH, the O of production strong oxidizing property
2 -, concrete reaction equation is as follows:
H
2O+h
+→·OH+H
+(2)
OH
-+h
+→·OH (3)
O
2+e
-→·0
2 -+e
-(4)
And Ozone Water is in degraded agriculture when residual, except a part of ozone molecule directly reacts with agricultural chemicals, there is reduction reaction in some in water:
O
3+H
2O＝O
2+H
2O
2(5)
In the time that photocatalysis and Ozone Water exist simultaneously, can pass through again H
2o
2form OH, its reaction equation is as follows:
H
2O
2+e
-→·OH+OH
-(6)
H
2O
2+hv→2·OH (7)
O
2+hv→O
3(8)
Therefore in the time that photocatalysis and ozone exist simultaneously, between them, produce OH, the O of strong oxidizing property
2 -being the process of a circulation, is the degraded of agricultural chemicals like this, and the environment of a constant strong oxidation is provided, and can accelerate fast the degraded of agricultural chemicals, further improves degradation of pesticide efficiency.
Compare prior art, the invention has the advantages that:
1, the method for a kind of fruits and vegetables agricultural chemicals of degrading provided by the invention, in degraded pond, add nano-titanium dioxide powder and high-concentration ozone water, at alkaline environment, after photocatalysis and ozone combined degradation, remains of pesticide in fast degradation fruits and vegetables, most of organophosphor, organochlorine, carbamates, plan worm pyrethrin pesticide degradation rate in fruits and vegetables are reached more than 90%, degraded cost low, process operation is simple, consuming time short, efficiency is high, environmentally friendly, ozone also can be photocatalytic degradation oxygen is provided, and alkaline environment has improved light-catalysed efficiency simultaneously.
2, the present invention adopts ultrasonic mode to complete the mixing of ozone and titanium dioxide, and nano titanium oxide is dispersed in the aqueous solution, strengthens ultraviolet lighting area, strengthens photocatalysis; The agricultural chemicals that can accelerate fruit and vegetable surfaces enters in the aqueous solution simultaneously.The too little effect that does not reach dispersion of ultrasound intensity and set of frequency, too overflowing of ozone molecule in Ozone Water accelerated in conference, causes the waste of ozone.
3, the method for a kind of fruits and vegetables agricultural chemicals of degrading provided by the invention, the reaction of titanium dioxide and ozone is carried out in alkaline environment, and pH is preferably 11～12, on the one hand for reaction provides OH
-ion, further catches hole (h
+), prevent hole (h
+) compound with electronics, generate fast the OH of strong oxidizing property; On the other hand, most of organophosphorus pesticides, are all acid, under alkaline environment, more easily decompose.
4, the present invention adopts uviol lamp for titanium dioxide provides energy, because the ultraviolet light that optically catalytic TiO 2 is less than 400nm to wavelength has stronger absorbability, further improves the degradation rate of agricultural chemicals.
5, the present invention adopts nano-anatase mine-titanium oxide to have than the better photocatalysis performance of common rutile titanium dioxide.
6, the present invention passes into air in the process of degraded, enough oxygen is provided to degraded environment, ensures to react and can carry out fast and effectively.
7, the present invention adopts NaOH and/or Na
2cO
3as alkaline pH conditioning agent, NaOH, Na on the one hand
2cO
3alkalescence can realize more by force quick adjustment pH; On the other hand, NaOH, Na
2cO
3cost is low, can not bring heavy metal ion into, avoids the impact on Degrading experiment and reduces environmental pollution.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of degraded garden stuff pesticide residue method of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Embodiment
The material adopting in following examples and instrument are commercially available.Wherein the molecular formula of carbendazim is C
9h
9n
3o
2, the carbendazim adopting in following examples is 50% carbendazol wettable powder, belongs to carbamate chemicals for agriculture; The molecular formula of chlopyrifos is C
9h
11cl
3nO
3pS, the chlopyrifos adopting in following examples is 40% chlorpyrifos ec, belongs to organophosphorus insecticide; The molecular formula of lambda-cyhalothrin is C
23h
19clF
3nO
3, the lambda-cyhalothrin adopting in following examples is 2.5% gamma cyhalothrin microemulsion, belongs to organic chlorine agriculture chemicals; The molecular formula of Biphenthrin is C
46h
44cl
2f
6o
4, the Biphenthrin adopting in following examples is 100g/L Biphenthrin missible oil, belongs to and intends worm chrysanthemum ester class class agricultural chemicals.Above four kinds of agricultural chemicals are all purchased from Changsha pesticide market.
Embodiment 1:
Preparatory stage: carbendazim, chlopyrifos, lambda-cyhalothrin, Biphenthrin are dissolved in the water of 10L and obtain blended liquid, wherein the concentration of carbendazim, chlopyrifos, lambda-cyhalothrin, four kinds of agricultural chemicals of Biphenthrin is 10ppm.36 of the basically identical organic oranges and tangerines of selected shape size, are divided into 6 parts, and 1 portion of unsoaked oranges and tangerines as a control group, all the other 5 portions of oranges and tangerines are placed in blended liquid and are soaked completely after 15min, pull out and dry in the shade, choose immediately wherein 4 parts as experimental group, 1 part of group as a comparison.
Experimental stage:
1, mix: the Ozone Water 15L that accesses concentration and be 35mg/L from high concentrition ozone generator puts into decomposition apparatus, (particle diameter of nano titanium oxide is 30nm to add 7.5g nano titanium oxide, kind is anatase), the concentration that makes nano titanium oxide is 0.5mg/mL.
2, regulate pH: in decomposition apparatus, adding 0.1mol/LNaOH to regulate pH is 11.
3, sonic oscillation: the solution in decomposition apparatus is carried out to sonic oscillation and obtain mixed solution, ultrasonic intensity 75W/cm
2, frequency 20kHz.(mixing, regulate pH and sonic oscillation step to complete in 5min)
4, UV-irradiation: the oranges and tangerines of experimental group are put into decomposition apparatus, pass into air in mixed solution, air velocity is 120mL/min, opens ultraviolet germicidal direct projection liquid level (radiation wavelength is 254nm), degraded 30min.
Detection-phase: pull the oranges and tangerines of experimental group out, with clear water clean surface degradation solution, wait oranges and tangerines to dry in the shade.Respectively the orange peel of control group, experimental group, contrast groups is peeled, be crushed to 2～3mm, carry out analyzing and testing; Wherein carbendazim uses Ultra Performance Liquid Chromatography series connection level Four bar LC-MS instrument to detect, and method is with reference to GB/T20769-2008; Biphenthrin, chlopyrifos, cyfloxylate use gas chromatographic detection, and method is with reference to NY/T761-2008.
Analyze and draw after testing: the residual 0mg/kg of being of carbendazim, Biphenthrin, chlopyrifos, cyfloxylate in the oranges and tangerines of control group, illustrates that the oranges and tangerines of buying are without four kinds of residues of pesticides; In the oranges and tangerines of contrast groups, detect carbendazim, chlopyrifos, lambda-cyhalothrin, Biphenthrin and be respectively 3.292mg/kg, 2.059mg/kg, 0.581mg/kg, 0.332mg/kg; The carbendazim, chlopyrifos, lambda-cyhalothrin, the Biphenthrin that in the oranges and tangerines of experimental group, detect are respectively 0.261mg/kg, 0.246mg/kg, 0.076mg/kg, 0.041mg/kg, its degradation rate all reaches more than 85%, wherein the degradation rate of carbendazim is reached to 92%.
Embodiment 2:
Preparatory stage: carbendazim, chlopyrifos, lambda-cyhalothrin, Biphenthrin are dissolved in the water of 10L and obtain blended liquid, wherein the concentration of carbendazim, chlopyrifos, lambda-cyhalothrin, four kinds of agricultural chemicals of Biphenthrin is 20ppm.36 of the basically identical organic oranges and tangerines of selected shape size, are divided into 6 parts, and 1 portion of unsoaked oranges and tangerines as a control group, all the other 5 portions of oranges and tangerines are placed in blended liquid and are soaked completely after 25min, pull out and dry in the shade, choose immediately wherein 4 parts as experimental group, 1 part of group as a comparison.
Experimental stage:
1, mix: the Ozone Water 15L that accesses concentration and be 65mg/L from high concentrition ozone generator puts into decomposition apparatus, (particle diameter of nano titanium oxide is 30nm to add 12g nano titanium oxide, kind is anatase), the concentration that makes nano titanium oxide is 0.8mg/mL.
2, regulate pH: in decomposition apparatus, adding 0.1mol/LNaOH to regulate pH is 11.
3, sonic oscillation: the solution in decomposition apparatus is carried out to sonic oscillation and obtain mixed solution, ultrasonic intensity 75W/cm
2, frequency 20kHz.(mixing, regulate pH and sonic oscillation step to complete in 5min)
4, UV-irradiation: the oranges and tangerines of experimental group are put into decomposition apparatus, pass into air in mixed solution, air velocity is 120mL/min, opens ultraviolet germicidal direct projection liquid level (radiation wavelength is 254nm), degraded 45min.
Detection-phase: pull the oranges and tangerines of experimental group out, with clear water clean surface degradation solution, wait oranges and tangerines to dry in the shade.Respectively the orange peel of control group, experimental group, contrast groups is peeled, be crushed to 2～3mm, carry out analyzing and testing; Wherein carbendazim uses Ultra Performance Liquid Chromatography series connection level Four bar LC-MS instrument to detect, and method is with reference to GB/T20769-2008; Biphenthrin, chlopyrifos, cyfloxylate use gas chromatographic detection, and method is with reference to NY/T761-2008.
Analyze and draw after testing: the residual 0mg/kg of being of carbendazim, Biphenthrin, chlopyrifos, cyfloxylate in the oranges and tangerines of control group, illustrates that the oranges and tangerines of buying are without four kinds of residues of pesticides; In the oranges and tangerines of contrast groups, detect carbendazim, chlopyrifos, gamma cyhalothrin, Biphenthrin and be respectively 5.470mg/kg, 3.196mg/kg, 0.755mg/kg, 0.418mg/kg; The carbendazim, chlopyrifos, gamma cyhalothrin, the Biphenthrin that in the oranges and tangerines of experimental group, detect are respectively 0.174mg/kg, 0.146mg/kg, 0.072mg/kg, 0.028mg/kg, its degradation rate all reaches more than 90%, wherein the degradation rate of carbendazim is reached to 96.8%.
Embodiment 3:
Preparatory stage: carbendazim, chlopyrifos, lambda-cyhalothrin, Biphenthrin are dissolved in the water of 10L and obtain blended liquid, wherein the concentration of carbendazim, chlopyrifos, lambda-cyhalothrin, four kinds of agricultural chemicals of Biphenthrin is 5ppm.36 of the basically identical organic oranges and tangerines of selected shape size, are divided into 6 parts, and 1 portion of unsoaked oranges and tangerines as a control group, all the other 5 portions of oranges and tangerines are placed in blended liquid and are soaked completely after 25min, pull out and dry in the shade, choose immediately wherein 4 parts as experimental group, 1 part of group as a comparison.
Experimental stage:
1, mix: the Ozone Water 15L that accesses concentration and be 30mg/L from high concentrition ozone generator puts into decomposition apparatus, (particle diameter of nano titanium oxide is 50nm to add 3.75g nano titanium oxide, kind is anatase), the concentration that makes nano titanium oxide is 0.25mg/mL.
2, regulate pH: in decomposition apparatus, adding 0.1mol/LNaOH to regulate pH is 12.
3, sonic oscillation: the solution in decomposition apparatus is carried out to sonic oscillation and obtain mixed solution, ultrasonic intensity 40W/cm
2, frequency 40kHz.(mixing, regulate pH and sonic oscillation step to complete in 5min)
4, UV-irradiation: the oranges and tangerines of experimental group are put into decomposition apparatus, pass into air in mixed solution, air velocity is 80mL/min, opens ultraviolet germicidal direct projection liquid level (radiation wavelength is 254nm), degraded 20min.
Detection-phase: pull the oranges and tangerines of experimental group out, with clear water clean surface degradation solution, wait oranges and tangerines to dry in the shade.Respectively the orange peel of control group, experimental group, contrast groups is peeled, be crushed to 2～3mm, carry out analyzing and testing; Wherein carbendazim uses Ultra Performance Liquid Chromatography series connection level Four bar LC-MS instrument to detect, and method is with reference to GB/T20769-2008; Biphenthrin, chlopyrifos, cyfloxylate use gas chromatographic detection, and method is with reference to NY/T761-2008.
Analyze and draw after testing: the residual 0mg/kg of being of carbendazim, Biphenthrin, chlopyrifos, cyfloxylate in the oranges and tangerines of control group, illustrates that the oranges and tangerines of buying are without four kinds of residues of pesticides; In the oranges and tangerines of contrast groups, detect carbendazim, chlopyrifos, lambda-cyhalothrin, Biphenthrin and be respectively 1.690mg/kg, 1.176mg/kg, 0.158mg/kg, 0.091mg/kg; Carbendazim, chlopyrifos, lambda-cyhalothrin, the Biphenthrin in the oranges and tangerines of experimental group, measured are respectively 0.153mg/kg, 0.166mg/kg, 0.026mg/kg, 0.011mg/kg, its degradation rate all reaches more than 83%, wherein the degradation rate of carbendazim is reached to 90.9%.
Embodiment 4:
Preparatory stage: carbendazim, chlopyrifos, lambda-cyhalothrin, Biphenthrin are dissolved in the water of 30L and obtain blended liquid, wherein the concentration of carbendazim, chlopyrifos, lambda-cyhalothrin, four kinds of agricultural chemicals of Biphenthrin is 30ppm.84 of the basically identical organic oranges and tangerines of selected shape size, be divided into 14 parts, 1 portion of unsoaked oranges and tangerines as a control group, all the other 13 portions of oranges and tangerines are placed in blended liquid and are soaked completely after 20min, pull out and dry in the shade, choose immediately 12 portions of oranges and tangerines wherein as experimental group, remaining portion group as a comparison.
A. Ozone Water degraded group: 4 portions of oranges and tangerines choosing at random in experimental group are put into decomposition apparatus, add the Ozone Water 15L of 70mg/L, soaks 90min, after ozone degradation, pulls out and dries in the shade.
B. nano-TiO
2photocatalytic degradation group: add 15L to put into from the beginning decomposition apparatus, add 12g nano titanium oxide (20nm, anatase), concentration is 0.8mg/mL simultaneously, adding 0.1mol/LNaOH solution to obtain pH is 11 degradation solution, opens ultrasonic intensity 75W/cm
2frequency 20kHz, again 4 portions of oranges and tangerines choosing at random experimental group are put into decomposition apparatus, be simultaneously 120mL/min air to passing into flow velocity in degradation solution, open ultraviolet germicidal direct projection liquid level (radiation wavelength is 254nm), degraded 90min, then pulls oranges and tangerines clear water out and cleans superficial degradation liquid, dries in the shade.
C. photocatalysis and ozone combined degradation group: the Ozone Water 15L that accesses 70mg/L from high concentrition ozone generator, put into decomposition apparatus, add 12g nano titanium oxide (20nm, anatase), be that nano titanium oxide concentration is 0.8mg/mL, add 0.1mol/LNaOH solution, being adjusted to pH is 11, unlatching ultrasonic wave carries out sonic oscillation and obtains mixed solution, ultrasound intensity 75W/cm
2, frequency 20kHz (mixing, regulate pH and sonic oscillation step to complete in 5min).Again 4 parts of choosing at random immersion agricultural chemicals are put into decomposition apparatus, be simultaneously 120mL/min air to passing into flow velocity in degradation solution, open ultraviolet germicidal direct projection liquid level (radiation wavelength is 254nm), degraded 90min, after photocatalysis and ozone degradation, pull oranges and tangerines clear water clean surface degradation solution out, dry in the shade.
Respectively the orange peel of control group, experimental group, contrast groups is peeled, be crushed to 2～3mm, carry out analyzing and testing; Wherein carbendazim uses Ultra Performance Liquid Chromatography series connection level Four bar LC-MS instrument to detect, and method is with reference to GB/T20769-2008; Biphenthrin, chlopyrifos, cyfloxylate use gas chromatographic detection, and method is with reference to NY/T761-2008.Table 1 is the testing result of carbendazim in each group, chlopyrifos, lambda-cyhalothrin, Biphenthrin content.
The testing result of four kinds of pesticide concentrations of table 1
Can find out: the degradation rate of Ozone Water degraded group is 31%～37% nano-TiO from the result of table 1
2the degradation rate of photocatalytic degradation group is 58%～62%, and the degradation rate of photocatalysis and ozone combined degradation group is 95%～98%, apparently higher than Ozone Water degraded group and, nano-TiO
2photocatalytic degradation group.Meanwhile, be not a linear process in the degradation process of residues of pesticides, Pesticide Residues in Citrus amount is more, and its degradation effect is more obvious, and along with the carrying out of degraded, residual quantity is fewer, and degradation rate also slows down accordingly, at Ozone Water degraded group and nano-TiO
2photocatalytic degradation group middle peasant residual is all very high, and ozone and light-catalysed combined degradation, the residual rate of its agricultural chemicals obviously reduces, and therefore, photocatalysis and ozone combined degradation group are not the simple superposition of ozone group and photocatalysis group effect.
In embodiment 1 to 4, pH adjusting agent is not limited in NaOH, can also be Na
2cO
3solution or other alkaline pH conditioning agents.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, to those skilled in the art, the present invention can have various modifications and variations.Within every the spirit and principles in the present invention, any amendment of doing, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Claims (8)
1. the degrade method of garden stuff pesticide residue, is characterized in that, comprises the following steps:
S1: by nano-TiO
2mix with Ozone Water, regulating pH by pH adjusting agent is 11～12;
S2: then carry out sonic oscillation and obtain mixed solution;
S3: fruits and vegetables are put into described mixed solution, pass into air in described mixed solution, with ultra violet lamp 20min～90min, complete fruits and vegetables degradation of pesticide.
2. the method for degraded garden stuff pesticide residue according to claim 1, is characterized in that, nano-TiO described in described S1 step
2concentration be 0.25mg/mL～0.8mg/mL.
3. the method for degraded garden stuff pesticide residue according to claim 1, is characterized in that, consistency of ozone water 30mg/L～70mg/L described in described S1 step.
4. the method for degraded garden stuff pesticide residue according to claim 1, is characterized in that, nano-TiO in described S1 step
2for the powder of diameter 20～50nm.
5. the method for degraded garden stuff pesticide residue according to claim 1, is characterized in that, nano-TiO in described S1 step
2for anatase.
6. according to the method for the degraded garden stuff pesticide residue described in any one in claim 1 to 5, it is characterized in that, described in described S1 step, pH adjusting agent is Na
2cO
3solution or NaOH solution.
7. according to the method for the degraded garden stuff pesticide residue described in any one in claim 1 to 5, it is characterized in that, described in described S2 step, the intensity of sonic oscillation is 40W/cm
2～75W/cm
2, frequency is 20kHz～40kHz.
8. according to the method for the degraded garden stuff pesticide residue described in any one in claim 1 to 5, it is characterized in that, the flow velocity that passes into air to described alkaline mixed solution in described S3 step is 80～120mL/min.
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| CN104496005A (en) * | 2014-12-30 | 2015-04-08 | 河海大学常州校区 | Degradation method of degrading acephate by virtue of cooperation of ultrasonic wave and ozone |
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| CN107670218A (en) * | 2017-08-24 | 2018-02-09 | 江苏金纳多生物科技有限公司 | A kind of method of ultraviolet assisted photo-catalysis degraded ginkgo leaf Pesticide Residues |
| CN108112861A (en) * | 2016-11-30 | 2018-06-05 | 株式会社东芝 | Food storage storehouse |
| CN108160081A (en) * | 2017-12-29 | 2018-06-15 | 郝峻 | A kind of ZnFe2O4/TiO2Fruit and vegetable residual pesticide scavenger and preparation method thereof |
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| CN105995391A (en) * | 2016-05-23 | 2016-10-12 | 南昌大学 | Method using ultrasonic cleaning to eliminate pyrethriods pesticide residues in Chinese cabbages |
| CN108112861A (en) * | 2016-11-30 | 2018-06-05 | 株式会社东芝 | Food storage storehouse |
| CN107670218A (en) * | 2017-08-24 | 2018-02-09 | 江苏金纳多生物科技有限公司 | A kind of method of ultraviolet assisted photo-catalysis degraded ginkgo leaf Pesticide Residues |
| CN108160081A (en) * | 2017-12-29 | 2018-06-15 | 郝峻 | A kind of ZnFe2O4/TiO2Fruit and vegetable residual pesticide scavenger and preparation method thereof |
| CN109699867A (en) * | 2019-01-08 | 2019-05-03 | 华中农业大学 | A kind of method of patulin in degradation fruit juice |
| CN113016985A (en) * | 2021-04-19 | 2021-06-25 | 湖南省农产品加工研究所 | Automatic degradation method for residual pesticide on fruits and vegetables |
| CN113016985B (en) * | 2021-04-19 | 2022-05-13 | 湖南省农产品加工研究所 | Automatic degradation method for residual pesticide on fruits and vegetables |
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