114 results about "Chlorophenol" patented technology

The invention discloses an application of an electronic waste pollution human body exposure fingerprint spectrum in exposure risk prediction, and the human body exposure fingerprint spectrum is composed of more than three of exposure markers of 2, 4, 6-tribromophenol, 2, 4, 5-trichlorophenol, 4-bromophenol, 1-hydroxypyrene and bisphenol A. The invention further discloses an application of the electronic waste pollution human body exposure fingerprint spectrum in exposure risk prediction. According to the method, a systematic method of urine pollutant exposure omics is adopted for the first time, comprehensive screening and characterization of pollutant exposure markers related to specific components and by-products are achieved in electronic waste exposure worker groups, and the method is the most systematic organic pollutant exposure research known in the field at present.

The invention discloses a method for detecting the content of chlorophenol substances in a bamboo material and a product for food contact, and belongs to the technical field of detection. The method specifically comprises the steps of standard liquid preparation, sample treatment and sample testing. According to the method, a content and migration quantity pretreatment mode without derivatization treatment is adopted, and an ultra-high performance liquid chromatography-tandem mass spectrometry detection technology is matched, so that the method for testing the content of the chlorophenol substances in the bamboo and wood materials and products for food contact, which is simple in pretreatment process, accurate in test, efficient, rapid, high in sensitivity and high in practicability, is realized.

The invention belongs to the field of water pollution treatment, and particularly relates to a method for degrading chlorophenol organic pollutants in water by activating persulfate with a cobalt-cerium dioxide monatomic catalyst in the presence of bicarbonate radicals. According to the invention, cerium nitrate hexahydrate is calcined in a muffle furnace to obtain cerium dioxide. A catalyst precursor is prepared by a traditional isovolumetric impregnation method. The prepared catalyst precursor is annealed at different temperatures to obtain a series of catalysts, the catalytic performance of Co1-CeO2-700 is optimal, and the Co1-CeO2-700 has more excellent catalytic performance in the presence of bicarbonate radicals. The preparation method provided by the invention has the advantages of simple steps, convenience in operation, quick effect of treating chlorophenol, high product yield and low cost, and has good economic value and social benefit. The prepared monatomic catalyst has the advantages of being high in atom utilization rate, good in stability, excellent in catalytic effect and the like, and is expected to become a key technology for solving actual water environment organic pollution.

The invention relates to an electroactive microbial system for removing parachlorophenol and a method thereof, and aims to provide an electroactive microbial strain for reducing Fe < 0 > oxidized under the condition of oxygen, generating active Fe < 2 + > and further removing parachlorophenol, so that the defect that Fe < 0 > is easy to passivate when organic pollutants are treated is overcome. In addition, an allogenic material is also introduced, so that the degradation efficiency of the electroactive microorganism enhanced zero-valent iron aeration system on 4-CP is improved; the operation is simple, the cost is low, and meanwhile, the pollution to the environment is avoided; according to the technical scheme, the electroactive microbial system for removing parachlorophenol comprises the following components: 0.08 g / L to 0.60 g / L of zero-valent iron, 0.5 mmol / L to 5.0 mmol / L of allogenic substances and 5 g / L to 40 g / L of electroactive microbial strains, the electroactive microbial strains are shewanella decolorata S12 and shewanella putrefaciens SP200, and the electroactive microbial strains are prepared from the shewanella decolorata S12; the microbial inoculum is at least one of shewanella sp. MR-1 and sulfur reduction geobacter PCA; belongs to the field of environmental microorganisms.

The application discloses a kind of molecular imprinting cerium oxide / biochar composite material and its preparation method and application, comprising: cerium oxide / biochar composite material and solvent are mixed, ultrasonic, obtain first solution;At room temperature, first solution and imprinting polymer are mixed, stirring, obtain first mixture, imprinting polymer is the mixture of template molecule and functional monomer, template molecule is p-chlorophenol, and functional monomer is methyl methacrylic acid;First mixture is purged with N2, under sealed, ultraviolet light radiation polymerization 12-24h, obtain second mixture, second mixture is centrifuged, washes to detect no template molecule, clean, dry, obtain molecular imprinting cerium oxide / biochar composite material.Molecular imprinting cerium oxide / biochar composite material as catalyst in the application of photocatalytic removal of p-chlorophenol in water body shows higher specific selectivity and catalytic activity, and the removal efficiency of p-chlorophenol reaches 90%, with good anti-interference in complex water environment.

The invention relates to a preparation method of a trace Fe optimized Ru nano-catalyst and application of the trace Fe optimized Ru nano-catalyst in hydrodechlorination reaction of parachlorophenol. The preparation method comprises the following specific steps: firstly, dissolving ruthenium chloride hydrate and ferric trichloride into ethylene glycol, adding PVP (Polyvinyl Pyrrolidone) into the solution, fully mixing, adjusting the pH value of the solution to 3-4, transferring into a glass bottle, and heating and reacting in an oil bath pan at 180 DEG C; and centrifuging, washing and drying the obtained product to obtain a black powdery solid, namely the Ru-Fe nano-catalyst. The hydrodechlorination process is carried out in a double-chamber electrolytic tank separated by a Nafion 117 membrane, an electrolyte is a Na2SO4 solution, a Ru-Fe electrode taking carbon cloth as a carrier is used as a working electrode, a Pt sheet is used as a counter electrode, and an Ag / AgCl electrode is used as a reference electrode. The Ru-Fe nano-catalyst provided by the invention has the advantages of stable structure, uniform metal distribution and excellent electron synergistic effect, and can efficiently catalyze hydrodechlorination of p-chlorophenol and generate cyclohexanol. The preparation process is simple, convenient and environment-friendly, has a good industrial application prospect, and is particularly suitable for green treatment and resource conversion of chlorine-containing organic wastewater.

The present application relates to a kind of high efficiency energy-saving preparation process of phloroglucinol.The preparation process uses phenol as raw material, generates 2,6-dichlorophenol and dichlorophenol isomer through chlorination reaction, then is alkaline hydrolysis and acidification into product phloroglucinol, after the intermediate dichlorophenol is generated in the chlorination reaction of raw material phenol, it is not concentrated and separated, directly add base to carry out alkaline hydrolysis reaction, realize chlorination-alkaline hydrolysis two-step reaction continuous production.The present application uses alkaline hydrolysis reaction to also convert the original dichlorophenol isomer impurity in situ into product phloroglucinol, realizes waste to treasure, improves yield about 8-10%;In the preparation process, 2,6-dichlorophenol intermediate is not separated, it is directly used in the next step alkaline hydrolysis reaction, the operation unit such as the solvent, crystallization, centrifugation, drying, packaging etc. for its concentration replacement is saved, at the same time, the pungent odor generated in the large production process of 2,6-dichlorophenol is fundamentally avoided, and the environmental pollution problem in the production process of phloroglucinol is avoided.

The application discloses a kind of iron monatomic catalysts with controllable sulfur content and coordination mode and its preparation method and application, nitrogen-allyl thiourea and thiocyanic acid are respectively used as sulfur-containing organic ligand and sulfur-containing supramolecular precursor, chelate with iron ion, and use the hydrogen bond interaction between melamine and cyanuric acid, complete supramolecular self-assembly process;And high-temperature pyrolysis is carried out under argon atmosphere, and iron monatomic catalysts with controllable sulfur content and coordination mode can be prepared.The application also includes the application of iron monatomic catalysts with controllable sulfur content and coordination mode in removing organic pollutants such as p-chlorophenol and antibiotics in water.Iron monatomic catalysts with controllable sulfur content and coordination mode can improve the activation efficiency of persulfate, the content and selectivity of active oxygen species generated, and achieve efficient degradation of p-chlorophenol under different anion-cation, humic acid and pH conditions, while having good recycling performance.

The invention discloses a method for reducing chlorophenol by coupling micron-sized zero-valent iron with dechlorination microorganisms, which is characterized in that micron-sized zero-valent iron is added into a system for reducing chlorophenol by dechlorination microorganisms to synergistically degrade chlorophenol compounds, and the particle size of the micron-sized zero-valent iron is greater than or equal to 1 mu m. According to the method disclosed by the invention, by constructing the reduction system of the micron-sized zero-valent iron coupled dechlorination microorganisms, the chlorophenol compounds can be efficiently reduced by utilizing the synergistic promotion effect of the micron-sized zero-valent iron coupled dechlorination microorganisms, so that not only can the efficient removal of polychlorophenols be realized, but also the proportion of low-toxicity products in the reduction system can be remarkably increased; the method has the advantages of simple process, convenience in operation, low cost, high treatment efficiency, high proportion of low-toxicity chlorophenol in a reduction product, environmental friendliness and the like, is suitable for degrading chlorophenol compounds in wastewater, and has high use value, good application prospect and wide application prospect. The method is of great significance in effectively reducing the overall toxicity of the chlorophenol pollutants and effectively reducing the harm of the chlorophenol pollutants to the environment and human beings.

This invention discloses the application of human exposure fingerprinting of electronic waste pollution in exposure risk prediction. The human exposure fingerprinting consists of three or more of the following exposure markers: 2,4,6-tribromophenol, 2,4,5-trichlorophenol, 4-bromophenol, 1-hydroxypyrene, and bisphenol A. This invention is the first to employ the systematic method of urinary contaminant exposure profiling to achieve comprehensive screening and characterization of contaminant exposure markers related to specific components and byproducts in workers exposed to electronic waste. This is currently the most systematic organic contaminant exposure study known in this field.

The invention discloses a preparation method and application of an electrode of bioelectrochemical equipment. The method comprises the following steps: S1, pretreatment; s2, preparing a polyvinyl alcohol solution; s3, preparing electrode slurry; s4, coating is carried out; and S5, drying. The electrode is used for treating chlorophenol wastewater. The electrode provided by the invention is prepared by modifying zero-valent iron, is arranged in an anode region of a bioelectrochemical reactor, and can effectively regulate and control oxidation-reduction potential, strengthen electron transfer between iron reducing bacteria and acetogenic bacteria at an anode and enrich acetogenic flora by loading trace zero-valent iron, so that the yield of acetic acid in an acidogenic phase is increased; the synchronous pollutant removal and methane yield increase are realized, and the economic benefit is improved.

The application discloses application of a pre-oxidized zero-valent iron / peroxyacetic acid system in removal of chlorophenol organic pollutants, and specifically comprises the following operation process: adding the peroxyacetic acid as an oxidant in an organic pollutant solution containing the chlorophenol, adjusting pH, and adding the pre-oxidized zero-valent iron to activate the peroxyacetic acid to generate hydroxyl radicals and high-valence iron to remove the chlorophenol organic pollutants; and the pre-oxidized zero-valent iron is prepared by mixing and grinding the zero-valent iron and peroxydisulfate. The pre-oxidized zero-valent iron is used for activating the peroxyacetic acid to remove the chlorophenol organic pollutants, and has higher reaction activity and longer service life compared with the heterogeneous zero-valent iron.

The invention relates to the field of macromolecules, and discloses a method for refining polyetherketoneketone and a polyetherketoneketone refined product. The method comprises the following steps: (1) treating a polyetherketoneketone complex by adopting a pretreatment agent; (2) the polyether ketone ketone crude product and a mixed chain supporting solution are mixed and washed, a first product is obtained, the mixed chain supporting solution comprises a main chain supporting agent and a cosolvent, the main chain supporting agent comprises one or more selected from parachlorophenol, trifluoroacetic acid, difluoroacetic acid, dichloroacetic acid and chloroacetic acid, the cosolvent comprises one or more selected from N, N-dimethylformamide and dimethyl sulfoxide, and the main chain supporting agent comprises one or more selected from dichlorophenol, trifluoroacetic acid, difluoroacetic acid, dichloroacetic acid and chloroacetic acid. The solvent is one or more of water, N-methyl pyrrolidone and N-methyl formamide; (3) adding a mixed aqueous solution into the first product to remove at least part of metal ions to obtain a second product; and (4) washing the second product for multiple times by using an organic solvent, and washing and drying to obtain the refined polyether ketone ketone. The content of aluminum ions in the polyetherketoneketone prepared by the method is low.

The invention discloses a method for treating polychlorinated nitrobenzene-containing wastewater by adopting calcium hydroxide alkaline hydrolysis. The method comprises the following steps: firstly, adding calcium hydroxide into wastewater containing polychlorinated nitrobenzene, carrying out hydrolysis reaction under stirring and temperature control conditions, carrying out nucleophilic substitution on activated chlorine substitution sites and nitro substitution sites in polychlorinated nitrobenzene molecules by utilizing hydroxyl ions to generate phenolic substances such as trinitrodichlorophenol and the like, and separating the phenolic substances to obtain the polychlorinated nitrobenzene-containing wastewater. Performing ultrasonic treatment on the first treatment liquid until the solution turns yellow and the chromaticity is not increased any more to obtain a first treatment liquid, and performing ultrasonic treatment, washing and filtering on the first treatment liquid to remove precipitated solids to obtain the treatment liquid. According to the method disclosed by the invention, the primary attenuation of the polychlorinated nitrobenzene-containing wastewater is realized, and the treatability of the wastewater is improved.

This utility model discloses an apparatus for preparing 2,4,4'-trichloro-2'-nitrodiphenyl ether, relating to the technical field of 2,4,4'-trichloro-2'-nitrodiphenyl ether production apparatus. The inlet of the reaction vessel is connected via pipelines to a 2,4-dichlorophenol tank, a 2-nitro-4-chlorophenol tank, a sodium hydroxide tank, and an N,N-dimethylformamide tank. The outlet of the reaction vessel is connected via pipelines to an extraction tank. The inlet of the extraction tank is connected via pipelines to a deionized water tank and an ethyl acetate tank. The outlet of the extraction tank is connected via pipelines to an organic phase tank. The outlet of the organic phase tank is connected via pipelines to a drying tank. The inlet of the drying tank is connected via pipelines to an anhydrous sodium sulfate tank. The outlet of the drying tank is connected via pipelines to a vacuum distillation tank. The bottom outlet of the vacuum distillation tank is connected via pipelines to a product tank. The process is simple, and the product yield and purity are high.

The invention relates to the technical field of organic synthesis, in particular to an efficient catalytic synthesis method of chlorphenesin, which comprises the following steps: dissolving ZIF-8 powder in absolute methanol for ultrasonic treatment, then adding ferric chloride ionic liquid for stirring and centrifuging, and then washing and drying solids obtained by centrifuging to obtain a ZIF-8 / ZIF-8 composite material; the composite catalyst is obtained; the preparation method comprises the following steps: adding parachlorophenol and a composite catalyst into isopropanol, mixing, heating and activating, then adding glycidol and a sodium hydroxide solution, carrying out heating reaction, filtering after the reaction is finished, and collecting filtrate; adding deionized water into the filtrate, stirring, standing for layering, discarding a lower-layer water phase to obtain an organic phase, carrying out reduced pressure distillation on the organic phase to recover isopropanol, and recrystallizing and drying a residual crude product to obtain chlorphenesin. The novel composite catalyst is adopted, and the product purity can reach 99% or above.

The application provides a kind of poly (methyl methacrylate) and polyethylene glycol blend asymmetric nanofiltration membrane and application, the poly (methyl methacrylate) and polyethylene glycol blend asymmetric nanofiltration membrane, poly (methyl methacrylate) (PMMA) and polyethylene glycol (PEG) two polymers are stirred and dissolved in N, N-dimethylformamide solvent to form casting solution, the nanofiltration membrane of specific thickness is prepared by doctor blade, then, the prepared nanofiltration membrane is placed in fume hood and stands, based on the different solvent evaporation rates of upper layer and bottom of nanofiltration membrane, form a blend asymmetric nanofiltration membrane with dense structure, immerse the blend asymmetric nanofiltration membrane in deionized water, remove the solvent by phase transfer method, and then solidify the membrane; in the process of membrane preparation, poly (methyl methacrylate) is the main support material, polyethylene glycol is the pore former and hydrophilic material, and the membrane realizes efficient separation and removal of neutral chlorophenol disinfection by-products with molecular weight ≤200 in water.

The present application relates to a hybridoma cell strain secreting benzyl chlorophenol monoclonal antibody and its application, and belongs to the technical field of immune detection. The present application synthesizes benzyl chlorophenol hapten, prepares benzyl chlorophenol complete antigen, and through the steps of mouse immune response and cell fusion, a hybridoma cell strain secreting benzyl chlorophenol monoclonal antibody is screened and named CBP-3D4, which is preserved in the China General Microbiological Culture Collection Center with a preservation number of CGMCC NO.46222. The monoclonal antibody secreted by the hybridoma cell strain has good sensitivity and specificity, the IC 50 value of the monoclonal antibody secreted by the hybridoma cell strain for benzyl chlorophenol is 97.741 ng / mL, the cross reactivity of the monoclonal antibody for various benzyl chlorophenol functional analogs is less than 1%, and the monoclonal antibody can be applied to the preparation of benzyl chlorophenol detection products to realize the rapid quantification of benzyl chlorophenol.

The invention discloses an N and P co-doped charcoal-silicon dioxide composite material and application thereof in adsorbing phenols in oilfield wastewater, and belongs to the technical field of environmental functional materials. The composite material comprises a biochar matrix, silicon dioxide, and an N element and a P element which are co-doped on the surface of the material and in a skeleton. Silicon dioxide serves as a framework, the high-porosity structure of the material is supported and maintained, the thermal stability of the material is improved, rich surface active sites are introduced through co-doping of N and P, and the adsorption capacity of the material to phenolic pollutants is remarkably improved through the synergistic effect of the silicon dioxide and the N and P. The adsorption capacity of the material to typical oilfield phenols such as phenol, cresol, chlorophenol, nitrophenol and the like is 150-200 mg / g, the adsorption efficiency can reach 96% or above, and the recycling performance can be good through acid and alkali heat treatment. The invention effectively solves the problems of poor adsorption effect, high material cost, insufficient stability, secondary pollution and the like in oilfield wastewater phenol treatment.

The present invention discloses a dual-photoelectrode system and a method for photoelectrocatalytic degradation of organic pollutants thereof. TiO2NNs / Ti mesh is used as a photoanode and NCDs / Co3O4 / Ti mesh is used as a photocathode. A light-responsive dual-photoelectrode system (TiO2NNs-NCDs / Co3O4) is constructed to perform photoelectrocatalytic treatment on polluted water, thereby achieving high-efficiency and low-consumption photoelectrocatalytic oxidation degradation of pollutants such as sulfadiazine (98.54%), sulfadimethazine (98.17%), rhodamine B (99.03%), sulfathiazole (99.70%), 2,4-dichlorophenol (93.40%), and phenol (93.96%). Compared to existing technologies, the dual-photoelectrode system of the present invention features a new cathode material, NCDs / Co₃O₄, which is responsive to visible light, instead of the Pt sheet commonly used in traditional photoelectrocatalytic systems. This system leverages solar energy to generate a higher photovoltage between the photoanode and photocathode, enabling self-driven operation or low-power input operation. This reduces overall system energy consumption while further improving system efficiency and stability. The present invention boasts excellent light absorption performance and removal efficiency for difficult-to-degrade organic pollutants, along with good stability, long lifespan, and low energy consumption and cost, offering broad application prospects.

This application relates to the field of materials technology, providing a chitosan-polyacrylonitrile composite material, its preparation method, and its application. The general structural formula of the chitosan-polyacrylonitrile composite material is as follows: This application uses inexpensive chitosan and polyacrylonitrile fiber as raw materials to develop a novel chitosan-polyacrylonitrile composite material, overcoming the solubility limitation of chitosan under acidic conditions and simultaneously enhancing its adsorption capacity for phenolic compounds and heavy metals. It exhibits higher selectivity for target pollutants, especially among eight different phenolic compounds (phenol, 4-methylphenol, 4-chlorophenol, 4-nitrophenol, hydroquinone, catechol, resorcinol, and phloroglucinol), showing excellent adsorption performance for hydroquinone, with an adsorption capacity as high as 316.84 mg·g⁻¹. ‑1 Furthermore, this application addresses the soft metal ion Hg. 2+ Its adsorption capacity is outstanding, with a maximum adsorption capacity of 237.18 mg·g⁻¹. ‑1 .

The invention discloses a preparation method and application of a carbon-based nanoscale zero-valent iron material capable of being used for microwave activation and degradation of organic pollutants, and relates to the technical field of carbon-based nanoscale zero-valent iron preparation. The invention aims to solve the problems that a traditional carbon-based metal organic framework is unstable, and incompletely decomposed toxic by-products are released into water in an adsorption process, so that secondary organic pollution is caused. The method comprises the following steps: adding nitrogen-doped biochar into a ferric chloride solution, uniformly stirring in a nitrogen atmosphere, adding a sodium borohydride aqueous solution, fully stirring, filtering, washing in the nitrogen atmosphere, and finally drying by a freeze dryer to obtain the carbon-based nano zero-valent iron material for degrading organic pollutants under microwave activation. The organic pollutants comprise but are not limited to sulfamethoxazole, bisphenol A, 4-chlorophenol and trichlorophenol. The invention can obtain the preparation method and the application of the carbon-based nano zero-valent iron material capable of being used for microwave activation and degradation of organic pollutants.

The invention discloses a desorption regeneration method of chlorinated phenol adsorption resin, which comprises the following steps: adsorbing 2, 4-dichlorophenol by using macroporous adsorption resin to obtain a byproduct 5-crude hydrochloric acid, then respectively carrying out desorption regeneration by using a first regenerant and a second regenerant, washing the obtained resin with water, and recycling to adsorb impurities in the crude hydrochloric acid. And the first regenerant and the second regenerant can be uniformly collected, separated and recycled. According to the method, methylbenzene and alcohol substances are respectively used as regenerant, efficient desorption and regeneration of the macroporous adsorption resin containing impurities such as chlorophenol are realized, and the method is simple, low in cost and capable of meeting environmental protection requirements.

The invention belongs to the field of medicine synthesis, and particularly relates to a preparation method of Remetirom (Remetirom). The preparation method comprises the following steps: reacting 2, 3, 6-dichloropyridazine, isobutyric acid, a catalyst, acid and a free radical initiator in a solvent to obtain an intermediate I; reacting the intermediate I with 4-amino-2, 6-dichlorophenol under the conditions of inert gas protection, catalyst and alkalinity to obtain an intermediate II; reacting the intermediate II with nitrous acid ester and N-cyanoacetyl ethyl carbamate under an acidic condition to obtain an intermediate III; and the intermediate III is subjected to a one-pot self-reaction in a carboxylate-carboxylic acid solvent to obtain the remetirol. The method provided by the invention has the advantages of short steps, low cost, mild reaction conditions, high total yield, suitability for industrial production and the like.

The invention provides a method for resource utilization of 2, 4-dichlorophenol rectification residual liquid, and belongs to the technical field of chemical production waste treatment. According to the method, the 2, 4-dichlorophenol rectification residual liquid is used as a raw material, and the 2, 4, 6-trichlorophenol component and the phenyl sulfide catalyst are effectively separated from the 2, 4-dichlorophenol rectification residual liquid through sectional distillation operation and optimization of distillation conditions, the cyclic utilization proportion of the phenyl sulfide catalyst and the use amount of a Lewis acid catalyst, so that the 2, 4, 6-trichlorophenol and the phenyl sulfide catalyst are effectively separated from the 2, 4-dichlorophenol rectification residual liquid. According to the method, the content of 2, 4-dichlorophenol in the chlorinated liquid obtained by efficiently recycling the 2, 4, 6-trichlorophenol component and recycling the polyphenylene sulfide catalyst is greater than 96%. According to the method, the production efficiency is improved, the 2, 4-dichlorophenol rectification residual liquid needing to be treated is reduced, and the production cost is remarkably reduced; the method is simple to operate and easy to implement, avoids complex operation steps in an existing recovery method, effectively solves the problems of high cost and poor adaptability of a traditional process, and provides powerful support for large-scale industrial production and application.

The invention discloses a method for detecting the migration quantity of chlorophenol-containing substances in a bamboo material and a product for food contact, and belongs to the technical field of detection. The method specifically comprises the following steps: 1) preparing a standard solution; 2) sample treatment; and 3) sample testing. According to the method, the sample is subjected to migration test by adopting the water-based simulant, the soaking solution can be directly analyzed on a machine without treatment, derivatization treatment is not needed, and the pretreatment process is simple. According to the invention, the ultra-high performance liquid chromatography-tandem mass spectrometry analysis technology is adopted to analyze the to-be-detected substance, and the detection sensitivity and speed are significantly improved. The combination of the migration treatment technology and the ultra-high performance liquid chromatography-tandem mass spectrometry technology reduces the detection steps, greatly reduces the loss of the target object, and improves the accuracy of the detection result.

The invention provides a method for determining the residual quantity of chlorine-containing phenol in a wood product for food contact by adopting an automatic vortex-promoted derivatization-gas chromatography-mass spectrometry method, which comprises the following steps of: 1, firstly extracting a sample, 2, derivatizing the sample, 3, analyzing the re-determined sample, 4, determining the residual quantity of chlorine-containing phenol in the wood product for food contact by adopting an automatic vortex-promoted derivatization-gas chromatography-mass spectrometry method. And 5, adding target objects with different levels and contents into a blank matrix, then carrying out a recovery test, repeating the test for three times at each labeling level, carrying out quantitative analysis through an internal standard method, and calculating the average recovery rate. The method provided by the invention can meet the requirements of limited quantification of 19 kinds of chlorophenols, and is suitable for rapid detection and risk monitoring of the residual quantity of 19 kinds of chlorophenols in food-related wooden products.

The invention discloses a continuous synthesis method of p-tert-butoxychlorobenzene, and belongs to the technical field of organic synthesis. The method comprises the following steps: continuously pumping a parachlorophenol solution and an isobutene solution into a tower reactor for reaction, and continuously feeding a reaction solution into an extraction tower for separation and purification. According to the invention, the tower reactor is combined with continuous extraction, so that the whole process from reaction to post-treatment is continuous, and the production efficiency is greatly improved; according to the method, efficient reaction can be realized under mild conditions, the process control is stable, side reaction is effectively inhibited, and the product yield is high; meanwhile, equipment is safe and reliable, the comprehensive production cost is remarkably reduced, and the method is suitable for industrial large-scale application.

The utility model discloses a chlorophenol organic pollutant treatment device based on photocatalysis, and relates to the technical field of organic pollutant treatment. The device comprises a treatment barrel, a top cover is fixedly arranged at the center of the top of the treatment barrel, a stirring assembly is arranged in the treatment barrel, a medicine storage assembly is arranged on the side face of the treatment barrel, a medicine injection assembly is arranged at the top of the medicine storage assembly, and a plurality of catalyst storage assemblies and ultraviolet lamps which are distributed at intervals are installed in the treatment barrel; the medicine storage assembly comprises a mounting frame fixedly arranged on the outer side of the treatment barrel, a medicine storage barrel is placed in the mounting frame, a medicine outlet pipe with the top penetrating through the medicine storage barrel is fixedly arranged in the medicine storage barrel, a first one-way valve is fixedly arranged at the top of the medicine outlet pipe, and a medicine injection pipe is communicated between an output port of the first one-way valve and the treatment barrel. According to the utility model, the pH adjusting liquid in the medicine storage barrel is quantitatively squeezed into the treatment barrel through the medicine outlet pipe and the medicine injection pipe, so that the pH value of the liquid to be treated in the treatment barrel is adjusted, and the decomposition rate of chlorophenol organic pollutants is improved.

The invention provides a method for determining residual chlorocresol biocide in a textile, which comprises the following steps of: extracting the chlorocresol biocide in the textile to be detected by adopting ultrasonic extraction, and then rapidly determining the chlorocresol biocide by adopting high performance liquid chromatography, the chlorocresol biological killing agent is prepared from 4-chloro-3-methylphenol, 2-benzyl-4-chlorophenol, 4-chloro-3, 5-dimethylphenol and 4-chloro-2-[(5-chloro-2-hydroxyphenyl) methyl] phenol, and the chlorocresol biological killing agent is prepared from 4-chloro-3-methylphenol, 2-benzyl-4-chlorophenol, 4-chloro-3, 5-dimethylphenol and 4-chloro-2-[(5-chloro-2-hydroxyphenyl) methyl] phenol; a mobile phase of the high performance liquid chromatography is composed of a mobile phase A and a mobile phase B, the mobile phase A is an aqueous solution containing 0.01-0.30 mol / L of ammonium acetate, and the mobile phase B is methanol. The method is convenient to operate, and can accurately detect the residues of four chlorocresol biocides, namely PCMC, BCP, PCMX and DDDM, in the textile at the same time.