62 results about "Polybrominated diphenyl ethers" patented technology

The invention discloses a Lysinibacillus sp. GY32 and the application thereof. The Lysinibacillus sp. GY32 is collected in the CCTCC (China Center for Type Culture Collection) on September 7, 2011, address: Wuhan University, Wuhan, China, and the collection number is CCTCC NO: M 2011307. The invention provides a new breed: Lysinibacillus sp. GY32, capable of degrading PolyBrominated Diphenyl Ethers BDE209, so that the degrading bacteria for managing the PolyBrominated Diphenyl Ethers BDE209 are provided.

The invention discloses a preparation method of a nano Ni/Fe-biochar composite material and application of the nano Ni/Fe-biochar composite material in in-situ restoration of polybrominated diphenyl ether polluted soil. The preparation method comprises the following steps: dissolving iron salt or ferrous salt and polyvinylpyrrolidone in an ethanol water solution, uniformly mixing, adding biochar particles, and uniformly mixing to obtain a solution A; adding a reducer-containing ethanol water solution into the solution A, stirring to react completely, separating out the reaction product, washing, and adding into an ethanol water solution to obtain a solution B; and dropwisely adding a nickel-salt-containing ethanol water solution into the solution B, stirring to react completely, separating out the product material, washing, and drying to obtain the nano Ni/Fe-biochar composite material. The nano Ni/Fe bimetal particles are carried on the biochar, thereby further enhancing the flowability of the nanoparticles. The nano Ni/Fe-biochar composite material is beneficial to soil in-situ restoration due to the stability and dispersity. The nano Ni/Fe-biochar composite material can be used for restoring high-concentration PBDEs polluted soil, and has high restoration efficiency.

The invention relates to a trivalent chromium natural colour passivation solution for processing an aluminium alloy, comprising the following components by contents: 1-2 g/L of chromic salt, 0.05-0.1 g/L of zirconium salt, 0.01-0.03 g/L of nickel sulfate NiSO4.6H2O, 0.4-0.8 g/L of film-forming agents, 0.4-0.6 g/L of trisodium citrate Na3C6H5O7.2H2O, and the balance of water. The trivalent chromium natural colour passivation solution does not contain harmful substances, i.e. hexavalent chromium, lead, mercury, cadmium, polybrominated diphenyl ethers, polybrominated biphenyl, and the like, can be recycled, realize the clean production, passivate at normal temperature and save the energy; in addition, the aluminium alloy processed by the trivalent chromium natural-colour passivation solution has white and bright surface colour and lustre, colour approximate to the natural colour of the aluminium alloy and film neutral salt spray corrosion property meeting the national standard and can realize the substitution of the trivalent chromium passivation solution for a hexavalent chromium passivation solution.

The invention relates to polybrominated diphenyl ether and a synthesizing method thereof. The polybrominated diphenyl ether has a general formula shown in the specification of the invention, wherein the substituting groups corresponding to R1, R2, R3 and R4 are R1 R2 R3 R4H Br Br BrBr H Br BrBr Br H BrBr Br Br HBr Br Br Br. The invention makes reasonable utilization of the positioning bromination ability of amino and the property of easily being substituted by bromine atom or hydrogen atom, provides possibility for synthesizing various high bromine OH/MeO-PBDEs, and can provide sample support for detecting metabolite of high bromine OH/MeO-PBDEs of bromine 7-9 in the environment.

The invention relates to a method for rapidly degrading polybrominated diphenyl ether by nano Pd/C catalyst, comprising the steps of: adjusting the pH value of organic series containing decabromodiphenyl oxide to be 10-11, adding the nano Pd/C catalyst, reacting for more than 4h, and controlling the reaction temperature to be 50+/-5DEG C, wherein the nano Pd/C is solid particles with Pd loaded on activated carbon; the Pd has the mass percent of 5.0+/-0.05%, and the nano Pd/C has the concentration of 6-20mg/ml in the organic series; the organic series is alcoholic solution of fatty hydrocarbon or aromatic hydrocarbon, wherein the fatty hydrocarbon is normal hexane, and the aromatic hydrocarbon is waste TV shell pyrolysis oil with the main components of methylbenzene or styrene; and as having large specific surface, the nano Pd/C can rapidly aborb and degrade the polybrominated diphenyl ether, and greatly reduces the degradation time compared with nano reducing metal powder. After being used, the nano Pd/C powder can be repeatedly used by being washed by alcohol and water.

The invention discloses a preparation method of a charcoal load type nanometer ferro-nickel composite material and application thereof for removing poly brominated diphenyl ethers in water. The method comprises the steps that ferric salt or ferrite is dissolved into an ethanol water solution and mixed to be uniform, then, charcoal particles are added, stirred and mixed to be uniform, and a solution A is obtained; an ethanol water solution containing a reducing agent is added into the solution A, after the stirring reaction is complete, a reaction product is separated out, after cleaning is thorough, the product is added into the ethanol water solution, and a solution B is obtained; an ethanol water solution containing nickel salt is dropped into a solution B, after the stirring reaction is completed, a product material is separated out, washing and drying are performed, and then the charcoal load type nanometer ferro-nickel composite material is obtained. The nanometer ferro-nickel dual-metal particles are loaded on charcoal, the reactivity and stability of the nanometer ferro-nickel particles are improved, and water pollution in-situ repair is promoted; the method can be used for repairing high-concentration PBDEs pollution water, and the repair efficiency is high.

The invention discloses a method for measuring the content of decabromodiphenyl oxide in plastics by liquid phase chromatography. The method of the invention comprises the following steps: dissolving plastics into tetrahydrofuran for forming solution; carrying out centrifugal separation on the solution; taking supernatant liquor for carrying out micro-filtration to obtain filter liquid of chromatography solution to be measured; and adopting high-efficiency liquid phase chromatography to measure the content of decabromodiphenyl oxide in the chromatography solution to be measured. Thereby, the total analysis time of the decabromodiphenyl oxide is reduced from at least two hours to half an hour. The method of the invention realizes the goal of fast detecting the content of decabromodiphenyl oxide in the plastics by the efficient liquid phase chromatography method. The invention is applicable to the measurement of content of the polybrominated diphenyl ether in various plastics (such as polystyrene, high impact polystyrene and the like) capable of being dissolved in tetrahydrofuran, particularly the measurement of the content of decabromodiphenyl oxide in the plastics of various electronic and electric appliance products with the inflaming retarding performance requirements.

The invention discloses a method for detecting polybrominated biphenyl ether by using a Fe3S4-magnetic effervescent tablet assisted ionic liquid-based dispersion liquid liquid microextraction combinedtechnology. The Fe3S4 is synthesized by using FeCl3 6H2O and thiourea as raw materials and adopting a solvothermal method for extracting the polybrominated biphenyl ether, and the extraction efficiency of the Fe3S4 is improved by about 21-32% compared with that of a prior commercial magnetic nano material (such as Fe3O4); the effervescent precursors of the effervescent tablets are environmental-friendly and non-toxic inorganic acid salts and basic salts, and replace toxic dispersed organic solvents in the prior dispersion liquid micro-extraction; according to the combined technology, novel environmental-friendly extractant ionic liquid [C4MIM] [PF6] is adopted to replace the prior toxic chlorine-containing solvent, and the whole combined technology embodies the environment-friendly concept. Under the optimum conditions, the technology is used in liquid matrix samples, the recovery of polybrominated diphenyl ether can reach 77.3-106.7%, and the minimum detection limit is as low as 0.012-0.078 Mug/L. The method also has high precision (1.32-4.83%).

The invention discloses a detecting method for PBDEs (polybrominated diphenyl ethers) in a plastic component of an electronic element. The detecting method comprises the following steps of (a) treating a sample to form particles, wherein the mass of each particle is less than or equal to 0.2g; (b) placing the sample treated in the step (a) into a hexane and acetone mixed solution to carry out microwave extraction, wherein the ratio of the sample to a solvent for extraction is 1: (5-20)g/mL; (c) analyzing the solution extracted in the step (b) by using a GC-MS (Gas Chromatography-Mass Spectrometer), and setting a special chromatographic condition. The analysis method provided by the invention is rapid, high in accuracy and good in repeatability and reproducibility.

The invention discloses an analysis method of solid phase extraction coupling solid phase micro extraction, belonging to the technical filed of analysis methods. The method comprises the following steps: filtering water sample by a filter film; activating an SPE enriching column, and then enriching the water sample; eluting the enriched PBDEs in the SPE enriching column and collecting eluent; distilling collected elution solution and condensing to close to dry; transferring the elution substance into an extraction bottle and drying by nitrogen; putting optical fiber with a polydimethylsiloxane coating at a GC injection port and then activating at 260-300 DEG C; adding methanol and distilled water into the extraction bottle dried by nitrogen and carrying out ultrasound blending to form a water sample to be detected, dipping activated optical fiber in the water sample to be tested for extraction; and drying the extracted optical fiber at the injection port, carrying out GC-MS analysis after thermal desorption. In the invention, solid phase extraction is coupled with solid phase microextraction, thus being suitable for analyzing ultratrace polybrominated diphenyl ethers, having low coat and small workload, in addition, the limit of detection of analyzing PBDEs is between 0.06pg/L and 1.84pg/L.

The invention belongs to the technical field of biological treatment of environmental pollutants and discloses Burkholderia GYP1 and an application thereof in degrading a brominated flame retardant. The Burkholderia cepacia GYP1 is preserved in CCTCC on 9th, March, 2017, with the preservation number of CCTCC NO: M 2017103. According to the strain Burkholderia cepacia GYP1 which is in shake cultivation for 4 days at 150r/min at the pH of 4.0-7.0 and the temperature of 30 DEG C, the degradation ratio on 2,2',4,4'-tetrabromodiphenyl ether, the initial concentration of which is 1mg/L, can reach 80% above. The strain can be used for biological repair of water body and soil polluted by polybromodiphenyl ether.

The invention provides a gel chromatographic column for detecting poly brominated diphenyl ethers and metabolites thereof through a GC-MC (gas chromatography and mass spectrography) method. The gel chromatographic column is prepared by the method comprising the following steps: weighing gel and a solvent, mixing the gel in the solvent, shaking to be uniform and swelling; taking a dry and clean chromatographic column, adding the solvent into the chromatographic column, discharging air bubbles between the lower part of a glass sand core filter plate and a piston, so that the space is filled with the solvent; and pouring the gel suspension liquid into the chromatographic column, and adding sea sand on the gel layer, thereby obtaining the gel chromatographic column. The preparation method of the gel chromatographic column is simple, complicated matrix effect can be overcome, and multiple impurities in the matrix containing organic pollutants can be separated, so that the multiple impurities can be effectively removed, and influences to follow-up detection for the organic pollutants are avoided. The invention further provides a method for detecting poly brominated diphenyl ethers and metabolites thereof based on the gel chromatographic column. The method has the advantages of simplicity in operation, good reproducibility, high sensitivity and high accuracy.

The invention relates to the technical field of printing ink, in particular to quick-drying type lead-free environment-friendly glass printing ink and a preparation method thereof. The quick-drying type lead-free environment-friendly glass printing ink comprises the following raw materials in parts by weight: 40-60 parts of lead-free glass powder, 20-30 parts of an organic carrier, 1-5 parts of a dispersing agent, 6-10 parts of pigment and 10-20 parts of a solvent. The quick-drying type lead-free environment-friendly glass printing ink does not contain harmful substances such as lead, cadmium, mercury, hexavalent chromium, PBB (Polybrominated Biphenyl) and PBDE (Polybrominated Diphenyl Ethers), is strong in adhesive force, good in shading property and high in glossiness, well wets a glass substrate, and is well compatible with the glass substrate.

The invention discloses a method for restoring soil contaminated by poly-brominated diphenyl ether by combining solubilization of a surface active agent and a microwave irradiation technology. The method comprises the steps of feeding a gemini/ traditional mixed surface active agent into the soil contaminated by the poly-brominated diphenyl ether, and carrying out microwave irradiation. After the surface active agent is used, hydrophobic organic contaminant can be easily dissolved; the contaminant in the soil can be enriched, fixed or destroyed by the microwave irradiation technology; therefore, the aim of treating the contaminant in the soil can be achieved. The method is simple, efficient, easy to control and free from secondary pollution; after the method is used, the target contaminant can be selectively degraded, the surface active agent is hardly influenced, and a necessary precondition is provided for recycling the surface active agent solution.

The invention relates to the technical field of nanometer functional materials and electric heating, in particular to a nanocomposite high-temperature ceramic material and a membrane material. Its components and the weight percentage of the components include 60-80% of the main crystal phase, 20-40% of the mixture powder of nano-scale yttrium hydroxide and aluminum hydroxide, or its components include the main crystal phase, nano-scale hydrogen A mixture powder of yttrium oxide and aluminum hydroxide, a binder phase and an organic solvent. The binder phase is a submicron lead-free glass powder, which is ground from lead-free glass powder through high-energy ball milling equipment. The main crystal phase is submicron powder silicon made by high energy ball milling equipment. The nano-composite high-temperature material of the present invention has the following effects: high heating temperature; raw materials do not contain toxic substances such as lead, mercury, cadmium, hexavalent chromium, polybrominated diphenyl ether, benzene, etc., and are environmentally friendly materials without environmental pollution; Infrared radiation energy and high electric-thermal radiation conversion efficiency; excellent thermal shock resistance.

The invention relates to a preparation method of a polybrominated biphenyl ether monomer. The method comprises the steps that iodine is oxidized by sodium iodate and is subjected to reaction with bromobenzene to obtain a series of diaryl iodonium salt, and the diaryl iodonium salt and the bromobenzene are subjected to reaction under catalysis of alkali, and polybrominated biphenyl ether is obtained. According to the method, any type of polybrominated biphenyl ether monomer can be prepared, and the method can support detection and activity researches of the type of compounds.

The invention discloses a heat-resistant and flame-retardant modified natural rubber cable sheath material. The material is prepared from natural rubber, nitrile rubber, ethylene propylene diene monomer, silazane silicone rubber, stearic acid, magnesium oxide, dicumyl peroxide, 1,3,5-trithione-2,4,6-symtriazine, 1,1-di-tert-butylperoxide-3,3,5-trimethyl-cyclohexane, manganese phosphate, magnesium hydrate, modified carbon nanotube, zirconium diboride, anti-aging agent, accelerant M, accelerant TMTD, poly brominated diphenyl ethers, trioctyl trimellitate, dimethyl methylphosphonate and polyoxyethylene rosin ester. The material has excellent heat resistance and flame retardance, is high in strength and long in service life, and can meet the use requirements of cable sheath materials in various fields.

The invention relates to mirror ink for automotive glass and a preparation method of the mirror ink. The mirror ink is characterized by comprising, by mass, 10-30% of organic carriers, 2-8% of solvent, 2-8% of pigment raw materials and the balance unleaded glass powder. The ink for the automotive side windshield glass contains no harmful substances such as lead, cadmium, mercury, hexavalent chromium, PBB (polybrominated biphenyl) and PBDE (polybrominated diphenyl ethers) so as to meet the requirements of social devolvement on environmental protection. The mirror ink has the advantages that the mirror ink gives priority to the unleaded glass powder which contains no elements such as lead, cadmium, mercury and hexavalent chromium harmful to the environment, so that environmental protection is benefited; and the mirror ink is good in wettability, surface smoothness and bonding strength with the glass after sintering and high in shading rate and acid-resistant, has gloss exceeding requirements of general manufacturers and can completely substitute for exiting ink to be used for the field of automotive glass manufacturing.

The invention relates to a PBDE monoclonal antibody hybridoma cell strain and application thereof, and belongs to the field of food safety immunology detection. PBDE complete antigens and an equal amount of a Freund's adjuvant are mixed to be emulsified, and the mixture is subcutaneously injected to the backs of BALB/c mice for immunization. The complete Freund's adjuvant is used in the first immunization, and the incomplete Freund's adjuvant is used in the following immunization. Splenocytes, with high potency and low IC50, of the mice are fused with myeloma cells of the mice according to a PEG method, and the hybridoma cell strain 1A1 is obtained through indirect competition ELISA screening and three times of subcloning. Monoclonal antibodies excreted from the cell strain 1B2 have better specificity and detection sensitivity (the IC50 value is 20 [mu]g/L) on PBDE, and can be used for residue detection of PBDE in food safety.

The invention discloses a conductive coating and a preparation method thereof. The conductive coating comprises a bonding basal layer and a compound base material layer, wherein the bonding basal layer is coated on a base material, the compound base material layer is coated on the bonding basal layer, the bonding basal layer contains the following raw materials in parts by weight: 40-60 parts of polytetrafluoroethylene, 3-10 parts of glass fibers, 0.8-1.6 parts of carbon fibers, 5-9 parts of graphite powder and 1-3 parts of sodium dodecyl sulfate; the compound base material layer contains the following raw materials in parts by weight: 20-36 parts of epoxy resin, 12-20 parts of superfine calcium silicate, 5-10 parts of polybrominated diphenyl ethers, 3-6 parts of vinyl distearamide, 30-60 parts of methylbenzene and 0.8-3.8 parts of conductive carbon black. The conductive coating disclosed by the invention has good conductivity, strong adhesion and good impact resistance, and conductivity stability of a base material is guaranteed.

The invention discloses a method for measuring trace polybrominated diphenyl ether in high concentration chemical oxygen demand (COD) landfill leachate, belonging to the detection field. The method comprises the steps of: continuously carrying out liquid-liquid extraction, carrying out rotary evaporation concentration, treating the liquid by concentrated sulfuric acid until the liquid is colorless, washing the liquid by water until the liquid is neutral, purifying by a multilayer silica gel column, concentrating by blowing nitrogen, carrying out gas chromatography (GC), carrying out negative chemical ionization mass spectrometry (NCIMS) analysis, and the like; due to the organic coordination of all the steps, the trace polybrominated diphenyl ether in high-concentration COD landfill leachate can be measured; and the target substance can be accurately analyzed by utilizing the conditions of extraction, purification and instruments, so that good recovery rate and purification effect can be obtained.

The invention provides a detection method for twelve poly brominated diphenyl ethers in soil, and belongs to the technical field of environment monitoring. The detection method comprises the followingsteps of after the soil to be detected, copper powder and kieselguhr are mixed, extraction is performed by using an accelerated solvent extraction method to acquire extract liquor; organic solvent replacement is performed after the extract liquor is concentrated to acquire purified liquor; purifying the purified liquor by using a gel permeation chromatography to acquire liquid to be detected; anddetecting the liquid to be detected by using a mass coupled chromatograph. The method provided by the invention is short in time, good in separation and extraction effect of poly brominated diphenylethers in samples, small in impurity interference, high in recovery rate and good in repeatability, and particularly has good application value for the analysis and detection of massive soil samples.