355 results about "Polycyclic aromatic hydrocarbon" patented technology

The invention belongs to the technical field of asphalt pavement repairing, and particularly relates to a local repairing technology of an asphalt pavement, which comprises the following specific contents: detecting a disease range by adopting ground three-dimensional laser scanning or ground penetrating radar, determining a repairing boundary, sampling and detecting the aging degree, the moisture content and the grading type of the asphalt of the original pavement, and determining the repairing quality of the asphalt pavement. According to the method, the bonding strength of the repairing material and the asphalt layer of the original pavement is enhanced by heating and activating the interface of the original pavement and emulsifying the asphalt bonding layer, and matching the repairing material with the shrinkage coefficient of the original pavement and reinforcing and compacting the edge, so that the condition that the repaired position is cracked, loosened and damaged in a short time is avoided; warm-mixed asphalt is adopted, the heating temperature is reduced by 40-60 DEG C, cold-mixed emulsified asphalt is popularized, and the asphalt does not need to be heated, so that release of a large amount of volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs) and dust is effectively avoided, and air pollution is avoided.

The invention discloses a Raman spectrum joint classification and quantification method based on a prior fusion double-flow network, and belongs to the technical field of spectral analysis and chemometrics. The method comprises the following steps: acquiring Raman spectrum original data, and preprocessing to obtain standardized spectrum data; raman spectrum prior information is extracted, and a prior information double-flow network containing classification and quantitative flow sub-networks is constructed; standardized data and prior information are input, classification preheating-combined fine tuning training is adopted, conflict is relieved by combining dynamic weighting and PCGrad, and samples are expanded through a physical consistency strategy synchronously; processing unknown samples by using the trained network, and outputting categories and component contents; according to the method, weak peak information is mined through double-flow architecture and cross-flow attention, derivative noise is suppressed, classification-quantification performance is balanced through double-task optimization, and small sample overfitting is solved through physical expansion; on a polycyclic aromatic hydrocarbon data set, classification and regression indexes are superior to those of a traditional method, the low-concentration / weak-peak scene precision and robustness are better, and the engineering application prospect is good.

The invention discloses a long-afterglow material based on waste PET and a preparation method and application thereof.Organic luminescent substance crown alkene serves as luminescent molecules and is fused and doped into recycled waste PET, the waste PET is upgraded and reconstructed into a persistent luminescent polymer element, PET macromolecular chains are folded front and back to form regular lamellas, and the lamellas are uniformly distributed on the surface of the waste PET, so that the long-afterglow material based on the waste PET is obtained. Excitons are stabilized, and oxygen in the atmosphere is prevented from being quenched. Due to the planar and rigid structure of the polycyclic aromatic hydrocarbon, intramolecular movement can be inhibited, so that non-radiative decay channels are reduced, and the ultra-long afterglow effect is realized. According to the long-afterglow material, pollution of waste materials is reduced, upgrading and recycling of resources are achieved, upgrading and recycling steps are simple and convenient, cost is low, the preparation process is easy to scale, economical and efficient, and the long-afterglow material has good industrial popularization prospects and has important application value in the technical field of plastic upgrading and recycling.

The invention provides haematococcus alternatus and application thereof. The classification of the haematococcus alternatus is named as Alterrythrobacter sp. H2, and the classification of the haematococcus alternatus is named as Alterrythrobacter sp. The preservation unit is China General Microbiological Culture Collection Center (CGMCC); the address is Institute of Microbiology, Chinese Academy of Sciences, No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing; the preservation date is July 29, 2024, and the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.31487. The alternated red bacillus provided by the invention can degrade various polycyclic aromatic hydrocarbons under various environmental conditions of high salt, high temperature, low temperature, acidity, alkalinity, chromium combined pollution, arsenic combined pollution and the like.

The invention provides a microwave remediation efficiency prediction method for polycyclic aromatic hydrocarbon contaminated soil, and belongs to the field of physical remediation of soil. The method comprises the steps that soil parameters, remediation parameters based on microwave soil remediation and the polycyclic aromatic hydrocarbon removal rate are obtained; based on a data fitting method, determining a corresponding relation between the soil parameter and / or the remediation parameter and the polycyclic aromatic hydrocarbon removal rate; according to the corresponding relation between the soil parameters and / or the remediation parameters and the polycyclic aromatic hydrocarbon removal rate, predicting the polycyclic aromatic hydrocarbon removal rate under the known soil parameters and / or the remediation parameters; according to the method, accurate prediction of the polycyclic aromatic hydrocarbon removal rate of the soil can be realized, and a theoretical basis is provided for optimizing microwave remediation process parameters.

This invention discloses a method for detecting polycyclic aromatic hydrocarbons (PAHs) based on ultraviolet fluorescence and absorption spectroscopy, comprising: Step 1, acquiring the ultraviolet absorption spectrum and the fluorescence emission spectrum of a water sample under ultraviolet light excitation; Step 2, analyzing the corresponding CDOM fluorescence spectrum using the ultraviolet absorption spectrum obtained in Step 1; Step 3, subtracting the CDOM fluorescence spectrum obtained in Step 2 from the fluorescence emission spectrum obtained in Step 1 to obtain a mixed fluorescence spectrum containing multiple PAHs; Step 4, performing multivariate fitting on the mixed fluorescence spectrum obtained in Step 3 to obtain the type and concentration of each PAH in the water sample. This invention also provides a PAH detection device. The method provided by this invention is simple to operate and can directly detect raw water samples, thereby obtaining more accurate PAH detection results.

The invention provides a method for regulating and controlling dynamic kinetic resolution of spiral polycyclic aromatic hydrocarbon based on an inorganic chiral surface and application, and the method comprises the following steps: S1, rotating a substrate clockwise or anticlockwise, and depositing an inorganic material on the substrate by adopting a physical vapor deposition method to obtain an inorganic chiral nano material layer; wherein the contact angle between the inorganic material and N, N-dimethylformamide is less than 22 degrees, and the deposition angle and the normal direction of the substrate form an angle of 86 degrees or 0 degree; s2, dissolving spiral polycyclic aromatic hydrocarbon molecules needing to be split into N, N-dimethylformamide to obtain a solution; then dropwise adding to the surface of the inorganic chiral nano material layer to obtain a sample; and S3, annealing the sample at 40-50 DEG C, and obtaining the homochiral aggregate after the solvent is completely evaporated. The technical scheme provided by the invention is high in controllability, strong in universality and good in stability, and can be used for efficiently preparing chiral compounds with specific configurations.

The present application relates to fluorescent material technical field, especially based on benzopentacyclic / septacyclic structure's carbonyl nitrogen type fluorescent material and its preparation method, the present application provides the preparation method with carbazole as raw material, in the synthesis process, the aldehyde group precursor is directly oxidized to acid by using strong oxidant, then the intermediate is made to occur intramolecular Friedel-Crafts reaction by acid catalyst, finally the carbonyl / nitrogen type fluorescent material of inlaid non-benzene structure is synthesized.This structure inhibits molecular relaxation through multiple resonance effect, and then realizes narrow band emission characteristics.At the same time, the structure retains higher photoluminescence quantum yield.The carbonyl nitrogen type fluorescent material based on benzopentacyclic / septacyclic structure provided by the present application is different from the existing all benzene type polycyclic aromatic hydrocarbons, so as to effectively widen the molecular system of carbonyl / nitrogen type narrow band light emitting material.

The invention belongs to the field of polluted soil remediation materials in agricultural environment technology, and particularly discloses a preparation method and application of a composite material for adsorbing and degrading polycyclic aromatic hydrocarbon in soil. The preparation method of the composite material comprises the following steps: co-pyrolyzing the oily sludge and the straws to generate pyrolytic carbon, and loading humic acid to obtain the composite material. The pyrolytic carbon humic acid composite material prepared by the invention is used for adsorbing and degrading polycyclic aromatic hydrocarbon in soil, compared with only pyrolytic carbon or humic acid, the composite material has a better degradation effect, the material preparation process is simple and efficient, the cost is low, and meanwhile, the purposes of improving soil and treating waste with waste are achieved.

The application discloses a preparation method of zinc oxide nanoflower fibers and application thereof. The preparation method comprises the following steps: cleaning and acid treating a nickel-chromium alloy wire base; preparing a zinc oxide seed layer on the surface of the nickel-chromium alloy wire base through an immersion-calcination method; and growing zinc oxide nanoflowers on the seed layer in situ through a hydrothermal method to obtain the zinc oxide nanoflower fibers. The fiber has the nickel-chromium alloy wire as the base, is good in flexibility and high in strength, has a firm combination of the zinc oxide nanoflower coating on the surface, is large in specific surface area, has rich active sites, and exhibits excellent selective adsorption capacity to polycyclic aromatic hydrocarbons. The application also provides application of the fiber in solid-phase microextraction, in particular, application of the fiber in enrichment and detection of trace polycyclic aromatic hydrocarbons in environmental water samples. The fiber is used for solid-phase microextraction of polycyclic aromatic hydrocarbons and detection of trace polycyclic aromatic hydrocarbons in environmental water samples, is low in detection limit, is good in reproducibility, is suitable for environmental water monitoring, and has important practical application value.

The invention discloses a method for determining anthracene and phenanthrene oxides and polycyclic aromatic hydrocarbon pollutants in tea leaves, and belongs to the technical field of tea leaf component determination, by using the method, whether a tea leaf sample contains anthraquinone, phenanthrenequinone, multiple polycyclic aromatic hydrocarbons and other pollutants can be accurately determined at the same time, and quantitative analysis can be performed. The method has the characteristics of high detection efficiency, accurate analysis result and good repeatability; comprising the following steps: S1, respectively taking reference substances to prepare reference substance stock solutions with different numbers, taking a blank tea reference substance, and carrying out extraction, magnetic separation, extraction and elution to obtain a blank matrix extracting solution; s2, taking each reference substance stock solution, respectively preparing reference substance solutions with different numbers by using a blank matrix extracting solution, and sequentially putting the reference substance solutions into a gas chromatograph-tandem time-of-flight mass spectrometer for determination to obtain spectrum information of each reference substance; and S3, collecting data information of each reference substance from the map information of each reference substance, and then establishing a comparison database.

The invention relates to a multi-part moxibustion auxiliary nursing device and a method thereof, and belongs to the technical field of modern rehabilitation and daily health care, and the method comprises the following steps: S1, arranging a sound wave agglomeration flow channel and a downstream variable cross-section cyclone separation guide pipe; s2, the driving frequency is corrected along with temperature adjustment, the pipe diameter is made to be integral multiples of the half-wavelength, and it is ensured that standing wave nodes are located in the center of the section; s3, moxa-moxibustion smoke is introduced, and the flow speed is controlled to be 2-4 m / s so that the laminar flow state can be kept; s4, starting 27 to 29 kHz, gt; 140dB ultrasonic standing waves are adopted, and tar is driven by acoustic radiation force until wave nodes are gathered into gt; 10 [mu] m large particles; s5, the airflow tangentially enters an inverted-cone-shaped pipe, large particles are captured through centrifugal force, and medicine volatile oil gas is discharged from the center. According to the method, harmful substances such as polycyclic aromatic hydrocarbon and the like are efficiently removed, meanwhile, monoterpenoids and sesquiterpenoids volatile oil components in the moxa smoke are reserved to the maximum extent, and the medicinal value of moxibustion nursing is ensured.

The invention discloses a polycyclic aromatic hydrocarbon cationic compound with high photothermal conversion efficiency and a synthesis method and application thereof, and belongs to the technical field of organic functional materials. According to the method, conjugation expansion is realized through a Scholl reaction, and a large-steric-hindrance group is introduced for dynamic protection, so that a compound A is successfully obtained. The powder of the compound A shows excellent photo-thermal conversion performance under 1064 nm near-infrared light irradiation, shows up to 90% of photo-thermal conversion efficiency under 1.4 W cm <-> power density, can be rapidly heated to 330 DEG C or above, and shows excellent photo-thermal stability due to the fact that the performance is not attenuated after multiple times of switching cycle. As a photo-thermal agent, the compound can be used for low-power non-contact precision welding of various metal materials, and has important application value in the fields of microelectronic manufacturing, precision instrument assembly and the like. According to the invention, the technical problem that the existing photo-thermal material is difficult to realize high photo-thermal conversion efficiency and high limit working temperature at the same time in a 1064nm window is successfully solved.

An optically anisotropic polymer thin film includes a crystallizable polymer and an additive configured to interact with the polymer (e.g., via π-π interactions) to facilitate chain alignment and, in some examples, create a higher crystalline content within the polymer thin film. The polymer thin film may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 50% of the molecular weight of the crystallizable polymer. Example crystallizable polymers include polyethylene naphthalate, polyethylene terephthalate, polybutylene naphthalate, polybutylene terephthalate, as well as derivatives thereof. Example additives, which may occupy up to approximately 10 wt. % of the polymer thin film, include aromatic ester oligomers, aromatic amide oligomers, and polycyclic aromatic hydrocarbons, for example. The optically anisotropic polymer thin film may be characterized by a refractive index greater than approximately 1.7 and an in-plane birefringence greater than approximately 0.2.

The application discloses a special leaching agent for organic matter and heavy metal compound contaminated soil and a preparation method thereof, relates to the technical field of leaching agents for compound contaminated soil and preparation thereof, and the preparation steps are as follows: first, carboxyl-modified fulvic acid is prepared, a mineral source fulvic acid is taken to prepare a suspension, high-purity nitrogen is introduced to remove oxygen, and then ammonium persulfate initiator is added; after water bath heating, acrylic acid monomer is uniformly and slowly added for reaction; after the reaction is completed, the system pH is adjusted; after dialysis and impurity removal, freeze-drying is carried out to obtain modified fulvic acid with an acrylic acid grafting rate of 15% to 30%; and the modified fulvic acid is taken to prepare a phosphate buffer suspension. The application improves the number of active functional groups of fulvic acid through acrylic acid grafting modification, greatly enhances the heavy metal chelation and polycyclic aromatic hydrocarbon solubilization capacity, and covalently crosslinks functional bacteria on the fulvic acid carrier, so that the functional bacteria can be adapted to different acid-base values of contaminated sites and are suitable for soil remediation of various compound contaminated sites.

The application discloses a floating composite microbial preparation for removing marine oil pollution and a preparation method thereof. The floating composite microbial preparation contains bacillus thuringiensis NH26 strain, hollow glass microbeads and a lipopeptide surfactant purified from a fermentation liquor of the NH26 strain, has floating characteristics, can rapidly activate and efficiently degrade oil hydrocarbon, has good degradation capacity for alkanes and polycyclic aromatic hydrocarbons in seawater, and still has good degradation capacity for alkanes in seawater containing high-concentration oil hydrocarbon. The floating composite microbial preparation can be used for removing marine oil pollution and repairing marine environment. In addition, the application further provides a preparation method of the floating composite microbial preparation. The preparation method has simple preparation process, the obtained floating composite microbial preparation has uniform particle size, has high embedding rates for nitrogen and phosphorus, and can be prepared on a large scale.

This invention relates to a stable and durable high-content waste tire rubber powder modified asphalt, its mixture, and a preparation method. The raw materials, by weight percentage, are: 100 parts base asphalt; 40-50 parts waste tire rubber powder; 5-7 parts viscosity reducer; 0.1-0.8 parts crosslinking agent; and 1-2 parts reinforcing agent. The crosslinking agent is ABS, and the viscosity reducer is at least one selected from naphthenic rubber oil, alkane rubber oil, aromatic rubber oil, and polycyclic aromatic rubber oil. In the mixture, 40-mesh and 200-mesh waste tire rubber powder are added. The combination of rubber powder with different particle sizes replaces aggregate and filler in equal amounts, and forms a combination with some incompletely swollen rubber powder in the modified asphalt, achieving stable gradation. This high-content waste tire rubber powder modified asphalt not only significantly increases the waste tire rubber powder content but also exhibits good product stability and can be stored for a longer period. The stability and durability of its modified asphalt mixture are significantly improved, further enhancing the road performance of rubber asphalt and extending the service life of the pavement.

This application discloses a negative curvature polycyclic aromatic hydrocarbon containing an eight-membered ring, its synthesis method, and its application, belonging to the field of organic synthesis. The synthesis method uses a haloacenaphthene derivative as a starting material. First, a tetrahalogenated key intermediate containing an eight-membered ring is constructed via a titanium tetrachloride-catalyzed cyclization tetramerization reaction. Subsequently, this intermediate undergoes a cyclization coupling reaction with an alkyne compound in the presence of a palladium catalyst, silver salt, and phosphine ligand to generate a negative curvature polycyclic aromatic hydrocarbon containing an eight-membered ring. The synthesis method of this application avoids multi-step precursor synthesis, resulting in a concise process. It allows for the flexible introduction of functional groups such as trifluoromethyl and silyl groups, improving the solubility and processability of the material. The obtained product exhibits a non-planar configuration, a narrow optical band gap, and excellent electron transport properties, making it suitable for applications... n Applications include semiconductors, chiral optoelectronic materials, and nano-carbon materials.

The invention discloses a petroleum coke microstructure regulation and graphite negative electrode material and a preparation method thereof.The preparation method utilizes heavy oil containing polycyclic aromatic hydrocarbon to generate a petroleum coke and graphite negative electrode material, and comprises the steps that after impurities in the heavy oil are removed, a structure regulator is added under the ultrasonic action, and then upper-layer and lower-layer heavy oil is generated; the materials are respectively used as raw materials of petroleum coke and a negative electrode material. According to the method, the low-sulfur and low-nitrogen quality of petroleum coke can be achieved without complex raw material pretreatment, hydrogenation and other processes, the production cost is reduced, the method is easy to apply and popularize in common petrochemical companies, high-added-value utilization of heavy oil of the petroleum and petrochemical companies is achieved, and the method is suitable for industrial production. The high-performance preparation of petroleum coke and the overall improvement of the comprehensive performance of artificial graphite are realized.

The invention relates to the technical field of organic pollution treatment, in particular to a lignin grafted graphene oxide quantum dot material, a preparation method thereof and a polycyclic aromatic hydrocarbon degradation method, and the material is prepared by grafting reaction of alkaline lignin and graphene oxide quantum dots under alkaline conditions. When the strain is applied to degradation of polycyclic aromatic hydrocarbon, the strain and a Microbacterium sp.W1-2 strain with the preservation number of CGMCC (China General Microbiological Culture Collection Center) NO.35223 form a synergistic degradation system. The material can significantly promote thallus growth, enhance pollutant interface mass transfer and bioavailability, and realize efficient degradation in a dark environment without photocatalysis. Experiments show that under the condition that the initial concentration of benzo [a] pyrene is 5000g / L, by adding the material, the degradation rate within 6 hours can be increased to 651.4 g / h, which is increased by 2.9 times compared with that of a single strain; and the removal rate within 72 hours reaches 86.4%. The method has the advantages of being high in degradation efficiency, short in period, high in environmental adaptability, independent of illumination and the like, and is suitable for rapidly repairing the polycyclic aromatic hydrocarbon in the industrial wastewater.

The invention relates to the technical field of environmental remediation microorganisms, and discloses a mixed polycyclic aromatic hydrocarbon degrading bacterium G3 suitable for variable environments and application thereof. The bacterial strain is pseudoxanthomonas sp. G3, and is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC M 20251828. The strain G3 is enriched and separated from soil of a certain coking plant in Beijing, can utilize polycyclic aromatic hydrocarbons such as acenaphthene, fluorene, phenanthrene, fluoranthene and pyrene as a single carbon source, and can simultaneously degrade acenaphthene, fluorene, phenanthrene, fluoranthene and pyrene mixtures within 14 days, so that the degradation rate of each component is not lower than 70%; good growth and degradation activity are maintained under the conditions that the temperature is 20-37 DEG C, the salinity is 0-4% NaCl and the pH value is 5.0-9.0, and the degradation rates can reach 100% and 84.15% respectively after the strain is cultured in a single carbon source culture solution with the initial concentration of phenanthrene and pyrene being 50 mg.L <-1 > for 7 days; after the polycyclic aromatic hydrocarbon aging polluted soil is cultured for 28 days, the mixed polycyclic aromatic hydrocarbon in the soil can be effectively removed. According to the invention, the technical bottlenecks of poor environmental adaptability and low mixed pollutant degradation efficiency of the existing degrading bacteria are solved. Therefore, the strain has good application potential in the aspect of bioremediation of the polycyclic aromatic hydrocarbon polluted environment.

The invention discloses application of a hierarchical pore nanoreactor catalyst in preparation of saturated cycloalkane, and belongs to the technical field of catalysts. The method comprises the following steps: uniformly dispersing ZIF-8 in a solvent, adding dopamine hydrochloride and amino acid, stirring at a certain temperature, and carrying out suction filtration and drying to obtain a dopamine-amino acid polymer modified ZIF-8 composite material; dispersing the composite material and a metal precursor in a solvent, uniformly stirring, and carrying out vacuum drying to remove the solvent; and carrying out segmented roasting in an inert atmosphere to obtain the required hierarchical pore nano-reactor catalyst. The catalyst is applied to preparation of saturated cycloalkanes by hydrogenation of polycyclic aromatic hydrocarbons, and specifically, a solvent, polycyclic aromatic hydrocarbons, the catalyst and hydrogen are mixed for a catalytic hydrogenation reaction. The hierarchical pore hollow structure of the catalyst can significantly promote diffusion and enrichment of polycyclic aromatic hydrocarbon molecules of different sizes, and rich pyridine nitrogen sites have strong adsorption and activation capabilities on polycyclic aromatic hydrocarbon and hydrogen molecules.

The invention is related to a process for synthesizing a sustainable aviation fuel composition. The process comprises providing a reaction mixture comprising a first compound that is at least one of mevalonolactone, mevalonic acid, mevalonate salt, dehydromevalonic acid, dehydromevalonate salt, dehydromevalonolactone or combinations thereof. The process then involves converting the first compound in the reaction mixture to provide a first intermediate comprising isoprene. Then, the isoprene in the first intermediate is reacted in the presence of a first heat transfer agent to provide a second intermediate comprising terpenes. Finally, the second intermediate is allowed to react in the presence of a second heat transfer agent, or alternatively in neat conditions, and optionally in presence of a catalyst to provide the sustainable fuel composition. The sustainable aviation fuel composition made available from the process of the invention is found to comprise monocyclic aromatic hydrocarbons (MAHs) at useful concentration ranges (along with cycloalkanes) while they are substantially devoid of Polycyclic aromatic hydrocarbons (PAHs).

A process for upgrading a pyrolysis oil comprising contacting a pyrolysis oil feed with hydrogen in a first fixed bed reactor in the presence of a mixed metal oxide catalyst wherein: the pyrolysis oil feed comprises a polycyclic aromatic hydrocarbon compound comprising greater than or equal to 16 carbon atoms; and contacting the pyrolytic oil feedstock with hydrogen in the presence of a mixed metal oxide catalyst in a first fixed bed reactor to convert at least a portion of the polycyclic aromatic hydrocarbon compounds in the pyrolytic oil feedstock into bicyclic aromatic hydrocarbon compounds, tricyclic aromatic hydrocarbon compounds, or both, passing the intermediate stream comprising the bicyclic aromatic compound, the tricyclic aromatic compound, or both to a second fixed bed reactor downstream of the first fixed bed reactor; and contacting the intermediate stream with hydrogen in the presence of a mesoporous supported metal catalyst in a second fixed bed reactor.

The application discloses a preservative for reducing the content of polycyclic aromatic hydrocarbons in meat products and application thereof. The preservative comprises Lactobacillus pentosus R3, the Lactobacillus pentosus R3 is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC No. 26346, and the preservation date is December 27, 2022. The preservative is inoculated on the surface of the meat product, the growth of spoilage microorganisms can be inhibited, fat oxidation of the meat product is delayed, the shelf life of the smoked meat product is prolonged, the content of polycyclic aromatic hydrocarbons in the smoked meat product can be significantly reduced, and the food safety is improved.

This invention relates to the field of cigarette component analysis technology, and particularly to smoke adsorption materials, trapping sheets, and methods for detecting volatile components in cigarette smoke. The smoke adsorption material comprises tetraazacalix[2]aromatic[2]triazine supported on a covalent organic framework. It exhibits good trapping effect on various components in cigarette smoke, especially polycyclic aromatic hydrocarbons and aromatic amines in very low concentrations. Furthermore, it has a stable structure, the tetraazacalix[2]aromatic[2]triazine is not easily detached, and it has a long service life. When this material is made into a smoke trapping sheet for the detection of volatile components in cigarette smoke, it can fundamentally reduce the extraction loss of smoke components and improve the final detection range and accuracy.

The invention discloses a nicosulfuron pseudomonas (Pseudomonas nisulfuron HD1) with a capability of degrading multiple pollutants and an application of the nicosulfuron pseudomonas (Pseudomonas nisulfuron HD1, and belongs to the technical field of screening and application of functional microorganisms. The strain is derived from a chicken manure aerobic composting environment, the preservation number is GDMCC No: 67351, and nitro polycyclic aromatic hydrocarbons, polycyclic aromatic hydrocarbons and tetracycline antibiotics can be efficiently degraded at the same time. In a single pollutant with the concentration of 50 mg / L, the degradation rates of tetracycline and doxycycline exceed 97% in 8 h, the degradation rate of nitrofluoranthene reaches 99.01% in 48 h, and the degradation rate of phenanthrene reaches 66.17%. In nitrofluoranthene-phenanthrene composite pollutants, the 48-hour degradation rate is kept to be 78% or above. The strain is high in degradation efficiency and strong in environmental adaptability, provides a new microbial resource for bioremediation of a combined pollution site, and has a wide application prospect.

The application discloses a coal pyrolysis method and device for realizing in-situ ring-enriching modification of tar, and the method is as follows: block coal is pyrolyzed to obtain coal tar, semi-coke and pyrolysis gas; the coal tar and a ring-enriching modifier are subjected to in-situ ring-enriching modification reaction in a coal pyrolysis device under hydrogen to obtain coal tar; the in-situ ring-enriching modification reaction temperature is 200-250 DEG C, and the reaction pressure is 101-120 KPa.The coal tar obtained by the method is rich in polycyclic aromatic hydrocarbons and is suitable for being used as a processing raw material of high-density fuel.The device introduces the ring-enriching modification reaction on the basis of the coal pyrolysis, so that the coal tar is subjected to in-situ ring-enriching modification in the pyrolysis, and the obtained coal tar is more suitable for being used as the processing raw material of the high-density fuel.The pyrolysis device has the characteristics of low cost and low heat loss.

The invention relates to a method for separating polycyclic aromatic hydrocarbon in aromatic hydrocarbon-rich oil and a processing device, the method comprises the following steps: the aromatic hydrocarbon-rich oil and a main solvent enter an extraction tower from the upper part, an anti-solvent enters the extraction tower from the lower part, and under the extraction separation condition, the aromatic hydrocarbon-rich oil, the main solvent and the anti-solvent are in countercurrent contact for extraction separation; raffinate flows out of the top of the extraction tower, and raffinate oil is obtained after solvent recovery; the extraction liquid flows out of the bottom of the extraction tower, and the obtained extraction oil is polycyclic aromatic hydrocarbon oil after solvent recovery; the solubility of the main solvent to aromatic hydrocarbon is greater than the solubility of the main solvent to alkane, and the anti-solvent is C3-C5 alkane. According to the method provided by the invention, C3-C5 is used as an anti-solvent, the selectivity is strong, the light aromatic hydrocarbon in the extraction liquid can be effectively subjected to back extraction, the yield of the raffinate oil is improved, and meanwhile, the content of polycyclic aromatic hydrocarbon in the raffinate oil is not increased. The obtained raffinate oil can be used as environment-friendly aromatic rubber oil, and the extract oil can be used as polycyclic aromatic oil for blending asphalt products or low-sulfur ship fuel.