389 results about "Sumanene" patented technology

The invention relates to a petroleum polluted soil polycyclic aromatic hydrocarbon migration path simulation experiment system, which comprises a main reaction cabin, a mechanical arm collaborative operation module, a multi-mode sensing module, a whole natural environment regulation and control module and an edge intelligent decision-making platform, an annular magnetic suspension track is arranged at the top of the main reaction cabin, and a soil sample chamber is arranged at the bottom of the main reaction cabin; the multi-modal sensing module comprises an EIT (electrical impedance tomography) module, an LIBS (laser-induced breakdown spectroscopy) module and a terahertz time-domain spectroscopy module and is used for measuring global conductivity distribution of soil in a soil sample chamber, inverting the porosity of the soil sample and a pollutant concentration field in pore water, analyzing the concentration of carbon, hydrogen and oxygen elements of pollutants and specifically detecting polycyclic aromatic hydrocarbon molecules; the edge intelligent decision-making platform interacts with the multi-mode sensing module, the full-natural-environment regulation and control module and the mechanical arm collaborative operation module to actively adjust system parameters, and repair intervention is carried out on soil body degradation. And automatic preparation of the polluted soil can be realized, and migration monitoring under different practical engineering application working conditions can be realized.

The invention discloses a method for repairing a phenanthrene-cadmium co-polluted environment by using a biochar-based immobilized microbial inoculum, the method is characterized in that the phenanthrene-cadmium co-polluted environment is treated by using the biochar-based immobilized microbial inoculum, and the biochar-based immobilized microbial inoculum is prepared by using modified peanut shell biochar as a carrier. The modified peanut shell biochar is loaded with a phenanthrene efficient degrading flora SMP, and the phenanthrene efficient degrading flora SMP is obtained by domesticating coking plant sludge as a raw material and polycyclic aromatic hydrocarbon as a carbon source. The method has the advantages of being high in treatment efficiency, good in remediation effect, simple in process, convenient to operate, low in treatment cost and the like, phenanthrene in the soil can be effectively removed, cadmium in the soil can be effectively fixed, the use value is high, the application prospect is good, and a green and environment-friendly biological way is provided for remediation of the phenanthrene-cadmium co-polluted environment.

The invention belongs to the technical field of environmental protection, and discloses a method for rapidly and efficiently removing and recycling polycyclic aromatic hydrocarbon in water and a carbon-based adsorbent, the method comprises the following steps: S1, preparing a modified carbon-based adsorbent; s2, treating the polycyclic aromatic hydrocarbon pollutant wastewater; and S3, recycling the polycyclic aromatic hydrocarbon. According to the preparation method, H3PO4 or ZnCl2 is taken as an activating agent, and an activated carbon base material and an activating process are controlled, so that nano-micron multi-scale modified carbon-based adsorbent particles which are mainly prepared from a large number of long-strip-shaped gap mesopores which are communicated with one another and are approximately distributed in parallel and are auxiliary from a small number of discrete irregular groove-shaped mesopores are obtained; the long and narrow long-strip-shaped gap mesopores of the particle are matched with the irregular groove-shaped mesoporous structure, so that large-size polycyclic aromatic hydrocarbon can be quickly adsorbed and desorbed, and the balance of adsorption and desorption efficiency can be realized; on one hand, the adsorption and desorption efficiency of pollutants is improved, and on the other hand, the dosage of the adsorbent is greatly reduced.

The invention provides a preparation method of a double-ligand MOF photocatalyst, and belongs to the technical field of organic metal hybrid nano materials, and the prepared double-ligand MOF photocatalyst has excellent visible light response and photochemical conversion properties, and can realize efficient conversion of NADH under visible light. According to the technical scheme, the method comprises the following steps: (1) adding tetravalent zircon salt, a porphyrin compound and a polycyclic aromatic hydrocarbon compound into an organic solvent; after dissolving, introducing organic acid and carrying out ultrasonic treatment to dissolve the organic acid; and transferring the obtained solution to a reaction kettle, heating to react for a certain time, cooling, washing with an organic solvent, and drying to obtain the MOF photocatalyst with double ligands. The obtained composite photocatalyst can be applied to efficient regeneration of NADH (Nicotinamide Adenine Dinucleotide).

The invention discloses a method for preparing humic acid by graded oxidation and depolymerization of lignite, which comprises the following steps: weighing lignite, adding hydrogen peroxide for oxidation pretreatment, filtering and vacuum drying to obtain primarily oxidized lignite named as PTSL; and carrying out a deep oxidation experiment on the obtained PTSL by using a mixed gas of ozone and oxygen, after the oxidation reaction is finished, carrying out centrifugal filtration on the mixture, and collecting a liquid sample. The lignite is subjected to gradient oxidation depolymerization in a graded oxidation mode, the green oxidant hydrogen peroxide firstly oxidizes and breaks weak bridge bonds and side chain structures in the lignite without damaging aromatic ring structures, then the lignite is further deeply oxidized through the strong oxidant ozone, polycyclic aromatic hydrocarbon structures in the lignite are gradually damaged, and the content of the polycyclic aromatic hydrocarbon in the lignite is reduced. The step-by-step oxidative depolymerization of the organic matters in the coal is realized. According to the method, the organic matter conversion rate and the humic acid yield of the lignite can be improved, and the impurity content in the humic acid is reduced.

The invention discloses a plant-microorganism enhanced multiphase extraction organic pollution remediation method. The method comprises the steps of site evaluation, phytoremediation system construction, microbial remediation system construction, multiphase extraction enhancement, remediation process monitoring and adjustment, pollutant removal and ecological restoration. According to the method, a plant-microorganism enhanced multiphase extraction synergistic effect remediation system is constructed, the problem that the efficiency of a single plant remediation or microorganism remediation technology is low is effectively solved, degradation and removal of organic pollutants are accelerated, efficient treatment of refractory pollutants such as polycyclic aromatic hydrocarbons, polychlorinated biphenyls and organophosphorus pesticides is achieved, and the method has the advantages of being simple in process, low in cost and good in application prospect. In the remediation process, the influence on the ecological environment is small, secondary pollution is not likely to be generated, and the method has both economical efficiency and environmental friendliness and is suitable for treatment of multiphase pollutants in complex contaminated sites including soil, water and solid waste.

The invention discloses a Pseudomonas nicosulfurones bacterial strain and an application of the Pseudomonas nicosulfurones bacterial strain in degradation of phenanthrene and benzopyrene. According to the invention, a degradation strain Pseudomonas nicosulfurensis DY-8, which takes phenanthrene and benzopyrene as carbon sources, is obtained by domestication, separation and identification from petroleum-polluted soil in Ningbo. The invention also relates to a method for preparing the degradation strain Pseudomonas nicosulfurensis DY-8 with phenanthrene and benzopyrene as carbon sources. The DY-8 can utilize phenanthrene and benzopyrene as carbon sources, and after the DY-8 is cultured in an inorganic salt culture solution with the initial concentration of phenanthrene and benzopyrene being 50 mg.L <-1 > and 25 mg.L <-1 > respectively for 7 days, the degradation rates of phenanthrene and benzopyrene can reach 70% or above. Therefore, the strain has good application potential in the aspect of bioremediation of polycyclic aromatic hydrocarbon.

The invention belongs to the technical field of biological culture, and particularly relates to a chlorella extracellular fluid and a preparation method and application thereof.The preparation method of the chlorella extracellular fluid comprises the following steps that a BG11 culture medium is inoculated with a chlorella solution cultured to the logarithmic phase, oxcarbazepine is added, and the chlorella extracellular fluid is obtained; the preparation method comprises the following steps: placing chlorella in an intermittent illumination environment with the temperature of 20-30 DEG C and the rotating speed of 100-200 rpm for growth, centrifuging the chlorella to obtain supernate after the chlorella grows to the 10th-16th day, filtering, sub-packaging, and performing cryopreservation to obtain the chlorella extracellular fluid. By adding oxcarbazepine, the chlorella extracellular fluid prepared in a specific culture medium and a specific growth environment has high oxidation activity, excellent stability and excellent degradation capacity, and a new thought is provided for solving the pollution treatment problem of current environmental pollutants such as pharmaceutical products, polycyclic aromatic hydrocarbons and dyes.

The invention relates to a nitrogen-containing bowl-shaped conjugated pH-responsive fluorescent probe and a preparation method and application thereof, the nitrogen-containing bowl-shaped conjugated pH-responsive fluorescent probe is characterized in that the structural formula of the nitrogen-containing bowl-shaped conjugated pH-responsive fluorescent probe is # imgabs0 #, and R is hydrogen, acetyl or p-toluenesulfonyl. Compared with the prior art, the nitrogen-containing bowl-shaped conjugated molecule provided by the invention shows a highly sensitive response characteristic in an acid-base medium. Due to the introduction of nitrogen atoms, the electronic structure of molecules is obviously changed, lone pair electrons of the nitrogen atoms can participate in the reaction, and the protonation behavior is obvious under the acidic condition. After protonation, the fluorescence intensity of the molecule is obviously enhanced, and the emission wavelength has obvious red shift, so that the probe has important application value in the aspect of developing a high-sensitivity acid-base sensor. In addition, the nitrogen-containing polycyclic aromatic hydrocarbon compound also shows application prospects in the fields of organic light-emitting diodes, information safety, biological imaging and the like.

To provide a light-emitting compound having a narrow half-value width and a stable skeleton, for example a novel polycyclic aromatic compound applicable to blue light emission, and to provide a method for producing a light-emitting compound that is capable of producing such a polycyclic aromatic compound, preferably using a non-noble metal catalyst, which is suitable for a sustainable society.SOLUTION: According to one embodiment of the present invention, a light-emitting compound is a polycyclic aromatic compound represented by the following formula (I).SELECTED DRAWING: None

The invention discloses a hydroxyl polycyclic aromatic hydrocarbon Raman spectrum detection method based on a dynamic weighted voting fusion network, relates to the technical field of hydroxyl polycyclic aromatic hydrocarbon detection, and provides an effective method which is rapid, accurate and free of chromatographic separation. Spectral information of OH-PAHs is obtained by using surface enhanced Raman spectroscopy SERS, and a Raman spectrum is obtained through density functional theory DFT calculation. A dynamic weighted voting fusion network DWVF-Net model is constructed, wherein the model comprises two core parts of cross-modal attention fusion (CMAF) and dynamic weighted voting (DWV). The CMAF dynamically weights key areas of SERS and DFT Raman spectrums through cosine similarity to realize feature fusion; and the DWV adaptively adjusts the weight of the model according to the real-time performance of the model, and optimizes an integration decision. Through the synergistic effect of CMAF and DWV, complementary information of SERS and DFT Raman spectrums is effectively fused, and the adaptability advantage of a dynamic weighting mechanism in the aspect of processing a complex data environment is verified.

The invention relates to the technical field of water treatment, in particular to a method for treating degradation-resistant organic pollution underground water based on a micro-interface strengthening technology. According to the technical scheme, the method comprises the steps that an underground water sample is collected and subjected to pollution characteristic analysis, composite material slurry is injected into a water-containing layer to construct an interface-enhanced in-situ reaction system, and the slurry is composed of nanoscale iron-based metal particles, graphene oxide derivatives, modified biochar, a surfactant and the like; meanwhile, a low-pressure gas injection system is arranged to form a micro-aerobic environment so as to improve the interface reaction efficiency, dominant microbial communities are synchronously injected, a slow-release carbon source carrier is added so as to strengthen the biological synergistic degradation effect, and the operation state of the system is regulated and controlled through multi-parameter monitoring. According to the method, a micro-interface synergistic system integrating physical adsorption, chemical reduction and biological metabolism is constructed, refractory organic pollutants such as aryl halide and polycyclic aromatic hydrocarbon in underground water can be efficiently and stably removed, and the method has the advantages of being high in remediation efficiency, high in operation stability and wide in environmental adaptability.

The invention relates to an aza-polycyclic aromatic hydrocarbon organic ligand and a preparation method thereof, an aza-polycyclic aromatic hydrocarbon assembled molecular cage and a preparation method and application thereof, the organic ligand takes dimethyl methylene bridged triphenylamine as a core, a benzene ring is modified by an R group, and the molecular cage is prepared from the organic ligand, the organic ligand and the aza-polycyclic aromatic hydrocarbon. A metal organic caged compound obtained by a coordination reaction with a metal complex; the molecular cage is of a truncated tetrahedral structure of twelve metals and eight ligands; each organic ligand is provided with three equal side arms which are wrapped and stacked together in a curved surface manner to form a pseudo six-section ligand; the organic ligands and the metal nodes are self-assembled to form a molecular cage with a hydrophobic cavity for recognizing guest molecules in the center. Compared with the prior art, the organic ligand has flexibility and is combined with metal to construct a novel water-soluble metal organic double-wall knotted flexible molecular cage, a size-adjustable cavity exists in the molecular cage, and selective recognition of nucleotide negative electricity biomolecules in a water phase is achieved.

The invention discloses a bacterium DY-11 for degrading phenanthrene and benzopyrene in petroleum-contaminated soil and application of the bacterium DY-11. The bacterial strain is Achromobacter expander DY-11, and the preservation number of the bacterial strain is GDMCC No: 66005. Experiments prove that the strain DY-11 can respectively utilize phenanthrene and benzopyrene as carbon sources to degrade phenanthrene and benzopyrene, and after the strain DY-11 is cultured in inorganic salt culture solutions with the initial concentration of phenanthrene and benzopyrene being 50 mg.L <-1 > and 25 mg.L <-1 > respectively for 7 days, the degradation rates of phenanthrene and benzopyrene can reach 65% or above. Therefore, the DY-11 is a strain which can degrade phenanthrene and benzopyrene and has very strong tolerance to phenanthrene and benzopyrene, has strong adaptability to polycyclic aromatic hydrocarbons, and has better application potential in the aspect of bioremediation.

The invention discloses a preparation method of recombinant catechol-2, 3-dioxygenase and an application of the recombinant catechol-2, 3-dioxygenase. According to the invention, a novel catechol-2, 3-dioxygenase group C23O927 is identified from a constructed metagenome library, and the catechol-2, 3-dioxygenase group C23O927 is a key enzyme for catalyzing degradation of polycyclic aromatic hydrocarbon pollutants. A C23O927-pET32a (+) recombinant expression vector is constructed and converted into host bacteria, heterologous expression of target protein is achieved, and the prepared recombinase belongs to acid enzymes and has good resistance to high temperature, acid, alkali, high-concentration metal ions, organic solvents and surfactants. The recombinase provided by the invention can be used in an acidic environment, has very good enzymatic activity, can catalytically degrade various catechol compounds, can be better used for treating polycyclic aromatic hydrocarbon polluted environments, and has important significance for developing more products which can tolerate various extreme environments and efficiently catalyze degradation of polycyclic aromatic hydrocarbons.

A process for producing a purified carbon black with a reduced content of oxidized polycyclic aromatic hydrocarbons, such as oxy-polycyclic aromatic hydrocarbons (oxy-PAHs) and / or nitro-polycyclic aromatic hydrocarbons (nitro-PAHs) is provided. The process comprises providing a carbon black comprising an initial content of oxidized polycyclic aromatic hydrocarbons, and subjecting the provided carbon black to a thermal treatment comprising heat treating the carbon black at a temperature of less than 280°C in a vacuum or inert gas atmosphere. Also disclosed are purified carbon blacks obtainable by such process, and applications and uses of these purified carbon blacks.

To provide materials for organic devices such as materials for organic EL elements, comprising compounds different from conventional ones, in order to increase options for materials for organic EL elements.SOLUTION: Options for materials for organic devices such as materials for organic EL elements are increased by condensing a cycloalkane to a polycyclic aromatic compound in which a plurality of aromatic rings are linked together by boron atoms, oxygen atoms, and the like. By using a novel cycloalkane-condensed polycyclic aromatic compound as a material for an organic EL element, for example, an organic EL element having excellent emission efficiency and element life is provided.SELECTED DRAWING: None

The invention discloses a carbon-based polycyclic aromatic hydrocarbon adsorbent and a preparation method and application thereof.The preparation method comprises the steps that firstly, a mixture of a pretreated coconut shell material and a modifier is subjected to high-temperature treatment to obtain a carbonized material, then the carbonized material is immersed in an activating solution to be subjected to low-temperature treatment, and then filtering, washing to be neutral and drying in the shade at the room temperature are conducted to obtain the carbon-based polycyclic aromatic hydrocarbon adsorbent. Carrying out secondary high-temperature treatment to obtain an activated material; and crushing and sieving the activated material to obtain the carbon-based polycyclic aromatic hydrocarbon adsorbent. The carbon-based polycyclic aromatic hydrocarbon adsorbent has obvious advantages in the selective adsorption and removal process of polycyclic aromatic hydrocarbon, silicon species are introduced in the carbonization process, a microporous structure in a carbon material is destroyed in a pillared mode, then the pore structure of the catalyst is regulated and controlled, the mesoporous structure is richer, and the adsorption selectivity of the polycyclic aromatic hydrocarbon is improved; the adsorbent has high adsorption capacity and adsorption selectivity.

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 full-automatic online detection method for trace polycyclic aromatic hydrocarbon derivatives (SPAHs) in water, which comprises the following steps: (1) pretreatment: standing a water sample, centrifugally filtering to remove suspended matters, adding a prepared mixed standard solution, and directly loading on a machine; (2) enrichment and separation: adopting a Turbo flow C18-XL on-line solid phase extraction column to realize automatic enrichment and matrix purification of the 15 SPAHs, and combining an ultra-high performance liquid chromatography gradient elution program (methanol-ultrapure water system) to realize efficient enrichment and separation; and (3) detection and analysis: performing Full MS-ddMS2 scanning in an APCI (Amplified Peripheral Component Interconnect) source-Orbitrap high-resolution mass spectrum positive and negative ion switching mode to realize synchronous detection of hydroxyl, nitro and oxygen-containing SPAHs. According to the method, a unified detection system covering six hydroxyl polycyclic aromatic hydrocarbons, six oxygen-containing polycyclic aromatic hydrocarbons and three nitro polycyclic aromatic hydrocarbons is constructed for the first time, the detection limit is as low as 0.02 ng / L, and compared with a traditional GC-MS method, the sensitivity is greatly improved, and the sample pretreatment time is greatly shortened. Compared with the prior art, derivatization treatment is not needed, continuous sample injection is achieved through an online solid-phase extraction column regeneration technology, complex matrix interference is effectively eliminated in cooperation with a dynamic elimination function, and a high-sensitivity and high-throughput analysis method is provided for ecological risk assessment of trace SPAHs in underground water and surface water.

The invention belongs to the technical field of barbecue meat product processing, and particularly relates to a method for inhibiting cancerogen content in a fresh meat roasting process, which comprises the following steps: (1) adding liquorice into water, and boiling to obtain a liquorice extracting solution; (2) adding the fresh meat into the licorice root extracting solution, and pickling to obtain the pickled fresh meat; and (3) baking the pickled fresh meat. Polyphenols substances rich in the licorice extract are utilized to inhibit decomposition of protein, fat and the like in the baking process of the fresh meat, reduce generation of free radicals and inhibit conversion of precursor substances of polycyclic aromatic hydrocarbons, N-nitrosamines and heterocyclic amines, so that generation of the polycyclic aromatic hydrocarbons, the N-nitrosamines and the heterocyclic amines is inhibited. The method is easy and convenient to operate, raw and auxiliary materials are easy to obtain, the production cost is low, the content of polycyclic aromatic hydrocarbon, N-nitrosamine and heterocyclic amine in the baked fresh meat can be greatly reduced, and the baked meat product is safer to eat.

The invention relates to the technical field of environmental remediation microorganisms, and discloses acinetobacter B2-4, a culture method thereof and application of the acinetobacter B2-4 in degradation of polycyclic aromatic hydrocarbon. The Acinetobacter sp. B2-4 is preserved in the China General Microbiological Culture Collection Center on March 3, 2025, the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC No.33689. The Acinetobacter sp. B2-4 has the advantages that the Acinetobacter sp. The Acinetobacter sp. B2-4 disclosed by the invention is an anaerobic bacterium, and can utilize nitrate, iron, sulfate and the like to replace an electron acceptor in an anoxic environment to continuously degrade polycyclic aromatic hydrocarbon. After the strain is cultured for 45 days, the degradation rate of phenanthrene reaches 74.9%, and the degradation rate of pyrene reaches 56.2%.

The invention discloses a data processing method for mass spectrum identification of polycyclic aromatic hydrocarbons and polycyclic aromatic hydrocarbon derivatives, and relates to the technical field of data processing. The method comprises the following steps: performing feature recognition on each secondary mass spectrum in N secondary mass spectrums of an analyte through a machine learning model to obtain a feature distribution evaluation result of M features corresponding to each secondary mass spectrum; screening a first target secondary mass spectrum from the N secondary mass spectrums, wherein the first target secondary mass spectrum is a secondary mass spectrum comprising double charges and a secondary mass spectrum of single charges matched with the double charges in the N secondary mass spectrums; according to the characteristic distribution evaluation result of the M characteristics corresponding to each secondary mass spectrum and the first target secondary mass spectrum, a molecular formula list of the analyte is generated, and molecular formulas are used for qualitative and quantitative analysis of polycyclic aromatic hydrocarbons and polycyclic aromatic hydrocarbon derivatives. Therefore, the accuracy and identification coverage of polycyclic aromatic hydrocarbon and polycyclic aromatic hydrocarbon derivative identification can be improved, the workload of manual verification is reduced, and the identification efficiency is improved.

The invention belongs to the technical field of environmental restoration, and particularly relates to a modified fulvic acid-charcoal immobilized microbial agent as well as a preparation method and application thereof. The preparation method comprises the following steps: adding a bacterial liquid, modified fulvic acid and biochar into a culture medium for co-culture to obtain the modified fulvic acid-biochar immobilized bacterial agent. The preparation method is simple, convenient, easy to control and environmentally friendly, the cost is reduced, meanwhile, the prepared modified fulvic acid-biochar immobilized microbial agent still shows high microbial strain activity, petroleum hydrocarbon and polycyclic aromatic hydrocarbon in combined pollution are efficiently degraded and can be maintained for a long time, and good industrial application prospects are achieved.

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.

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 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 discloses a method for simultaneously analyzing polychlorinated biphenyls, polycyclic aromatic hydrocarbons and organochlorine pesticides in water, which comprises the following steps: simultaneously extracting polychlorinated biphenyls, polycyclic aromatic hydrocarbons and organochlorine pesticides in a water sample by using a mixed solvent of n-hexane and dichloromethane, merging while extracting, purifying, concentrating and fixing volume, and testing on a machine in two groups, the polychlorinated biphenyl and the organochlorine pesticide are independently used as a group, the polycyclic aromatic hydrocarbon is used as a group, when an extraction solvent adopts a mixed solvent of dichloromethane and n-hexane, the extraction efficiency is gradually increased along with the increase of the proportion of the n-hexane, and when the volume ratio of the n-hexane to the dichloromethane is 9: 1, the extraction recovery rate can reach 78.9%-111%. When 1% of polyethylene glycol 4000 is added in the mixed extraction process with the volume ratio of n-hexane to dichloromethane being 9: 1, the extraction efficiency is remarkably improved, the extraction efficiency recovery rate reaches 84.6%-112%, and it is indicated that the addition of polyethylene glycol 4000 has the remarkable improvement effect. Compared with the prior art, the extraction efficiency is remarkably improved, and the accuracy and precision of the method completely meet the determination and analysis requirements for measuring complex water samples.

Provided is a blue light emitting organic EL device having high emission efficiency and a long lifetime. This organic EL device includes one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers includes a first host selected from indolocarbazole compounds, a second host selected from the compounds represented by the following general formula (2), and, as a light emitting dopant, a polycyclic aromatic compound represented by the following general formula (3) or a polycyclic aromatic compound represented by the general formula (3) as a substructure, wherein Y4 is B, P, P═O, P═S, Al, Ga, As, Si—R4 or Ge—R5, and X4 is O, N—Ar4, S or Se.