534 results about "Sumanene" patented technology

The invention relates to a modified binder for a dry-method electrode, a dry-method electrode pole piece and a preparation method of the dry-method electrode pole piece. Polycyclic aromatic hydrocarbon is dissolved in an aprotic polar solvent, alkali metal is added, and a polycyclic aromatic hydrocarbon alkali metal reagent is generated; and adding polytetrafluoroethylene into the polycyclic aromatic hydrocarbon alkali metal reagent to obtain the modified polytetrafluoroethylene. Alkali metal ions in the polycyclic aromatic hydrocarbon alkali metal reagent can destroy C-F bonds in the PTFE, remove some fluorine atoms on the surface of the PTFE and leave a carbonized layer and some polar groups such as hydroxyl groups, carbonyl groups and unsaturated bonds, and the groups can increase the surface energy, reduce the contact angle and improve the wettability, so that the cohesiveness of the modified PTFE is improved, and the service life of the PTFE is prolonged. The binding force between the PTFE and the conductive agent and the current collector is enhanced, and the problem that the viscoelasticity of the PTFE in the dry-method pole piece is insufficient is solved. Through modification, part of C-F bonds in PTFE are destroyed in advance, so that generation of interface side reaction products is reduced, the problem of initial effect reduction of a dry-method electrode is improved, and the cycle stability of a battery is improved.

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 preparation method and application of a magnetic biochar-loaded bacterium composite functional material, magnetic biochar (MBC) is used as a carrier to load and fix Achromobacter denitrificans BP1 (Achromobacter denitrificans BP1, the NCBI login number is CP154792), and a magnetic biochar-loaded functional bacterium (MBC-coated BP1) is obtained. The invention relates to a water and soil purifying agent which is used for removing pollutants in water and / or soil, the pollutants comprise polycyclic aromatic hydrocarbons (PAHs) and / or heavy metals (HM) and the like, benzo [a] pyrene (BaP) and phenanthrene (Phe) in the soil can be efficiently degraded, Cr (VI) is removed, nitrate (NO3 <->) is metabolized, the soil nutrient level (organic matters, nitrogen, phosphorus and the like) can be increased, the diversity and structural functions of soil microbial communities are improved, and the water and soil purifying agent can be used for purifying water and / or soil. And a green and efficient repairing material and a technical support are provided for a compound pollution complex site.

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 preparation of a polycyclic aromatic hydrocarbon-based pre-sodium modification agent and application of the pre-sodium modification agent in a hard carbon negative electrode, and belongs to the technical field of negative electrodes of sodium-ion batteries. The chemical property of polycyclic aromatic hydrocarbon is adjusted by virtue of induction and conjugation effects, and the pre-sodium-modification agent with controllable chemical reaction rate is prepared and applied to the hard carbon negative electrode. Firstly, in an ether-based solvent, polycyclic aromatic hydrocarbon molecules are selected to be grafted with functional groups with different electronegativity to serve as electron acceptors, the electron acceptors and metal sodium are subjected to free radical reaction, and a pre-sodium agent is obtained and used for efficient pre-sodium. By selectively adjusting the reducibility of the pre-sodium modification agent and assisting the generation of a high-stability interface film, the damage to the internal structure of the negative electrode and the excessive sodium modification are avoided. According to the preparation process, the pre-sodium modification agent can be obtained only through one-step stirring, and the electrode is soaked to achieve pre-sodium modification. The method has the advantages of simplified steps, simple equipment and good repeatability, and is suitable for large-scale production.

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.

The invention relates to aromatic targeting colloid biochar and a preparation method and application thereof, and the method comprises the following steps: taking cellulose-treated crop straws or saccharification residues as raw materials, and carrying out anaerobic pyrolysis to obtain an aromatic biochar template; performing low-temperature air thermal oxidation on the aromatized biochar template to obtain modified biochar; carrying out ball milling on the modified biochar to obtain aromatic targeting colloid biochar; the aromatic targeting colloid biochar is applied to targeted adsorption of polycyclic aromatic hydrocarbon in anionic surfactant leacheate. Compared with the prior art, on the basis that the stability and aromaticity of the hot air oxidation modified biochar are reserved, the biochar is endowed with colloidal characteristics, and efficient targeted adsorption of polycyclic aromatic hydrocarbon in the anionic surfactant leacheate is achieved.

The present invention provides a composite bacterial community for degrading polycyclic aromatic hydrocarbons and its application, belonging to the field of microbial technology. The composite bacterial community of the present invention comprises Fusarium solani E1 and Rhodococcus erythroxysporum E2; the preservation number of Fusarium solani E1 is CGMCC No: 41063, and the preservation number of Rhodococcus erythroxysporum E2 is CGMCC No: 29266. The present invention combines fungi and bacteria to synergistically degrade PAHs in the repair of PAHs. The composite bacterial community has better PAHs degradation effect and composite bacterial growth status than single bacteria, and has good effects on the degradation of high- and low-ring PAHs.

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 present disclosure proposes a microbial based composition for the bioremediation of polycyclic aromatic hydrocarbons. The microbial based composition is utilised for bioremediation of polluted / contaminated marine sites. The microbial based composition can be effectively utilised on sea surfaces at low pressure and deep-sea high pressure conditions for remediation of oil spills.

A method for repairing soil polluted by polycyclic aromatic hydrocarbons (PAHs) through a small molecule acid reinforced nZVI / H2O2 system comprises the steps that nZVI, OA and H2O2 are added into the soil polluted by PAHs, the water-soil ratio is fixed, full oscillation is conducted for 0.1-3 hours at the normal temperature, and then polluted soil repairing is completed. According to the method, nZVI, OA and H2O2 are combined to achieve a good degradation effect on soil polluted by PAHs, operation is easy, and the method is suitable for large-scale application and popularization. According to the method, the defect that nZVI is prone to passivation is overcome by adding OA, Fe (II) in the nZVI is dissolved out, circulation of Fe (II) / Fe (III) in a reaction system is promoted, the utilization rate of H2O2 is high, the generation amount of HO. Is remarkably increased, the reaction time is greatly shortened, and efficient removal and mineralization of PAHs in the contaminated soil are achieved while the agent dosage is reduced. The method can be quickly and efficiently carried out at normal temperature and normal pressure without adjusting the pH value of soil.

The invention belongs to the technical field of analysis and detection, and discloses a method for detecting four polycyclic aromatic hydrocarbons in vegetable oil through gas chromatography-tandem mass spectrometry. According to the method, a saponification and degreasing method and dispersive liquid-liquid microextraction (DLLME) are organically combined, so that sample pretreatment is effectively simplified, and the advantages of high selectivity and stable isotope internal standard quantification of gas chromatography-tandem mass spectrometry (GC-MS / MS) are combined; a novel method for detecting four important polycyclic aromatic hydrocarbons (PAH4) including benzo (a) pyrene (BAP), benzo (a) anthracene (BAA), benzo (b) fluoranthene (BBF) and chrysene (CHR) in common edible vegetable oil is established. According to the method, the sample pretreatment is simple and rapid, the personnel environment is relatively friendly, and the detection limit and the accuracy can meet the requirements of monitoring PAH4 in common edible vegetable oil.

The invention provides mesophase pitch and a preparation method thereof, and relates to the technical field of deep processing of petroleum. The method comprises the following steps: by taking aromatic hydrocarbon-rich heavy oil as a raw material, introducing a proper cross-linking agent, synthesizing an oligomer with a weak magnetic triarylmethane structure through low-temperature catalytic polycondensation reaction, enriching and separating the oligomer with the triarylmethane structure by matching with a strong magnetic field under the condition of negative pressure, and then taking the aromatic hydrocarbon-rich heavy oil as a raw material to synthesize the aromatic hydrocarbon-rich heavy oil. And introducing an oil-soluble fluorine-containing complex as a catalyst, and promoting further polycondensation of the oligomer with the triarylmethane structure through a two-stage catalytic polycondensation reaction under a negative pressure condition to form polycyclic aromatic hydrocarbon macromolecules with high molecular weight. According to the process, a triarylmethane structure is successfully introduced into mesophase pitch molecules, so that the spatial configuration and the stacking state of the pitch molecules are improved, and the spinning performance of the mesophase pitch and the mechanical property of the carbon fiber are remarkably improved.

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 belongs to the technical field of organic pollution treatment, and relates to a persistent saline-alkali soil organic pollutant polluted soil remediation material and a remediation method. The bamboo charcoal and the graphene oxide are used for modifying the soybean straw biochar, then the modified soybean straw biochar is mixed with the enzyme liquid, and the repairing material is prepared under the action of the cross-linking agent, so that the content of nitrochlorobenzene, trichloroethylene and / or polycyclic aromatic hydrocarbon in the organic contaminated soil is remarkably reduced. The remediation material disclosed by the invention has a very good remediation effect on organic pollutants in contaminated soil, can be suitable for saline-alkali soil with various different organic pollution levels, has a good degradation effect, and has a relatively high application prospect in the aspect of remediation of the organic pollutants in the soil.

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.