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267 results about "Trace metal" patented technology
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Trace metals are the metals subset of trace elements; that is, metals normally present in small but measurable amounts in animal and plant cells and tissues and that are a necessary part of nutrition and physiology. Many biometals are trace metals. Ingestion of, or exposure to, excessive quantities can be toxic. However, insufficient plasma or tissue levels of certain trace metals can cause pathology, as is the case with iron.
Organoaminosilane precursors and methods for depositing films comprising same
ActiveUS20150087139A1Low temperature efficientlySilicon organic compoundsOrganic compound preparationSilanesPhysical chemistry
Described herein are precursors and methods for forming silicon-containing films. In one aspect, the precursor comprises a compound represented by one of following Formulae A through E below:In one particular embodiment, the organoaminosilane precursors are effective for a low temperature (e.g., 350° C. or less), atomic layer deposition (ALD) or plasma enhanced atomic layer deposition (PEALD) of a silicon-containing film. In addition, described herein is a composition comprising an organoaminosilane described herein wherein the organoaminosilane is substantially free of at least one selected from the amines, halides (e.g., Cl, F, I, Br), higher molecular weight species, and trace metals.
Owner:VERSUM MATERIALS US LLC
Preparation of recombinant factor VIII in a protein free medium
InactiveUS6171825B1Eliminate and at least greatly reduce riskImprove productivityFactor VIICulture processFactor iiManganese
Recombinant Factor VIII can be produced in relatively large quantities on a continuous basis from mammalian cells in the absence of any animal-derived proteins such as albumin by culturing the cells in a protein free medium supplemented with polyol copolymers, preferably in the presence of trace metals such as copper. In very preferred embodiments, the medium includes a polyglycol known as Pluronic F-68, copper sulfate, ferrous sulfate / EDTA complex, and salts of trace metals such as manganese, molybdenum, silicon, lithium and chromium. With an alternative medium which included trace copper ions alone (without polyol copolymers) we were also able to enhance the productivity of Factor VIII in recombinant cells such as BHK cells that are genetically engineered to express Factor VIII.
Owner:BAYER HEALTHCARE LLC +1
Plasma based trace metal removal apparatus and method
A system and method for the removal of metals such as mercury from a gas stream. The method involves contacting a gas stream containing the target metals with reactive chemical species generated in a plasma device. The metal to be removed is chemically converted into forms enabling capture in either conventional particulate removal devices or in a wet scrubber for the capture of a soluble chemical species.
Owner:CONTINENTAL RES & DEV
Free radical quenching composition and a method to increase intracellular and/or extracellular antioxidants
A free radical quenching composition is disclosed comprising a liposome containing at least two antioxidants selected from the following group: beta-carotene, vitamin E, vitamin C, glutathione, niacin, and optionally at least one trace metal (Zn, Se, Cr, Cu, Mn). Also disclosed is a method for reducing the undesirable side effects of free radicals in a mammal by administering to a mammal in need of such antioxidants an effective amount of liposomes containing at least two antioxidants.
Owner:AMAOX
Methods for removal of impurity metals from gases using low metal zeolites
InactiveUS6395070B1High silica-to-alumina ratioReduce metal contentGas treatmentMolecular sieve catalystsBoiling pointTrace metal
A method for removing trace moisture from a gas is disclosed. The method involves heating a zeolite having a high silica-to-alumina ratio to about 400° C. to remove physically adsorbed water from the zeolite, followed by heating the zeolite to a temperature in excess of 650° C., to form a superheated zeolite. The superheated zeolite is contacted with the gas, thereby adsorbing water from the gas. A dehydroxylated zeolite for removing trace moisture from a gas wherein the zeolite has a high silica-to-alumina ratio and a low level of metallic impurities is also disclosed. A method for removing metallic impurities from a gas using the low metals zeolite is also disclosed. The zeolites and methods of the invention are particularly useful for removing trace water and trace metal impurities from acid gases such as hydrogen chloride and hydrogen bromide.
Owner:MATHESON TRI GAS INC
Technical and economic optimization of combustion, nitrogen oxides, sulfur dioxide, mercury, carbon dioxide, coal ash and slag and coal slurry use in coal fired furnaces/boilers
InactiveUS7553463B2Minimal equipment costLow costNitrogen compoundsUsing liquid separation agentParticulatesWater use
Methods by which new or used boilers or furnaces ranging from small industrial to the largest utility units that are designed for coal or oil or natural gas or shredded waste or shredded biomass firing can substantially improve their technical operation and sharply reduce their capital and operating costs by implementing component modifications and process steps that (a) minimize the adverse impacts of coal ash and slag on boiler surfaces and particulate emissions thereby also facilitating the use of oil or gas designed boilers for coal firing, (b) drastically reduce the loss of water used to transport coal in slurry form to power plants, (c) essentially eliminate the combined total nitrogen oxides (NOx), sulfur dioxide (SO2), mercury (Hg), trace metals, and carbon dioxide (CO2) emissions, (d) separate and permanently sequester carbon dioxide released during combustion and (e) improve the coal and solid fuel combustion efficiency.
Owner:ZAUDERER BERT
Reduced trace metals contamination ion source for an ion implantation system
ActiveUS20150179393A1Reduce decreaseElectric discharge tubesMaterial analysis by optical meansHigh energyTrace metal
An ion source chamber for ion implantation system includes a housing that at least partially bounds an ionization region through which high energy electrons move from a cathode to ionize gas molecules injected into an interior of the housing; a liner section defining one or more interior walls of the housing interior, wherein each liner section includes a interiorly facing surface exposed to the ionization region during operation the ion implantation system; a cathode shield disposed about the cathode; a repeller spaced apart from the cathode; a plate including a source aperture for discharging ions from the ion source chamber; wherein at least one of the repeller, the liner section, the cathode shield; the plate, or an insert in the plate defining the source aperture comprise silicon carbide, wherein the silicon carbide is a non-stoichiometric sintered material having excess carbon.
Owner:AXCELIS TECHNOLOGIES
Electrodialysis method and apparatus for trace metal analysis
InactiveUS20050051485A1Accurate and substantially real-time analysisNeutralizing and modifying and eliminating matrixElectrolysis componentsVolume/mass flow measurementElectricityTrace metal
An electrodialysis method and apparatus are provided for treating a sample including trace metals in a matrix. Advantageously, the present invention allows for highly accurate detection of trace contaminants in a solution sample, in particular trace metals, substantially in real-time and on-line. The present invention includes flowing a carrier solution through a carrier solution channel separated from a sample channel by a membrane. A component of the carrier solution is diffused through the membrane into the sample channel to stabilize trace metals in the solution sample for subsequent analysis. Simultaneously, the matrix is eliminated, neutralized, and / or modified for enhanced analysis.
Owner:METARA
Electrochemical sensor for detection and quantification of trace metal ions in water
InactiveUS20010042693A1Guaranteed economic efficiencyIncrease productionWeather/light/corrosion resistanceVolume/mass flow measurementTrace metalMetal
A thick film electrochemical micro-sensor apparatus for detection and quantification of trace metal ions in water, comprising a substrate to which is applied an arrangement of electrodes comprising at least one of a first type of working electrode, at least one of a second type of working electrode, a counter electrode, a reference electrode, and optionally pH and temperature detectors. The apparatus is especially useful for detection and quantification of trace metal ions in water and effluent. A method of detecting and quantifying trace metal ions using the electrochemical micro-sensor apparatus is also described comprising contacting the water or effluent with the sensor of the present invention, applying a voltage selected for the trace metal ion to be detected, measuring the current output of the micro-sensor, determining if the current output indicates the presence of the trace metal ion, and generating a signal.
Owner:HATHAWAY BROWN SCHOOL
Method for ultrasonic cleaning of a working electrode in electrochemical cell useful for automated trace metals measurement
ActiveUS20080017523A1Reduced effectivenessFully removedPhysical/chemical process catalystsWeather/light/corrosion resistanceTrace metalAcoustic wave
Methods for cleaning and regenerating a working electrode in an electrochemical cell; method for measuring the concentration of a metal in a liquid sample in an electrochemical cell having a working electrode, the method including a step for cleaning and / or regenerating the electrode; and an assembly having an ultrasonic device in sonic communication with an electrochemical cell.
Owner:AMS TRACE METALS INC
Method of detecting heavy metal lead, cadmium, arsenic and copper in TCM (Traditional Chinese Medicine) tablet
ActiveCN104697983AAvoid pollutionAvoid dangerAnalysis by thermal excitationTrace metalAlkaline hydrolysis
The invention discloses a method of detecting heavy metal lead, cadmium, arsenic and copper in a TCM (Traditional Chinese Medicine) tablet. The method comprises the following steps: after carrying out microwave alkaline hydrolysis on tablet powder with an ammonia chloride containing diluted alkali solution, quickly adding hydrogen peroxide containing dilute acid solution, and ultrasonically extracting after the pH value is adjusted to be not more than 2; carrying out constant volume on an extract after the centrifugation, condensation and microfiltration; and finally, determining by adopting an atomic absorbency method. According to the method, a sample is preprocessed by an alkaline-hydrolysis acid-extracting method, therefore, the loss of heavy metal element caused by high temperature of a dry ashing method and air pollution and potential danger caused by a resolution method can be prevented; meanwhile, the method has the advantages of being good in recovery rate, high in precision, fast in processing speed, convenient to operate, wide in range of application and the like, and is more suitable for the quantitative determination of trace metal elements.
Owner:金木集团有限公司
Modified human serum albumin with reduced or eliminated affinity to chemical or biological contaminants at Cys 34
InactiveUS20060018859A1Reducing a wide variety of undesired chemical reactionsReducing and eliminating undesirable incorporationCosmetic preparationsPeptide/protein ingredientsAmino acid deficiencyHypersensitive response
A modified serum albumin is provided which has been modified at position cysteine 34 of human serum albumin, or at equivalent locations in other mammalian serum albumins, with an amino acid which lacks a sulphydryl group and will thus be less reactive with biological or chemical molecules such as trace metals at this site. Particularly suitable amino acids to substitute for cysteine at position 34 include methionine and other amino acids which are less reactive than cysteine and which maintain the same folding and antigenicity of the native serum albumin. The modified albumin of the present invention is advantageous in that it is binding to trace metals and other contaminants is reduced or eliminated, and it can thus be used more safely and effectively than unmodified albumin with a reduced or eliminated likelihood of causing an allergic reaction in the human being treated with the albumin composition.
Owner:CARTER DANIEL C
ICP-MS measuring method of trace metal impurities in high purity lead
InactiveCN101551357AEasy to operateAvoid pollutionMaterial analysis by electric/magnetic meansTotal solid contentMinor metals
The invention relates to an ICP-MS measuring method of trace metal impurities in high purity lead, which adopts a high-purity nitric acid dissolving sample and uses the electrolytic method to remove lead in the high purity nitric acid dissolving sample, and utilizes inductive coupled plasma mass spectrometer and adopts peak jumping mode to scan and test blank, work-curve standard solution and sample elements to be detected so as to obtain the content of the elements to be detected. The ICP-MS measuring method of trace metal impurities in high purity lead is convenient in operation and can effectively eliminate matrix effect caused by excessively high total solid content and avoid pollution during the preparation process of samples, thus greatly reducing memory effect and obviously increasing measuring accuracy. The ICP-MS measuring method of trace metal impurities in high-purity lead is applicable to the analysis and testing of the content of a plurality of trace metal impurities.
Owner:NO 53 RES INST OF CHINA NORTH IND GRP
Method and device for detecting trace metal elements in water body by using laser-induced breakdown spectroscopy assisted by direct current discharging vaporization
ActiveCN104237178ARealize detectionIncrease concentrationAnalysis by material excitationDirect-current dischargeTrace metal
The invention discloses a method and a device for detecting trace metal elements in a water body by using the laser-induced breakdown spectroscopy assisted by direct current discharging vaporization. High voltage direct current discharging is utilized to vaporize a liquid sample, the vaporized sample is separated through a separation device, gas is injected to a graphite bearing piece, the graphite bearing piece containing elements to be detected is subjected to pulse laser ablation induction to generate plasma and transmit spectroscopy signals, and finally a spectrograph is utilized to conduct detection analysis to measure the trace metal in the water body. By means of the method and the device, the pulse laser sample ablation efficiency is greatly improved, the detected spectroscopy signals are greatly strengthened, the detection sensitivity is improved, the detection limit of the metal elements is reduced, and the method is feasible for online high-efficiency quick detection of the metal elements in the water body.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Cosmetic or pharmaceutical composition for skin care
InactiveUS20060039887A1Reduce skin damageIncrease enzyme activityBiocideCosmetic preparationsTrace metalSuperoxide dismutase
The present invention relates to a cosmetic or pharmaceutical composition to reduce skin damage caused by aging and / or the environment. The composition can include a genus Centipeda plant extract, a trace metal source in a skin absorbing form in an amount effective for activating or enhancing superoxide dismutase enzyme, and a carrier suitable for topical administration. The compound may alternatively include a genus Centipeda plant extract and a low molecular weight transporter and an ion-pair delivery system including a donating composition and an accepting composition, wherein the donating composition and the accepting composition are combined to form a bound ion-pair, and a carrier suitable for topical administration.
Owner:INFINITY2
Electrochemical analysis device adopting nano boron-doped diamond film electrode and its uses
InactiveCN101149356AReduce usageIt has the characteristics of green environmental protectionMaterial electrochemical variablesElectrolysisTrace metal
The electrochemical analysis device and its application of the diamond membrane electrode of the nanometer mixed with the boron are used to detect the heavy metal ion with high sensitivity. It includes the electrolysis, the working station and data collecting and controlling system. The electrolysis system is made up of the electrolysis pool with the single room structure, the electrode frame and the working electrode fixed on the electrode frame, the assistant electrode, the reference electrode. The working electrode is the diamond membrane electrode of the nanometer mixed with the boron. The three electrodes are connected with the electrochemical analyzer by the electrode line. The data collecting and controlling system is the computer installed with the electrochemical analyzer. The device has avoided using the electrode containing the hydrargyrum and improved the detection sensitivity, the detection limit can reach 10-9mol / L and it has good repeatability. The detection process does not need to remove oxygen by giving nitrogen; also it can reach the renovation on the electrode surface. The invention can detect many trace metal ion in sample at the same time.
Owner:TONGJI UNIV
Biogas fermentation accelerant and preparation method thereof
InactiveCN103255179AThe promotion effect is obviousWaste based fuelFermentationChemical oxygen demandTrace metal
The invention discloses a preparation method of a biogas fermentation accelerant. The fermentation accelerant comprises trace metal elements such as Fe, Co, Ni and Zn. The preparation method comprise the following steps of preparing a thick salt solution in a chloride form; adding quantified thick salt solution into a fermenting methane pool every day, then stirring for well mixing the metal elements in fermentation liquor. The accelerant has good effect for biogas fermentation taking cow dung, pig manure and sheep manure as raw materials, and has good immediate effect on methanogens in biogas fermentation; if the accelerant is added in biogas fermentation, the methane yield can be improved and the methane content of the methane can be improved, the removal rate of COD (chemical oxygen demand), TS (thymidylate synthase) and VS can be obviously improved, and the accelerant has good prospect for promotion and application of the biogas fermentation.
Owner:SHIHEZI UNIVERSITY
Trace metal element Chelation fertilizer in lignin and application thereof
InactiveCN101941860AStrong chelating abilityGood fertilizer effectFertilizer mixturesStability parameterTrace metal
The invention provides a trace metal element chelation fertilizer in lignin and application thereof. The trace metal element chelation fertilizer in the lignin is a mixture of lignosulfonate and metal element chelates and shows the following physical-chemical characteristics of: 1, appearance: white powder; and 2, stability parameters of chelate: the average coordination number x is between 0.9 and 1.95 and the stability constant 1gK is between 0.6 and 2.10; and 3, the metallic chelation rate is 10 to 13.55 percent. The lignosulfonate-metal element chelation fertilizer is prepared by performing oxidative modification reaction on paper-making waste liquid lignosulfonate and metal elements such as iron, zinc and copper which serve as raw materials, and the chelation property of lignin ammonium is quantitatively described by measuring the stability of the chelates of lignin ammonium-Fe and lignin ammonium-Zn. The industrial lignin and the metal elements form the 'lignin-metal elements' chelates, and the obtained chelates are dried to form solid products or the obtained chelates after proper concentration can be mixed with other kinds of fertilizers to prepare various compound fertilizers.
Owner:SHENZHEN BATIAN ECOTYPIC ENG +1
Fiducial Marker for Correlating Images
InactiveUS20090048510A1Easy to analyzeX-ray spectral distribution measurementDiagnostic recording/measuringImaging modalitiesTrace metal
The invention relates to a fiducial marker having a marking grid that is used to correlate and view images produced by different imaging modalities or different imaging and viewing modalities. More specifically, the invention relates to the fiducial marking grid that has a grid pattern for producing either a viewing image and / or a first analytical image that can be overlaid with at least one other second analytical image in order to view a light path or to image different imaging modalities. Depending on the analysis, the grid pattern has a single layer of a certain thickness or at least two layers of certain thicknesses. In either case, the grid pattern is imageable by each imaging or viewing modality used in the analysis. Further, when viewing a light path, the light path of the analytical modality cannot be visualized by viewing modality (e.g., a light microscope objective). By correlating these images, the ability to analyze a thin sample that is, for example, biological in nature but yet contains trace metal ions is enhanced. Specifically, it is desired to analyze both the organic matter of the biological sample and the trace metal ions contained within the biological sample without adding or using extrinsic labels or stains.
Owner:BROOKHAVEN SCI ASSOCS
Pesticide microcapsule employing metal ion chelate of tannin as capsule wall and preparation method of pesticide microcapsule
ActiveCN104381251AEasy to degradeNo pollutionBiocideAnimal repellantsIn situ polymerizationPesticide residue
The invention discloses a pesticide microcapsule employing metal ion chelate of tannin as a capsule wall and a preparation method of the pesticide microcapsule, and belongs to the technical field of pesticides. The pesticide microcapsule disclosed by the invention comprises a capsule core and a capsule wall, wherein the pesticide is arranged at the capsule core. The pesticide microcapsule is characterized in that the metal ion chelate of tannin is taken as the capsule wall. The thickness (the thickness of the capsule wall is easy to adjust) of the capsule wall is adjusted by adding different quantities of capsule wall materials according to requirements; a polymer which is formed by the tannin and metal ions after being complexed is relatively easy to degrade on the plant surface or in the soil; complete release of the capsule core can be ensured; waste of the pesticide is avoided; and the pesticide residue caused by too long residual life is avoided. In addition, trace metal ions can be absorbed and utilized by plants, so that plant growth is facilitated. Compared with commonly used in-situ polymerization method and interfacial polymerization method at present, the method disclosed by the invention is available in raw materials, and safe to a producer; and the pesticide microcapsule disclosed by the invention is easy to degrade in an environment, and does not cause new pollution.
Owner:SHANDONG AGRICULTURAL UNIVERSITY
Preparation method of novel compost
InactiveCN106365714AMaximize the benefitsEnhances Digestive Processing CapacityBio-organic fraction processingExcrement fertilisersSludgeTrace metal
The invention discloses a preparation method of novel compost and relates to the field of preparation of agricultural fertilizer. The preparation method comprises: mixing sludge generated by sewage treatment and animal excrement; adding attapulgite and biomass charcoal; adding humic acid and waste vinasse; finally, adding auxiliary materials and spraying mixed bacterium liquid; adding mature earthworms and maturing compost; sieving; finally, detecting and packaging. According to the preparation method provided by the invention, the sludge and the animal excrement are treated by adopting a microorganism aerobic composting manner, so that harmlessness and recycling are realized; the earthworms are introduced in a treatment process, and the sludge, the animal excrement and the earthworms supplement one another; benefit maximization of fertilizer production is realized; loosening and digestion of the sludge and the animal excrement can be carried out through movement of the earthworms; a digestive treatment capability of a bacterium agent sprayed on the sludge and the animal excrement under aerobic conditions is enhanced; meanwhile, the earthworms, which are dead at a high-temperature condition, can also be used as fertilizer; the earthworms can absorb trace metals including mercury, lead, cadmium and the like in soil and the earthworms can be used for eliminating environmental pollution to a certain extent.
Owner:滁州朝昱农业科技有限公司
Electrolytic method and apparatus for trace metal analysis
InactiveUS20050241956A1Efficient and highly accurateEasy to analyzeElectrolysis componentsFrom normal temperature solutionsElectrolysisTrace metal
Owner:METARA
ICP-AES detection method for trace element content in lead concentrate
InactiveCN109827952AAccurate contentAccurate measurementAnalysis by thermal excitationTrace metalCobalt
The invention relates to an ICP-AES detection method for trace element content in a lead concentrate. The trace elements comprise copper, zinc, cadmium, tin, antimony, iron, aluminum, manganese, titanium, nickel, chromium and cobalt elements. The objective of the invention is to solve the problems that the detection of multiple metal elements in the lead concentrate is not accurate, specially themeasurement for the content of the trace metal elements is not accurate. The method comprises the steps of: preparing a sample solution; preparing a working curve standard solution of copper, zinc, cadmium, tin, antimony, iron, aluminum, manganese, titanium, nickel, chromium and cobalt, measuring the mass concentrations of the sample solution and a blank test solution; and calculating the contentof the copper, zinc, cadmium, tin, antimony, iron, aluminum, manganese, titanium, nickel, chromium and cobalt elements according to formulas. The measurement result is accurate, the detection range islarge, the content of multiple trace elements is accurately measured, and the ICP-AES detection method can be widely applied to official testing institutions or third-party detection.
Owner:滕亚君
Method for improving methane yield by organic waste water anaerobic fermentation
InactiveCN101157937AIncrease productionImprove bioavailabilityWaste based fuelFermentationChemical industryTransformation efficiency
The invention relates to a method used for raising the output of marsh gas by using anaerobic fermentation of organic effluent water, which pertains to the technical field of biological treatment of effluent water. The invention adopts simulated organic effluent water or practical wastewater from chemical industry as treatment objects, by adding trace metal element Co and metal ion chelating agent to an anaerobic reactor to improve the biological availability of trace metal elements which are essential for methanogen and promote the growth and activity of methanogen, thereby, methane output and transformation efficiency of contaminating material of the system is improved. The method needs only extreme micro-amount of trace metal element Co and metal ion chelating agent, therefore, the invention is not only convenient to be manipulated with high efficiency and but also low in cost which leads the invention to be extensively applicable in engineering practice.
Owner:JIANGNAN UNIV
Method for preservation of cells and nucleic acid targets
InactiveUS7029840B2Easy to detectStable maintenanceMicrobiological testing/measurementDead animal preservationTrace metalSodium fluoride
The present invention provides a method for preserving cells and nucleic acids in a sample by exposing the sample to a composition that causes an inhibitory affect on proteolytic agents and / or nucleic acid degradative agents in the sample. Such compositions that are useful in the method of the present invention include chelating agents such as sodium citrate, sodium borate, sodium fluoride and EDTA, that will bind trace metals necessary for proteolytic activity of proteolytic agents and / or nuclease activity of nuclease agents in a sample.
Owner:BECTON DICKINSON & CO
Preparation apparatus and preparation method for dialysis fluid of variable bicarbonate ion concentration type, dialysate of variable bicarbonate ion concentration type, and dialysis system of variable bicarbonate ion concentration type
ActiveUS20130168316A1Reduce mortality and hospitalization riskAmeliorate metabolic acidosisSemi-permeable membranesSolvent extractionSodium bicarbonateTrace metal
Technology for preparing a dialysis fluid capable of flexibly changing bicarbonate ion concentration and maintaining concentrations of electrolytes such as potassium, calcium, and magnesium at constant levels during dialysis according to the disease state of a patient. A three-component dialysate containing an agent S containing sodium chloride, an agent B containing sodium bicarbonate, and an agent A containing electrolyte components other than sodium chloride and sodium bicarbonate, with suitable adjustment of the amount of the agent B during dialysis fluid preparation maintains concentrations of trace metal ions such as potassium ions, calcium ions, and magnesium ions in a dialysis fluid at constant levels and flexibly changes the bicarbonate ion concentration therein. Adjusting the ratio between the amount of the agent S and agent B when the dialysate is used also makes it possible to maintain the sodium ion concentration at a constant level or flexibly change the sodium ion concentration.
Owner:TOMITA PHARMA
A method and device for measuring a trace metal ion concentration
ActiveCN106918567AReduce distractionsGuaranteed SensitivityColor/spectral properties measurementsComplex mathematical operationsHigh concentrationInformation quantity
A method and device for measuring a trace metal ion concentration are provided. The method includes S1) according to absorbance in a full waveband of a solution including a trace metal ion, acquiring an optimum wavelength zone in the full waveband by utilizing a root mean square error of prediction; and S2) acquiring an effective wavelength point for measuring the concentration of the trace metal ion in the optimum wavelength zone through a correlation coefficient process. Through adoption of an interval-correlation coefficient partial least squares process, sensitive zones of high-concentration matrix ions and a blank information zone are rapidly and efficiently removed, wavelength points which are high in nonlinearity, low in information quantity and masked by matrix ions are rejected, complete usable information of the trace ion to be detected is maintained to the utmost, interferences of the high-concentration matrix ions on the trace ion to be detected are reduced, sensitivity of the trace ion to be detected is maintained, the number of variables is reduced, and precision and real-time performance of a model are improved.
Owner:CENT SOUTH UNIV
A nutritional-type fertilizer and a preparation method thereof
The invention discloses a nutritional-type fertilizer. The fertilizer is prepared from following raw materials in parts by weight: 35-40 of gypsum, 25-30 of bentonite, 13-16 of diammonium phosphate, 10-13 of potassium fulvate, 1-2 of ammonium molybdate, 1-3 of copper sulfate, 1-2 of ferrous sulfate, 3-4 of boric acid, 2-3 of polyvinyl alcohol, 4-6 of chitosan, 3-7 of sodium alginate, 8-12 of a soil conditioner and a proper amount of water. The fertilizer adopts the potassium fulvate and plant essential nutrient elements as components. The ratio of the plant nutrients is reasonable. The fertilizer has characteristics of capability of allowing premature ripening and preventing premature senility for grain crops, vegetables, fruits and economic crops. The fertilizer prepared from the chitosan and the boric acid not only is capable of killing pests, preventing diseases for plants and functioning as a fertilizer, but also is capable of decomposing animal and plant residual bodies and trace metal elements, thus converting the residual bodies and the trace metal elements into nutrients for the plants, enhancing plant immunity and promoting plant health. The bentonite has strong moisture adsorption capability, and can absorb water having a volume of 8-20 times of the volume of the bentonite itself and swell to 30 times in volume. The bentonite has certain glutinousness, thixotropy and lubricity. The blend of the bentonite and silt has plasticity and caking property, and has strong cation exchange capability and adsorption capability.
Owner:MAANSHAN KEBANG ECO FERTILIZER
Advanced biologic water treatment using algae
ActiveUS8101080B2Improve bioavailabilityReduce suspended solidsTreatment using aerobic processesWater/sewage treatment by irradiationPolychlorinated biphenylCross-flow filtration
Owner:ALGEVOLVE
Separation purification process and application of anaerobic degradation pure culture of polycyclic aromatic hydrocarbon
InactiveCN101195811AGood anaerobic degradation performanceBacteriaContaminated soil reclamationVitamin CPurification methods
Owner:BEIJING NORMAL UNIVERSITY
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