33 results about "Methyl green" patented technology

The invention provides a method for measuring the content of trace cadmium in rice by utilizing a flame atomic absorption spectrometry. The method is characterized by comprising the following steps of preprocessing a rice sample by utilizing a microwave digestion manner in which a long-time soaking manner is combined with a step type heating manner, after the digestion, reacting cadmium ions with potassium iodide to generate CdI4<2->, reacting the CdI4<2-> with methyl green (MG) to generate a hydrophobic ionic association compound, extracting the hydrophobic ionic association compound into a micelle phase of a TritonX-114 nonionic surfactant, and measuring the cadmium content in the micelle phase by utilizing the flame atomic absorption spectrometry. The method solves the problems that the measurement of the trace cadmium by utilizing a traditional flame atomic absorption spectrometry is low in sensitivity and is easily interfered by matrixes and has the advantages of high precision and recovery rate, small relative standard deviation, accuracy, reliability, rapidness and convenience.

The invention relates to a sulfide detection method and device. A sulfide is acidized to be converted into hydrogen sulfide so as to be separated from the complex matrix; the inert gas (nitrogen) serves as a carrier gas to carry generated hydrogen sulfide out and to enable hydrogen sulfide to enter a gas passage; when hydrogen sulfide meets filter paper which is placed in the gas passage and adsorbing a reagent (methyl green) that has selective response to hydrogen sulfide, the released hydrogen sulfide gas is gathered on the filter paper and react with methyl green; after reaction, methyl green on the filter paper turns from dark green to light green or colorless. The intensity of an optical signal is recorded in real time, the sulfide measurement process is simplified, and the interference on measurement from the complex matrix in which the endogenous sulfide is located is reduced. As the hydrogen sulfide gas is gathered on the filter paper, the detection limit is lowered, the detection sensitivity is improved and the relative running cost is low.

The invention discloses fade resisting Miao embroidery raw material dye and a dyeing method thereof. A formula of the fade resisting Miao embroidery raw material dye is prepared from 45 to 60 parts of dye and 28 to 47 parts of an auxiliary agent. The dyeing method of the fade resisting Miao embroidery raw material dye comprises the following steps: S1, preparing an original piece; S2, preparing colorization; S3, blending dye; S4, colorizing cloth; S5, carrying dye fixing on the cloth; S6, dehydrating the cloth. The dye disclosed by the invention is prepared from seaweed meal, fish meal, herba houttuyniae, haematine and methyl green, and the auxiliary agent is prepared from a preservative, an anti-settling agent, a wetting agent and a mordant, so the cloth rendered by the dye has the effects of high efficiency, freeze resistance, corrosion resistance and good colorizing effect, and the color and luster retention time of an original Miao embroidery piece is long; in the dye fixing process of the cloth, repeated rolling compaction is needed and water temperature is continuously reduced during rolling compaction, so that the cloth cannot easily fade after the cloth is colorized and can keep bright color for a long time; the dye is worthy of being popularized.

The invention discloses a natural low-carbon dye which is composed of, by weight, 14-16 parts of basic fuchsin, 23-26 parts of methyl green, 31-33 parts of basic azaleine, 10-16 parts of sodium citrate, 13-18 parts of ferric ion, 2-5 parts of alginic acid, 10-12 parts of bean sprout powder, 17-20 parts of fish meal, 11-18 parts of seed liquid, 21-24 parts of kudzu powder, and 9-10 parts of houttuynia cordata. The natural low-carbon dye is natural and odor-free, can quickly coloring an object and is not liable to discolor.

The invention discloses a method for identifying the purity of corn seeds. Compared with the prior art, by adjusting the concentrations of acrylamide and N,N-methylene bisacrylamide (MBA) in the method, for the method, the toughness and the rigidity of separation gel sheets are greatly improved; stacking gel is omitted, electrophoretic velocity is slowed down by reducing the voltage, and proteins with different molecular weights can be gathered on the same horizontal line before entering separation gel; methyl green AR-0721 is screened out in the method, and the migration rate of the methyl green AR-0721 is synchronous with the migration rate of protein molecules, thus being convenient to check whether the test procedure is finished; the sample extracting temperature and dyeing conditions are improved, the extraction and identification time is greatly shortened, the identification efficiency is improved, and the fixed procedure of the separation gel is simplified at the same time; the cleaning and storing procedures of the separation gel sheets are added, a cleaning solution and a storage solution are developed, and both the test result identification and the separation gel sheet storage are convenient.

The invention relates to a method for determining a detergent in electroplating wastewater by methyl green photometry. The method is characterized by including the following steps of: (1) preparing a methyl green water solution with a concentration of 2.5g/L, a buffer solution, chloroform, an oscillator, an ultraviolet/visible spectrophotometer, a separating funnel, and a volumetric flask; (2) using chloroform for first extraction; (3) using chloroform for secondary extraction; and (4) utilizing the ultraviolet/visible spectrophotometer to determine the detergent content. By utilizing the methyl green water solution for determining the detergent content in the electroplating wastewater, the method of the invention makes the determined deviation less than 6% and the sample solution labeling recovery rate range from 92.9% to 103%, and is characterized by simplicity, accuracy and reliability.

The invention discloses an environment-friendly dye. The environment-friendly dye is prepared from the following ingredients in parts by weight: 14 to 16 parts of methylene blue, 23 to 26 parts of methyl green, 31 to 33 parts of basic fuchsin, 10 to 16 parts of sodium citrate, 13 to 18 parts of ferric ion, 2 to 5 parts of alginic acid, 10 to 12 parts of bean sprout powder, 17 to 20 parts of fish meal, 11 to 18 parts of seed solution, 21 to 24 parts of arrowroot flour and 9 to 10 parts of herba houttuyniae. The environment-friendly dye disclosed by the technical scheme of the invention has theadvantages of naturalness, no peculiar smell, quickness in coloring and no easiness in fading.

The invention belongs to the technical field of organic synthesis and biological mercaptan detection, and particularly relates to a dansyl derivative fluorescent probe as well as a synthesis method and application thereof. The synthesis method of the fluorescent probe comprises the steps: dropwise adding a trichloromethane solution of dansyl chloride into a trichloromethane solution containing bromo-substituted alcohol and triethylamine in an inert atmosphere at room temperature, stirring and reacting at room temperature after the dropwise addition is finished, washing and drying a reaction solution after the reaction is finished, evaporating to remove a solvent, separating and purifying a reactant through column chromatography, and thus obtaining the dansyl derivative fluorescent probe. The fluorescence probe and methyl green-pyronin Y are used as a double-fluorescence probe, and a supermolecular proportional fluorescence sensing platform is constructed by utilizing the solubilizationeffect of a surfactant CTAB and is used for selectively detecting H2S.

The invention discloses an improved mycobacterium tuberculosis rapid anti-acid fluorescence staining reagent comprising two reagents: an A liquid, comprising pure water, NaCl or KCl, dimethyl sulfoxide, glycerol and auramine O; and a B liquid, comprising pure water, hydrochloric acid, ethanol, and methyl green or Evans blue. Through formula optimization, auramine O fluorescence staining method isimproved and optimized, and a double-reagent type mycobacterium tuberculosis rapid anti-acid fluorescence staining reagent is developed in the invention, by which staining is completed just through two steps, and staining time is reduced from 20 min, in conventional processes, to about 2 min. The staining reagent is more convenient and quick to apply clinically and greatly increases the detectionefficiency of the mycobacterium tuberculosis.

The invention discloses environment-friendly dye and a preparation method thereof. The environment-friendly dye is prepared from, in percentage, 30-40% of carbonate, 10%-20% of potassium hydroxide, 7%-15% of sodium oxalate, 4%-8% of methyl green, 5%-10% of basic fuchsin, 2%-5% of alginic acid, 1%-4% of arrowroot powder, 2%-5% of houttuynia cordata, 1%-3% of ramulus et uncus uncariae, 2%-4% of glycolic acid, 3%-5% of a composite halogen-free flame retardant, an anti-ultraviolet agent and a waterproof agent. The compound halogen-free flame retardant, the anti-ultraviolet agent and the waterproofagent are added to the formula, so that fire resistance, the anti-ultraviolet property and the waterproof property of the environment-friendly dye can be effectively improved, and accordingly, marketcompetitiveness of the environment-friendly dye is expanded; meanwhile, the preparation method of the dye is simple, so that the production cost is reduced, and the environment-friendly dye is in line with own interests of enterprises.

The invention discloses a basic dye, which is composed of the following components in parts by weight: 14-16 parts of lichen red, 23-26 parts of methyl green, 31-33 parts of basic fuchsin, citron 10-16 parts of sodium acid, 13-18 parts of iron ion, 2-5 parts of alginic acid, 10-12 parts of bean sprouts powder, 17-20 parts of fish meal, 11-18 parts of seed liquid, 21-24 parts of arrowroot powder and Houttuynia cordata 9‑10 servings. The invention has the advantages that: the basic dye of the technical proposal has no peculiar smell naturally, fast coloring and not easy to fade.

The invention discloses a natural alkaline dye which consists of the following components in part by weight: 23-26 parts of acid fuchsin, 14-16 parts of methylene blue, 23-26 parts of methyl green, 10-16 parts of sodium citrate, 13-18 parts of iron ions, 2-5 parts of alginic acid, 10-12 parts of bean sprout powder, 17-20 parts of fish meal, 11-18 parts of seed solution, 21-24 parts of arrowroot powder and 9-10 parts of herba houttuyniae. The natural alkaline dye disclosed by the invention has the advantages that the natural alkaline dye in the technical scheme is natural, odor-free, fast to dye and hard to fade.

The invention provides a magnetic polymer nanometer adsorption material LM‑MP and its preparation method and application. The adsorption material can efficiently adsorb cationic dye pollutants, and the synthesis method of the adsorption material is simple and low in cost. LM-MP was characterized by scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, thermogravimetry, Zeta potential and other methods, and it was confirmed that Fe was grafted into the linear maltodextrin-pyromellitic dianhydride crosslinked polymer. ₃ o ₄ Magnetic nanoparticles, and have good magnetic properties. The adsorption material has large specific surface area, abundant hydroxyl and carboxyl groups and excellent superparamagnetic properties, and can be used as an adsorption material for cationic dye pollutants in aqueous solution. Using methyl green, malachite green, methyl violet, and ethyl violet dyes as model molecules to study the adsorption performance, it shows that the material can efficiently adsorb cationic organic dyes, and can be recycled without reducing the adsorption efficiency. It has application prospects in the aspect of environmental pollutant adsorption materials.

The invention discloses alkaline battery coating. The alkaline battery coating is prepared from the following components in parts by weight: 14 to 16 parts of erythrin, 131 to 133 parts of Congo red,123 to 126 parts of methyl green, 61 to 83 parts of basic fuchsin, 13 to 18 parts of iron ions, 2 to 5 parts of alginic acid, 17 to 20 parts of fish meal, 40 to 50 parts of seed liquid, 21 to 24 partsof radix puerariae powder and 9 to 10 parts of herba houttuyniae. The alkaline battery coating disclosed by the invention has the advantages that the alkaline battery coating is natural and has no undesirable odor, is easy to color and is not easy to fade.

The invention discloses non-toxic dye, which is prepared from the following ingredients in parts by weight: 14 to 16 parts of hematoxylin, 23 to 26 parts of methyl green, 31 to 33 parts of basic fuchsin, 10 to 16 parts of sodium citrate, 13 to 18 parts of iron ions, 2 to 5 parts of alginic acid, 10 to 12 parts of bean sprout powder, 17 to 20 parts of fish meal, 11 to 18 parts of seed liquid, 21 to24 parts of arrowroot flour and 9 to 10 parts of herba houttuyniae. The non-toxic dye has the advantages that the non-toxic dye using the technical scheme is natural; no foreign smell exists; the coloring is fast; the color fastness is realized.

The invention provides a coating with a frosting effect and relates to the technical field of building coatings. The coating comprises the following composition materials in parts by weight: 30-40 parts of pure acrylic elastic emulsion, 15-23 parts of polyacrylic emulsion, 7-15 parts of nano zinc oxide, 8-16 parts of sodium stearate, 2-8 parts of carbon black, 13-19 parts of rosin, 14-19 parts ofparaffin, 5-15 parts of asphalt, 9-17 parts of sebacic acid dihydrazide, 11-19 parts of sodium silicate, 11-19 parts of sodium silicate, 3-9 parts of methyl orange, 5-12 parts of methyl green, 15-20 parts of calcium chloride, 8-15 parts of butyl acetate, 4-14 parts of ethyl cellulose, 5-12 parts of a filler, and 4 parts of sand. The coating provided by the invention has the advantages of having certain personalization and hand feeling.

The invention discloses composite alkaline battery coating. The composite alkaline battery coating is prepared from the following components in parts by weight: 14-16 parts of orcein, 131-133 parts ofcongo red, 23-26 parts of methyl green, 61-83 parts of basic fuchsin, 13-18 parts of iron ions, 2-5 parts of alginic acid, 17-20 parts of fish meal, 40-50 parts of seed solution, 21-24 parts of arrowroot powder and 9-10 parts of herba houttuyniae. The composite alkaline battery coating has the advantages that the composite alkaline battery coating provided by the technical scheme is nature, freeof undesirable smell, rapid to color and not prone to fading.