1134 results about "Ethylenediaminetetraacetic acid" patented technology

A method for capturing and reducing the mercury content of an industrial flue gas such as that produced in the combustion of a fossil fuel or solid waste adds a chelating agent, such as ethylenediaminetetraacetic acid (EDTA) or other similar compounds like HEDTA, DTPA and/or NTA, to the flue gas being scrubbed in a wet scrubber used in the industrial process. The chelating agent prevents the reduction of oxidized mercury to elemental mercury, thereby increasing the mercury removal efficiency of the wet scrubber. Exemplary tests on inlet and outlet mercury concentration in an industrial flue gas were performed without and with EDTA addition. Without EDTA, mercury removal totaled 42%. With EDTA, mercury removal increased to 71%. The invention may be readily adapted to known wet scrubber systems and it specifically provides for the removal of unwanted mercury both by supplying S2- ions to convert Hg2+ ions into mercuric sulfide (HgS) and by supplying a chelating agent to sequester other ions, including but not limited to Fe2+ ions, which could otherwise induce the unwanted reduction of Hg2+ to the form, Hg0.

The invention relates to an anti-emulsification water-soluble metal washing agent. Every 100 parts of the anti-emulsification water-soluble metal washing agent include the following components according to parts by weight: 3-7 non-ionic surfactant, 3-7 bi-ion active agent, 1-5 chelator, 1-5 rust preventive, 5-10 inorganic builder and the balance water, wherein the non-ionic surfactant is any one of fatty amine polyoxypropylene ether, alkylphenol ether and fatty amine polyoxyethylene alkyl ether ammonium sulfate, the bi-ion active agent is any one of alkyl dimethylin acetic acid betaine, lauramidopropyl betaine and cocamidopropyl betaine, the chelator is any one of sodium citrate, ethylenediaminetetraacetic acid tetrasodium salt and nitrilotriacetic acid sodium salt, the rust preventive is any one of sodium borate, sodium nitrite, sodium benzoate and long carbon chain carboxylic acid amine, and the inorganic builder is any one of trisodium phosphate, sodium metasillcate, sodium carbonate, sodium bicarbonate and sodium hydroxide. The anti-emulsification water-soluble metal washing agent has the advantage of higher cleaning capacity and reutilization capacity.

Compositions and methods for modulating injection site pain associated with rapid acting injectable insulin formulations have been developed for subcutaneous injection. The formulations contain insulin in combination with a zinc chelator such as ethylenediaminetetraacetic acid (“EDTA”), a dissolution/stabilization agent such as citric acid, a magnesium salt, and, optionally, additional excipients. New presentations include rapid acting concentrated insulin formulations and a way to enhance the absorption of commercially available rapid acting analog formulations by mixing them with a vial containing dry powder excipients that accelerate their absorption. Devices for mixing excipient and insulin together at the time of administration, while minimizing residence time of the mixture, are also described.

The invention specifically relates to an anti-bacterial hand-washing solution and a preparation method thereof, belonging to the field of washing agents. The anti-bacterial hand-washing solution is mainly composed of fatty alcohol polyoxyethylene ether sodium sulfate, cocoamidopropyl betaine, alkyl glucoside, polyquaternary ammonium salt, fatty glyceride, humectant, mixed plant extract, tetrasodium ethylenediamine tetraacetate, sodium chloride, citric acid, jojoba oil, 1,2-pentanediol and essence. The preparation method comprises the following steps: dissolving fatty alcohol polyoxyethylene ether sodium sulfate, cocoamidopropyl betaine and fatty glyceride with water with a total amount of 70 to 80%; uniformly mixing jojoba oil, polyquaternary ammonium salt, humectant and alkyl glucoside; and mixing two mixed solutions obtained in the previous two steps, adding the rest components and carrying out uniform mixing under stirring. The anti-bacterial hand-washing solution provided by the invention has skin-care, skin-moistening, antibacterial, bacteriostatic, anti-allergy, soothing, anti-inflammatory and hand-microcirculation-improving effects and is a multifunctional hand-washing solution with strong sterilization and detergency capabilities and substantial skin-care and skin-moistening effects.

The invention discloses architectural ceramic prepared from industrial solid waste through a dry method and a process for preparing the architectural ceramic. The architectural ceramic comprises the following components in percentage by mass: 30-60% of solid waste, 40-70% of ceramic raw material and 1-3% of ceramic additive, wherein the ceramic raw material is selected from one or a composition of multiple of clay raw material, feldspar raw material or talc, and the ceramic additive is one or a combination of multiple of sodium tripolyphosphate, sodium silicate, ammonium chloride, ammonium citrate, sodium humate, sodium lignin sulfonate sodium, ethylenediamine tetraacetic acid disodium and edetic acid. After being pretreated, the granules of the solid waste are fine and are mixed evenly in a dry mixing manner and a spray drying manner and are directly used for pressing of green bricks or stored in a bin for standby, so that the ball milling energy consumption and the peptization cost are reduced, the humidification pelleting and fluidized bed drying procedures are omitted, the formula can be quickly adjusted according to the functional characteristics of the architectural ceramic, the process is simple and convenient to control, and the architectural ceramic has such good properties as heat preservation, thermal insulation and high strength.

A process for preparing a naphtha reforming catalyst has been developed. The process involves the use of a chelating ligand such as ethylenediaminetetraacetic acid (EDTA). The aqueous solution of the chelating ligand and a tin compound is used to impregnate a support, e.g., alumina extrudates. A platinum-group metal is also an essential component of the catalyst. Rhenium may also be a component. A reforming process using the catalyst has enhanced yield, activity, and stability for conversion of naphtha into valuable gasoline and aromatic products.

The invention relates to a formula and a corresponding preparation technology of a normal temperature formaldehyde removal catalysis material, and belongs to the technical fields of normal temperature adsorption catalysis and air pollution treatment. The catalysis material is prepared by adopting a one-step co-precipitation process or a step-by-step dipping process to load active components with granular, cylindrical, spherical or honeycomb high-specific surface area shell activated carbon as a carrier, one or more non-noble metal salts as main active components, such as nitrate, sulfate or chloride of manganese, iron, cobalt, nickel, copper, zinc, lanthanum or cerium, one or more alkali metal/ alkaline earth metal salts as an inorganic additive, such as oxalate, nitrate, sulfate, acetate, carbonate and bicarbonate of sodium, potassium, magnesium, calcium, and ethylenediamine tetracetic acid/ethylenediamine tetraacetic acid salt, basic amino acid, polyamide monomer and polyurethane monomer as a nitrogen-containing organic additive. The normal temperature formaldehyde removal catalysis material has the characteristics of rapid capture, high efficiency catalytic oxidation and long working cycle, and can meet requirements of long-time effective removal of formaldehyde in indoor real environment.

The invention discloses a preparation method of a lithium ion battery negative electrode material spinel porous high-entropy oxide material, and belongs to the field of inorganic oxide powder materials. The method is a low-temperature combustion synthesis method, and specifically includes the steps that metal nitrate is adopted as a metal source, one or a mixture of several of tartaric acid, citric acid, glucose, hexamine and ethylenediaminetetraacetic acid is used as a fuel, and by controlling the concentration of the metal salt raw material, the kind and the amount of the fuel, the kind andthe amount of a combustion improver and an ignition mode, characteristics of the grain size, the shape and the like of spinel ransition metal high-entropy oxide nano-powder are adjusted and controlled. According to the preparation method of the lithium ion battery negative electrode material spinel porous high-entropy oxide material, liquid-phase ingredients are adopted, molecular-level even mixing of the raw materials is ensured, and a stoichiometric ratio of the product is achieved; meanwhile the preparation method of the lithium ion battery negative electrode material spinel porous high-entropy oxide material has the advantages of being energy-saving, high in production efficiency, environmentally friendly, free from complex post-treatment and the like, and the prepared high-entropy oxide powder is high in purity, small in grain size and even in distribution, and has high initial discharge capacity and good cycle performance.

The present application includes a method for inhibiting amine degradation during CO₂ capture from flue gas streams. Particularly, the present disclosure relates to a method of inhibiting O₂- and/or SO₂-induced degradation of amines using sodium sulfite (Na₂SO₃), potassium sodium tartrate tetrahydrate (KNaC₄H₄O₆.4H₂O), ethylenediaminetetraacetic acid (EDTA) or hydroxylamine (NH₂OH), or analogs or mixtures thereof during CO₂ capture by amines.

The invention relates to an aqueous culture method of anoectochilus. In the method, anoectochilus germchits are cleaned and sterilized, transplanted in a culture dish and cultured in a culture groove filled with an aqueous culture solution; each 10L of aqueous culture solution contains the following components: 650 to 800mg of calcium nitrate tetrahydrate, 50 to 60mg of ammonium nitrate, 280 to 350mg of potassium nitrate, 100 to 130mg of potassium dihydrogen phosphate, 350 to 380mg of magnesium sulfate, 0.5 to 0.8mg of potassium iodide, 2 to 5mg of manganese sulfate, 0.2 to 0.3mg of sodium molybdate, 0.1 to 0.2mg of cobalt chloride, 2 to 4mg of boric acid, 0.5 to 1mg of zinc sulfate, 0.3 to 0.5mg of copper sulfate and 3 to 5ml of iron salt solution, wherein the iron salt solution is prepared by mixing water, green vitriol and ethylenediamine tetraacetic acid disodium. The method has the advantages of lowering production cost, simplifying production process, improving the growth of anoectochilus plants and improving the survival rate of anoectochilus plants.

Hydrocodone pharmaceutical formulations are stabilized with a stabilizing effective amount of ethylenediaminetetraacetic compound.

The invention relates to an ester type fire-resistant hydraulic fluid. The hydraulic fluid comprises the following raw materials by weight percent: 95-99% of base oil, 1.0-5.0% of diphenol propane, 0.005% of dimethylsilicone fluid or dimethylsilicone grease, 0.05% of tricresyl phosphate, 0.1% of benzotriazole, 100 parts per million (PPM) demulsifying agent T1001 or LZ5957 and 0.2-0.3% of triazole derivative, thiadiazole derivative, N-salicylidene ethylamine, N, N'-bis(salicylidene)ethylenediamine, N, N'-bis(salicylidene)propylene diamine or ethylenediamine tetraacetic acid. A preparation method of the ester type fire-resistant hydraulic fluid comprises the following steps of sufficiently and evenly stirring various materials at room temperature according to a formula, and then filtering. The ester type fire-resistant hydraulic fluid has the beneficial effects that the high temperature use performance of the product is greatly improved, the service life of a hydraulic system and the oil changing period of oils are prolonged, and the ester type fire-resistant hydraulic fluid has a good flame-retardant effect and is safe to use. The preparation method has the advantages that operation is convenient, technology and equipment are simple, energy consumption is low, cost is low, and the like.

The invention provides an environment-friendly rustproof cleaning agent prepared from the following raw materials in percentage by weight: 2-5% of one or mixture of multiple of phosphoric acid or phosphate, 2-5% of one or mixture of multiple of boric acid or borate, 0-5% of strong base, 0.5-1% of anionic surface active agent, 0.5-1% of nonionic surface active agent, 0.5-1% of one or more than one of edetic acid or ethylenediamine tetraacetates and the balance of water. According to the invention, the raw materials are added into water in sequence to obtain the rustproof cleaning agent. The environment-friendly rustproof cleaning agent provided by the invention is safe and environment-friendly and has good dustproof cleaning capability.

The invention relates to a method for simultaneous treatment of mixed pollutant exhaust gas containing NOx and SO2. Absorption liquid of ferrous salt, ethylenediaminetetraacetic acid disodium and a desulphurization agent and waste gas containing SO2 and NO are introduced into a conventional reactor to carry out the reaction, thereby realizing the simultaneous absorption of NO and SO2. The absorption liquid after the reaction can be introduced in a liquid-solid reactor which takes activated carbon as a catalyst for regeneration. The method is a low-cost wet desulphurization and denitrification technique with market competitiveness.

The invention relates to a method for preparing air auto-purification functional fabrics with a photocatalyzed coating, which comprises the following steps: firstly, a base cloth is subjected to surface treatment by an organic solution at a temperature of between 60 and 70 DEG C; secondly, deionized water, methanol and ether are taken as dispersing reagent of a fiber protecting agent, the pH value of the dispersing protecting agent is adjusted to between 9.5 and 11.5 by ammonia, and the base cloth is immersed in the dispersing protecting agent for more than 6 to 8 hours at a temperature of between 30 and 40 DEG C; thirdly, the base cloth is treated for 10 to 15 minutes by an ethylenediaminetetraacetic acid and a phytate aqueous solution; and fourthly, photocatalyst is added in a coating agent, and the coating agent is then directly coated on the base cloth by a scraper with the coating amount between 6 and 15 grams per square meter, and dried for 2 to 4 minutes at a temperature of between 110 and 120 DEG C to obtain the air auto-purification functional fabrics. The air auto-purification functional fabrics have good air purification effect; the preparation technology is simple; and the method is easy to operate and is used for industrial mass production.

The invention provides a heavy metal cadmium, lead and arsenic compound contaminated soil restorative agent. The heavy metal cadmium, lead and arsenic compound contaminated soil restorative agent is prepared from the following components in percentage by weight: 30-50 percent of biomass charcoal, 5-10 percent of diatomite, 5-10 percent of sodium bentonite, 5-10 percent of activated aluminum oxide, 10-20 percent of dithiocar-bamate, 5-10 percent of ethylenediaminetetraacetic acid, 5-10 percent of tartaric acid, 5-10 percent of polyacrylamide and 5-10 percent of sodium dodecyl sulfate. A preparation method for the heavy metal cadmium, lead and arsenic compound contaminated soil restorative agent comprises the following steps: mixing the biomass charcoal, diatomite, sodium bentonite, activated aluminum oxide, ethylenediaminetetraacetic acid, tartaric acid, polyacrylamide and sodium dodecyl sulfate in mass proportion to obtain a mixture; and adding the dithiocar-bamate into the mixture in corresponding mass proportion to sufficiently mix uniformly, thereby obtaining the prepared soil restorative agent. The prepared soil restorative agent has good effect in restoring the cadmium, lead and arsenic compound contaminated soil.

This invention pertains generally to the field of chemical synthesis and purification, and more specifically to methods of synthesizing and purifying certain 3,7-diaminophenothiazin-5-ium compounds (referred to herein as “diaminophenothiazinium compounds”) including Methythioninium Chloride (MTC) (also known as Methylene Blue). In one embodiment, the method comprises the steps of, in order: nitrosylation (NOS); nitrosyl reduction (NR); thiosulfonic acid formation (TSAF); oxidative coupling (OC); Cr(VI) reduction (CR); isolation and purification of zwitterionic intermediate (IAPOZI); ring closure (RC); chloride salt formation (CSF); one of: sulphide treatment (ST); dimethyldithiocarbamate treatment (DT); carbonate treatment (CT); ethylenediaminetetraacetic acid treatment (EDTAT); organic extraction (OE); and recrystallisation (RX). The present invention also pertains to the resulting (high purity) compounds, compositions comprising them (e.g., tablets, capsules), and their use in methods of inactivating pathogens, and methods of medical treatment and diagnosis, etc., for example, for tauopathies, Alzheimer's disease (AD), skin cancer, melanoma, viral diseases, bacterial diseases, or protozoal diseases.

The present invention discloses an RNA virus inactivation preservation solution. The inactivation preservation solution comprises ammonium salt, 1-ethyl-3-methylimidazolium bisulfate, lithium chloride, ethylenediaminetetraacetic acid, an RNase inhibitor, a surfactant, a reducing agent, a buffer agent and water. The present invention also provides an RNA virus sample inactivation and preservation method and an RNA virus detection method, and the method is conducted by using the inactivation preservation solution. The preservation solution has low cost, inhibits RNase activity, preserves RNA integrity, realizes preservation and transportation of samples at room temperature, can also quickly inactivate pathogens at room temperature, reduces infection risks of medical personnel, and reduces false negatives in detection. At the same time, the inactivation preservation solution can realize a lysis function, does not contain chaotropic reagents and alcohols, is compatible with mainstream nucleic acid extraction kits on the market, greatly saves time of an entire process, and is particularly suitable for 2019 new coronavirus (COVID-19) inactivation and lysis steps after swab sampling.

The invention relates to a rolling oil for a stainless steel, which is prepared by the following raw materials by weight: 64.5-79.9% of white oil, 5-15% of neopentyl polyol ester, 5-10% of pentaerythritol aliphatic ester, 2-5% of isooctyl stearate or butyl stearate, 0.5-1.2% of mixed-type high temperature antioxygen, 0.05-0.2% of phenol-type antioxygen, 0.05-0.1% of ethylenediaminetetraacetic acid (EDTA) dipotassium salt, 0.4-0.8% of antirust additive, 0.1-0.5% of metal passivator and 2-3% of antiwear agent. The invention uses synthetic ester to replace chlorinated paraffin, which prevents environmental pollution of chlorinated paraffin, meanwhile avoids using large quantity of water for cooling, saves massive water source and also converts the processing oil into recyclable oil, thereby prolonging the service life of the processing oil greatly. The invention has the features of excellent lubrication performance, cooling performance, rust resistance, cleanness, energy conservation andenvironmental friendliness. The waste liquid is less in volume and can be recycled. Therefore the rolling oil provided by the invention is the preferred processing oil for finishing rolling of stainless steel to obtain high-gloss surface.

A composite eluting agent for restoring Cd and Pb contaminated soil and an application method thereof belong to the technical field of soil restoration. The eluting agent is prepared mainly from EDTA (ethylenediaminetetraacetic acid) and an organic acid, wherein the organic acid is from one or any of oxalic acid, lactic acid, citric acid, humic acid, and fulvic acid. The application method of the composite eluting agent comprises the steps of (1) subjecting contaminated soil to simple crushing, and screening to remove large foreign matters and stone; (2) adding an eluting agent to the contaminated soil, keeping soil-water ratio to 1:5 to 1:10, and stirring with the soil for 2-4 h; (3) after solid-liquid separation, treating the eluting agent for recycling, adding the composite eluting agent to the contaminated soil, and stirring again for 3-6 h; (4), carrying out solid-liquid separation, and adding tap water for cleaning and eluting to obtain clean soil. By means of multi-step elution and using composite eluting agents different in concentrations, it is possible to effectively reduce Cd and Pb in soil; the method is a truly practical and economically practical eluting method.

The invention provides a preparation method for a modified graphene oxide adsorption material. The preparation method comprises the following steps: (1) ultrasonically dispersing graphene oxide in anhydrous N,N-dimethylformamide, then adding diphenylmethane diisocyanate and carrying out a reaction; and (2) uniformly mixing diphenylmethane diisocyanate-functionalized graphene oxide with ethylenediaminetetraacetic acid, and successively carrying out grinding, washing and freeze-drying so as to obtain the modified graphene oxide adsorption material. According to the invention, isocyanate is used as a bridge body, and a composite material is prepared through amidation and urethanization; an adsorbent prepared by using the method contains both polycarboxy functional groups and polyhydroxyl functional groups, has excellent adsorption effect on heavy metal ions in wastewater, and can overcome the defect that a chelate is dissolved in water and cannot be separated when EDTA is individually used for heavy metal removal.

The invention relates to an initiator composition used for synthesizing polyacrylamide capable of displacing oil, which mainly solves the problems of low polyacrylamide molecular weight, poor heat resistance and salt resistance performances and difficult satisfaction for technical requirement of tertiary oil extraction. The initiator composition used for synthesizing polyacrylamide capable of displacing oil comprises the following ingredients by weight percentage: (a) 0.5-20% of persulfate; (b) 0.1-40% of sulfite or acid sulfite; (c) 0.5-20% of NR1R2R3-represented trialkylamine compounds or N<+>R4R5R6R7-represented quaternary ammonium compounds or NH2R8-represented aliphatic amine compounds, wherein R1-R7 in the formula are selected from C1-C14 straight chain or branched chain alkyl or alkyl derivatives, R8 is selected from straight chain or branched chain alkyl or alkyl derivatives; (d) 10-80% of urea, thiourea or ammonia liquor; (e) 5-60% of ethylenediaminetetraacetic acid. The technical scheme of the invention better solves the problems and can be used in industrial production of oil displacement.

Embodiments of the present invention provide levothyroxine solutions that consist of from about 0.001% w/v to about 0.01% w/v of a levothyroxine; at least 70% w/w of a glycerol; less than 30% w/w of a water; and from about 0.01% w/w to about 1.5% w/w of an ethylenediaminetetraacetic acid (EDTA). Such levothyroxine solutions are characterized by exhibiting levothyroxine storage stability.

The invention discloses a preparation method of nanometer yttrium stabilized zirconia powder. The preparation method comprises mixing zirconium oxychloride, yttrium oxide and deionized water accordingto a mass ratio of (50-60): (0.8-1): (10-12), heating the mixture to 90-110 DEG C, carrying out heat preservation for 1-3h, adding plant gum into the mixture, then adding at least one of ethylenediaminetetraacetic acid or citric acid into the mixture, carrying out stirring for 3-5h to obtain a colloidal solution, adding an ammonia solution into the colloidal solution along with stirring for 8-10huntil pH of 10.0-11.0 so that white precipitates are produced, standing the white precipitates for aging for 24-48h, washing and filtering the precipitates, carrying out spray drying and fluid energymilling to obtain precursor powder, and calcining the precursor powder at 450-600 DEG C for 5-7h to obtain the nanometer yttrium stabilized zirconia powder. The zirconia powder has a high sintering shrinkage rate, high sintering density, good strength, good performances, small particle size and narrow distribution.

The invention provides essential oil condensation beads for washing clothes. The essential oil condensation beads comprise, by weight, 20-25% of sodium C14-16 olefin sulfonate, 15-20% of fatty alcohol polyoxyethylene ether (9EO), 10-12% of sodium alcohol ether sulphate, 8-10% of lauryl alcohol sulphate triethanolamine, 2-4% of polyethylene glycol, 1-3% of cationic alkyl polysaccharide, 1-2% of D-panthenol, 0.3-0.7% of phenoxyethanol, 0.05-0.01% of disodium ethylenediamine tetraacetate, 0.5-1% of jasminum essential oil, 0.05-0.1% of triclosan, 0.1-0.2% of protease, 0.002-0.005% of red-33 pigment and the balance deionized water. The invention further provides a preparing method for the essential oil condensation beads. The essential oil condensation beads have the multiple effects of washing, caring, sterilizing, deodorizing and physical and mental delighting, and are convenient to use.

The invention provides a paramagnetic metal complex functionalized fluorogold nano-cluster magnetic resonance and fluorescence imaging contrast agent. The invention relates to the field of magnetic resonance imaging and fluorescence imaging contrast agents. With the contrast agent provided by the invention, problems of existing contrast agents of low relaxation efficiency, high toxicity, low tissue organ selectivity and fast in-vivo metabolism can be solved. According to the invention, ethylenediaminetetraacetic acid (EDTA) or diethylene triaminepentaacetic acid (DTPA) are connected to folic-acid-modified bovine serum albumin fluorogold nano-clusters through amide bonds; and EDTA or DTPA is respectively coordinated with paramagnetic metal ions, such that the complex is obtained. With the contrast agent provided by the invention, the relaxation efficiency can reach 23.7mM<-1>*s<-1>. The contrast agent has an advantage of low toxicity. According to the invention, high spatial resolution of magnetic resonance imaging and high sensitivity of fluorescence imaging are combined. Therefore, the contrast agent provided by the invention can be used in magnetic resonance imaging and fluorescence imaging.

The present invention discloses an optical clearing agent for bone tissue. The optical clearing agent comprises dimethyl sulfoxide, sodium bicarbonate, and at least two materials selected from polyethylene glycol-400, methyl salicylate, ethylenediaminetetraacetic acid, sodium diatrizoate, glycerol, glucose, sodium dodecylbenzene sulfonate, sorbitol and laurinol, wherein a volume percentage of the dimethyl sulfoxide in the optical clearing agent for bone tissue is 40-80%, a mass percentage of the sodium bicarbonate in the optical clearing agent for bone tissue is 1-2%, the balance is other materials, and the pH value of the optical clearing agent for bone tissue is 6-11. After the optical clearing agent for bone tissue in the present invention acts on bone tissue, a refractive index inside the tissue can be quickly homogenized, and scattering inside the tissue can be reduced, such that the tissue provides improved transparency for light, the imaging depth is increased, and a new method for obtaining cortex neuron subcellular structures and microvascular information is provided. After the optical clearing agent for bone tissue is locally coated on the bone tissues or is adopted to soak the bone tissues, the bone tissue can provide improved transparency for light.

It has been discovered that aminocarboxylic acids are effective breakers for polymer-gelled aqueous fracturing fluids, particularly in the temperature range between about 120° F. (49° C.) and about 280° F. (138° C.). The aminocarboxylic acids are believed to act directly on the polymer and not to any great extent or not to as an effective extent on a crosslinking agent, if present. The polymer may be a polysaccharide, and the aminocarboxylic acid may be selected from the group including, but not necessarily limited to, tetrasodium ethylenediaminetetraacetic acid (Na₄EDTA), tetrasodium propylenediaminetetraacetic acid (Na₄PDTA), trisodium hydroxyethylenediaminetetraacetic acid (Na₄HEDTA), trisodium nitrilotriacetic acid (Na₃NTA), salts of these acids, and mixtures thereof.

PCT No. PCT/AU97/00033 Sec. 371 Date Feb. 18, 1998 Sec. 102(e) Date Feb. 18, 1998 PCT Filed Jan. 22, 1997 PCT Pub. No. WO97/26789 PCT Pub. Date Jul. 31, 1997A stomach-action molluscicide including a metal complexone as an active ingredient. The term "complexone" as used herein refers to an organic ligand containing at least one iminodiacetic group -N(CH2CO2H2)2 or two aminoacetic groups -NHCH2CO2H which form stable complexes with most cations. Preferably, the complexone is a derivative of ethylenediaminetetraacetic acid.

The invention relates to a monoclonal antibody which can resist mercury chelate. The monoclonal antibody has specificity to the mercury chelate. The mercury chelate is mercury-1-(4-benzyl-L-isothiourea)-ethylenediaminetetraacetic acid-bovine serum albumin-coupled material and mercury-EDTA. The monoclonal antibody has high titer and strong specificity. The invention also provides a method for preparing the monoclonal antibody which can resist mercury chelate and application thereof.