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7531360 |
Method of dechlorination treatment of flowing water, in particular upstream of a biological pollution detector
A selective method of dechlorination treatment of circulating water containing disinfectant chlorine in the form of ClO − ,HClO, ClO 2 or chloramine, where an ascorbic acid aqueous solution is...
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7491546 |
Reagent delivery and photometric chlorine analysis
Water soluble analytical agents for chlorine analysis of water are delivered into a sample from a support that is beneficially moved in the sample to assist delivery and mixing. Beneficially, an...
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7402299 |
Intracorporeal medicaments for photodynamic treatment of disease
New intracorporeal photodynamic medicaments and certain medical uses and methods for use of such photodynamic medicaments for treatment of disease in human or animal tissue are described, wherein a...
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7396691 |
Method for the detection of fluoride or hydrogen fluoride and detection kit
The present invention relates to a method for detecting and/or measuring the concentration of fluoride (F − ) or hydrogen fluoride (HF) in a sample, comprising the steps consisting of bringing...
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7384623 |
High energy phototherapeutic agents
High energy phototherapeutic agents or radiosensitizer agents comprised of a halogenated xanthene, or other related agents that exhibit a preference for concentration in biologically sensitive...
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7273588 |
Methods of sampling halosilanes for metal analytes
Methods for determining the amount of at least one metal analyte present in a liquid or gas sample of a halosilane supply (e.g., a chlorosilane supply) are disclosed herein. A sample of a...
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7198955 |
Method and apparatus for measurement of blood substitutes
A method is disclosed whereby the concentration of a blood substitute, such as cross-linked hemoglobin, in a serum or plasma specimen is rapidly and accurately identified and quantified. The method...
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7182873 |
Method of fluoride-containing wastewater treatment
First, a primary fluoric ion concentration detection process is performed, and a primary calcium salt addition process is performed to add calcium salt in a first reaction tank, wherein the dosage...
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7074365 |
Detector for halogen toxicants and method
The invention herein provides for the detection of certain organic halogen-containing agents or toxicants such as sarin, chloropicrin, mustard gas, mustard chlorohydrin, phosgene, chlorine, soman,...
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6998271 |
Luminescent sensory material for organic-halogen compounds, and methods and apparatus utilizing such
A luminescent sensory material for the detection of the presence of organo-halogen compounds is described. This material is based on a platinum chromophore functionalized with pyridylacetylide...
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6890758 |
Measurement of complexing agent concentration in an electroless plating bath
The concentration of citrate complexing agent in an electroless cobalt or nickel plating bath is determined by titrating a sample of the electroless plating bath containing a small concentration of...
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6881583 |
Water chloramination control system
A water chloramination control system compares the concentration of aqueous higher chloramines to aqueous ammonia to optimize the ratio of added ammonia to chlorine. Aqueous ammonia concentration...
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6777242 |
Aqueous solution based on an azo dye, process for its manufacture and use thereof
The present invention relates to a stable aqueous solution (A) comprising an azo dye, a borate buffer and one or more masking agents, wherein the azo dye changes its coloration or coloration...
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6753186 |
Water quality monitoring and transmission system and method
A water quality sampling system and method in which compact water impurity detector and monitoring units intended for domestic use are installed in a residential environment while detected values...
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6689618 |
Method and test strip of detecting oxidizing adulterant in urine
A single reagent system and a method to detect and measure oxidizing adulterants in bodily fluid being screened for drugs of abuse are disclosed. The system comprising a strip containing 0.05 to...
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6673226 |
Voltammetric measurement of halide ion concentration
The concentration of chloride ion in an acid copper electroplating bath is determined from the effect that chloride exerts on the copper electrodeposition rate in the presence of organic additives....
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6627450 |
Method of measuring chlorine content in aqueous solution
Methods of measuring free and total chlorine content in solutions are provided without lowering the pH of the solution to the acid range by modifying a solution containing chlorine and water to...
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6617168 |
Evaluation method and evaluation system of free hypohalous acid concentration
The present invention provides an evaluation method and an evaluation system of free halogen concentration which eliminate the necessity of early exchanging or recycling of catalysts, as compared...
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6602717 |
Apparatus for eliminating halide ions from aqueous solutions and method to remove halide ions from liquid aqueous samples
Apparatus for eliminating halide ions such as chloride ions from aqueous solutions having a hollow cylindrical sample holding chamber ( 2 ), the front end of which has an orifice ( 3 ) and in the...
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6599747 |
Soil test
A test for determining the bioavailable fraction of an organic pollutant present in soil comprises determining the fraction of the organic pollutant present in the soil which may be extracted by a...
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6589796 |
Method for measuring iodine and reaction instrument for specimen pretreatment
A iodine-measuring method for determining or detecting iodine concentration in a specimen, comprising a specimen-pretreating step of thermally digesting a specimen together with an oxidizing agent,...
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6537823 |
Method for detection of bromine in urine using liquid chemistry dry chemistry test pads and lateral flow
This invention is in the field of toxicology and clinical diagnostics. More specifically, this invention provides a single dry chemistry, liquid chemistry, or lateral flow dry chemistry combination...
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6521461 |
Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes
A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or...
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6472223 |
Method and system for continuously monitoring and controlling a process stream
A method for directly monitoring and controlling a continuous process stream for dechlorination residual is provided. A sample stream to which a dechlorination agent has been added to completely...
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6413473 |
Multicomponent test systems useful in analyzing liquid samples, and uses therefor
The invention relates to multicomponent test systems which indicate the concentration of one or more analytes in a liquid sample, as well as the effect of action on the sample which results in an...
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6398961 |
Device and method for sensing low level iodine in aqueous solution
The present invention relates to a method and to a device for sensing low levels of iodine in an aqueous solution by using an extraction procedure whereby iodine from the aqueous solution is...
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6315950 |
Controlling chlorination of wastewater and chloramination of drinking water
A method is described for precisely controlling chlorination of wastewater and chloramination of drinking water. The method involves analyzing the water for the presence of residual monochloramine...
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6255117 |
Method and device for determining monopersulfate
A test method and device are described for quantitatively determining the presence and concentration of monopersulfate ion in aqueous solution. Contacting the aqueous solution containing...
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6214624 |
Use of perfluorocarbons as tracers in chemical compositions
The present invention is directed to tracer-containing chemical compositions and to the use of at least one perfluorocarbon tracer in such compositions to provide a means of identifying and...
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6190922 |
Substrate supported liquid extraction
This invention relates generally to a method for the extraction of organic liquid contaminates from a sample. This invention is directed to the ability of hydrophobic extraction material or ribbon...
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6180412 |
Test for chlorine in water
An improved test is described for chlorine in pool and spa water where potassium monopersulfate is used as an oxidizing agent and DPD is used as an indicator. N,N-bis(hydroxyethyl)-2-aminoethane...
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6177279 |
Ion extraction process for single side wafers
A process for extracting inorganic ionic contaminants from a front surface of a silicon wafer for chemical analysis. The wafer is placed in a container upon a support which holds the wafer in a...
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6143568 |
Method for determining constituents in water
A method for determining constituents in water, in particular the content of organic carbon and/or nitrogen, in which an aqueous sample is evaporated and combusted in at least one heating vessel...
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6113858 |
Monitor with in-situ optical probe for continuous concentration measurements
An on-site monitor is disclosed for providing automatic measurements of chemical concentrations in a liquid or gaseous environment. The opto-electronic monitor has an extended probe, which can be...
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6060325 |
Detection and monitoring of toxic halogenated compounds
The present invention is directed to a method for determining the halogen toxicity level in a sample containing halogenated compounds, specifically halogen containing rubbers by utilizing thermal...
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6030842 |
Method, composition and device for the determination of free halogens in aqueous fluids
A sensitive and convenient unitized method, reagent composition and test device is presented for the determination of free halogens in aqueous test fluid samples. The reagent composition basically...
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5972713 |
Method for determining total chlorine amount and a kit for determining total chlorine amount
A method for determining total chlorine amount present in a sample by mixing the sample with a benzidine indicator solution comprising a benzidine compound capable of forming a dye by a reaction...
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5962334 |
Process for extracting 2,3,7,8-tetrachlorodibenzo-p-dioxin
A process for the extraction and purification of TCDD (2,3,7,8-Tetrachlorodibenzo-p-dioxin) from a sample matrix. The process of the present invention overcomes a problem of prior art processes for...
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5942440 |
Method for detecting organic contaminants in water supplies
A system for detecting organic contaminants in water supplies. A sampling unit is employed which includes a housing having at least one opening therein and a tubular member positioned within the...
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5939328 |
Method for the determination of iodide
A method for the determination of iodide in aqueous solutions, preferably in urine. The process is characterized in that the sample solution is admixed with a chromogen and a peracid solution and...
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5888758 |
Broad range total available chlorine test strip
A composition, method, and test device for determining the total available chlorine concentration, and the relative amounts of free and bound chlorine, of a test sample are disclosed. The test...
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5866073 |
Detector of halogenated compounds based on laser photofragmentation/fragment stimulated emission
A method and apparatus is provided for real-time detection of trace amounts of atmospheric and tropospheric halogen-containing compounds. The present invention can be used either for in situ...
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5783149 |
Kit for determination of residual chlorine in water with 3,3',5,5'-tetramethylbenzidine
Colorimetric methods for determination of residual chlorine, free and combined, in water are described which comprise the use of 3,3',5,5'-tetramethylbenzidine (TMB), as well as methods and kits...
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5759820 |
Process for producing cDNA
The process includes the steps of: a) contacting a liquid containing mRNA with an insoluble support having DNA probes attached thereto via the 5' -terminus thereof whereby the MRNA is hybridized to...
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5691205 |
Fluorometric analysis of chloride ion and chemical sensor therefor
Provided is a fluorometric analytical method for detecting chloride ion in a sample by quenching of fluorescence of a fluorescent dye, the fluorescent dye being one of...
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5654201 |
Chlorine quality monitoring method
An apparatus and method for monitoring the product quality of chlorine in which a sample stream of chlorine is taken from a chlorine stream and a portion of the sample stream is passed to one of...
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5629212 |
Chloride monitoring apparatus
A chloride analyzer includes an inlet valve and filters for process water to be analyzed, as well as a pH electrode to verify the pH value of the incoming liquid before further treatment. A...
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5599716 |
Measurement of radioactive content of waste and plant items by radiolytic transformation of reactant gases
A process for the measurement of the level of radioactivity of a solid by contacting the solid with a chemically stable reactant fluid. The reactant fluid is converted by nuclear radiation to a...
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5571725 |
Method for precipitation of insoluble salts in divalent ion-form materials
Selected polyvalent anions or cations are removed from a liquid sample stream as a pretreatment for the analysis of the liquid sample stream. A stream containing anions of interest, precipitable...
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5547877 |
Methods for the rapid detection of toxic halogenated hydrocarbons and kits useful in performing the same
Methods for the detection, identification and/or quantitation of halogenated hydrocarbons in aqueous samples and kits for performing the methods are provided which provide high sensitivity and can...
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