Abstract: A real-time, on-line method and analytical system for determining halohydrocarbons in water which operate by (1) extracting on-line samples; (2) purging volatile halohydrocarbons from the water (e.g., with air or nitrogen); (3) carrying the purge gas containing the analytes of interest over a porous surface where the analytes are adsorbed; (4) recovering the analytes from the porous surface with heat (thermal desorption) or solvent (solvent elution) to drive the analytes into an organic chemical mixture; (5) generating an optical change (e.g., color change) in dependence upon a reaction involving the analytes and a pyridine derivative; and (6) measuring optical characteristics associated with the reaction to quantify the volatile halogenated hydrocarbon concentration.

Abstract: The present invention relates to detectors for detecting fluorine-containing compounds and/or cyanide containing compounds, including hydrogen fluoride (HF) or HCN gas, hydrofluoric acid in solution, selected chemical warfare agents, selected industrial chemicals which may be hydrolyzed to release HF or HCN gas, compounds containing a cyanide group, and compounds that can release HF or HCN. The detectors comprise i) an organometallic component containing at least one bis-substituted boryl group of the formula —B(RB)(RB?) wherein each RB and each RB? is independently selected from H, halogen, C1-6 alkyl, OR6, N(R6)(R7), SR6, C3-20 aryl or heteroaryl, and C3-20 cycloalkyl or heterocycloalkyl groups, each of which may be optionally substituted, ii) a Lewis base component, and iii) a solid matrix component.

Abstract: The present technology provides an illustrative hydrofluorocarbon (HFC) detection device that includes a decomposition component, a charged particle filter, and a sensing component. The decomposition component is configured to irradiate a gas sample with a radioactive element to decompose HFC gas under conditions sufficient to form hydrogen fluoride (HF) gas and one or more ionized particles. The charged particle filter is configured to filter the one or more ionized particles, and the sensing component is configured to detect the HF gas.

Abstract: An apparatus is provided for sensing an analyte in a fluid.

Abstract: Field-effect transistors include at least two thin layers of a semiconductor material and of an electrically conductive gate material that are rolled up together. These two layers are arranged separated from one another by one or multiple barrier layers and this rolled-up multi-layer structure is integratable as field-effect transistors in circuits and/or in microfluid systems as sensors for the detection of fluids.

Abstract: The invention is directed towards methods and compositions for identifying the presence of surfactants in water. The invention is quite superior over the prior art because it can form a colorful complex in half the time, avoid the need for difficult separation steps, use a safer solvent and avoid the formation of messy foam. The invention involves adding to the water a cobalt thiocyanate reagent, pre-prepared from a cobalt salt and a thiocyanate salt, which forms a colorful complex with the surfactant. Chloroform is then added to the water. The cobalt reagent causes the virtually all of the surfactant to form a colored complex which rapidly migrates into the chloroform and prevents the surfactant from foaming. Once in the chloroform, a UV-vis spectrometer can easily and precisely identify the type and amount of surfactant that was in the water.

Abstract: Various environmental systems are disclosed. In accordance with one of the systems, a first and second valve are provided. The valves provide a first air flow path from an air pump to a photo-ionization detector is provided through a pre-filter. The valves also provide a second air flow path from the air pump to the photo-ionization detector so that the pre-filter is isolated from its environmental surroundings. Various other arrangements of environmental monitoring systems with one or more pre-filters are also disclosed.

Abstract: The present technology provides an illustrative hydrofluorocarbon (HFC) elimination device. An HFC sensing device is configured to detect an ambient, gaseous HFC composition. The HFC elimination device further includes a component comprising a surface that includes glass, and a heating element that is configured to heat the glass to a temperature to decompose the ambient, gaseous HFC composition in response to detection of the ambient, gaseous HFC composition by the HFC sensing device.

Abstract: [Problems to be solved by the invention] A method and sensor for detecting the fluorides, chlorides or bromides of hydrocarbons such as C5F8 or C4F6 are provided, which are capable of the detection with quickness and high sensitivity at a room temperature or a temperature closer thereto, not a high temperature, without interference with hindrance gases from fluorine liquids or the like. [Means for solving the problems] A detection agent, detection method, and detection sensor based on an optical change or mass change by a direct reaction with a nitrogen compound having at least two rings at which an amidine backbone is centered, which is represented by the following general formula (I).

Abstract: Congeneric, halogenated, fluorinated aromatic compounds A and B are each phenyl radicals, L=oxygen atom, sulfur atom or alkylene radical and p=0 or 1; processes for their preparation and their use.

Abstract: A water flow pattern simulation tank includes a tank base, a tank aquarium having an aquarium interior carried by the tank base, at least one nozzle in the tank aquarium, at least one drain in the tank aquarium in spaced-apart relationship to the nozzle, a pump disposed in fluid communication with the nozzle and the drain and at least one insert placed in the tank aquarium generally between the nozzle and the drain.

Abstract: A reactive mass label for labelling a biological molecule for detection by mass spectrometry, which label comprises a reactive functionality for labelling thiol groups or carbonyl groups. Also provided is a reactive mass label for labelling a biological molecule for detection by mass spectrometry, wherein the mass label comprises the following structure: X-L-M-S-Re wherein X is a mass marker moiety, L is a cleavable linker, M is a mass normalization moiety, S is a mass series modifying group comprising the following group: wherein J is C?O, K is NH, and n is 2 or J and K are both CH2 and n is 1, and wherein m is at least 1; and Re is a reactive functionality for attaching the mass label to a biological molecule.

Abstract: A method of calibrating a biological detector can include training a biological detector to detect a calibration compound, wherein the calibration compound comprises an odor that is detectable by the biological detector and is not used in an environment for which the biological detector is trained to detect odors, presenting the biological detector with a device comprising the calibration compound, and determining whether the biological detector will alert to the calibration compound.

Abstract: The present technology provides an illustrative hydrofluorocarbon (HFC) detection device that includes a decomposition component, a charged particle filter, and a sensing component. The decomposition component is configured to irradiate a gas sample with a radioactive element to decompose HFC gas under conditions sufficient to form hydrogen fluoride (HF) gas and one or more ionized particles. The charged particle filter is configured to filter the one or more ionized particles, and the sensing component is configured to detect the HF gas.

Abstract: The present technology provides an illustrative hydrofluorocarbon (HFC) elimination device. An HFC sensing device is configured to detect an ambient, gaseous HFC composition. The HFC elimination device further includes a component comprising a surface that includes glass, and a heating element that is configured to heat the glass to a temperature to decompose the ambient, gaseous HFC composition in response to detection of the ambient, gaseous HFC composition by the HFC sensing device.

Abstract: The present invention provides a stabilized refrigerant composition containing a hydrofluoropropene with low global warming potential (GWP) that can remain stable even in the presence of air (oxygen) for a long period of time. More specifically, the present invention provides a refrigerant composition containing a hydrofluoropropene and a stabilizer. The stabilizer is at least one member selected from the group consisting of alkylcatechols, alkoxyphenols, benzoquinones, phenothiazines, and phthalates.

Abstract: A phenyl tin compound is synthesized by using a derivative having various functional groups and a bromo- or iodo-benzene ring as a labeling material of a radioactive ligand. On the other hand, a novel hydroxytosyl iodobenzene compound having an electron-donating group is obtained by oxidizing iodobenzene having one or more electron-donating groups and reacting it with tosylic acid. Then, a diphenyliodonium salt which is a labeling precursor is synthesized by reacting the resulting compound with various phenyl tin compounds. Finally, a 18F-labeled ligand having various functional groups and a [18F] fluorobenzene ring is synthesized by reacting the resulting diphenyliodonium salt with [18F]F?.

Abstract: This application relates to vaprochromic coordination polymers useful for analyte detection. The vapochromism may be observed by visible color changes, changes in luminescence, and/or spectroscopic changes in the infrared (IR) signature. One or more of the above chromatic changes may be relied upon to identify a specific analyte, such as a volatile organic compound or a gas. The chromatic changes may be reversible to allow for successive analysis of different analytes using the same polymer. The polymer has the general formula MW[M?X(Z)Y]N wherein M and M? are the same or different metals capable of forming a coordinate complex with the Z moiety; Z is selected from the group consisting of halides, pseudohalides, thiolates, alkoxides and amides; W is between 1-6; X and Y are between 1-9; and N is between 1-5. Optionally, an organic ligand may be bound to M. In alternative embodiments of the invention M may be a transition metal, such as Cu and Zn.

Abstract: This application relates to vaprochromic coordination polymers useful for analyte detection. The vapochromism may be observed by visible color changes, changes in luminescence, and/or spectroscopic changes in the infrared (IR) signature. One or more of the above chromatic changes may be relied upon to identify a specific analyte, such as a volatile organic compound or a gas. The chromatic changes may be reversible to allow for successive analysis of different analytes using the same polymer. The polymer has the general formula MW[M?X(Z)Y]N wherein M and M? are the same or different metals capable of forming a coordinate complex with the Z moiety; Z is selected from the group consisting of halides, pseudohalides, thiolates, alkoxides and amides; W is between 1-6; X and Y are between 1-9; and N is between 1-5. Optionally, an organic ligand may be bound to M.

Abstract: A miniature system encapsulating a chemical transducer (sensor) prepared for a specific chemical, coupled with a miniature radio transmitter that relays information to a handheld receiver on the presence, or absence, of the target chemical. The system is deployed by several means, such as grenade, small rocket, large caliber rifle, drone plane, etc. The deployment device can hold many such sensor devices, each prepared for a particular toxic chemical, such as chlorine, hydrogen sulfide, or phosgene.

Abstract: A method for determining the amount of a known iodine-containing organic compound in an aqueous solution. The method comprises electrochemically reducing the known iodine-containing organic compound in an aqueous medium to release iodide anions, chemically oxidizing the iodide anions to produce molecular iodine, and measuring the amount of molecular iodine. The known iodine-containing organic compound is preferably an aryl iodide, such as Iothalamate. Other preferred iodine-containing organic compounds include various glomerular filtration rate (GFR) marker compounds in plasma or urine samples, as useful in the measurement of GFR for an animal. The electrochemical reduction of the known iodine-containing organic compound is preferably performed in an electrochemical cell including a working electrode separated from a counter electrode by a cation exchange membrane. The working electrode most preferably includes bismuth and the counter electrode most preferably includes platinum.

Abstract: The present invention relates to detectors for detecting fluorine-containing compounds and/or cyanide containing compounds, including hydrogen fluoride (HF) or HCN gas, hydrofluoric acid in solution, selected chemical warfare agents, selected industrial chemicals which may be hydrolysed to release HF or HCN gas, compounds containing a cyanide group, and compounds that can release HF or HCN. The detectors comprise i) an organometallic component containing at least one bis-substituted boryl group of the formula —B(RB)(RB+) wherein each RB and each RB? is independently selected from H, halogen, C1-6 alkyl, OR6, N(R6)(R7), SR6, C3-20 aryl or heteroaryl, and C3-20 cycloalkyl or heterocycloalkyl groups, each of which may be optionally substituted, ii) a Lewis base component, and iii) a solid matrix component.

Abstract: The compositions and methods relate to an organic polymer-inorganic particle sensor material for detecting analytes. Interactions between the polymer and the particles are affected by the presence of analyte, which displaces the polymer and increases its free volume. This change in free volume can be detected, e.g., using an embedded piezoresistive microcantilever (EPM) sensor. Analytes that can be detected include noxious substances, such as hydrogen cyanide gas and carbon monoxide.

Abstract: A method of detecting organic vapors is described. More particularly, the method involves the use of an analyte sensor that contains a polymeric material having a relatively large intrinsic porosity and that is capable of fluorescence in the visible region of the electromagnetic spectrum. The method further includes exposing the analyte sensor to an environment that may contain an organic vapor and monitoring the analyte sensor for a change in a fluorescence signal. Although the organic vapor itself typically does not fluoresce in the visible wavelength range, presence of an organic vapor can alter the fluorescence signal of the analyte sensor.

Abstract: A method for measuring hypochlorite ion, which comprises the steps of: (A) reacting, with hypochlorite ion, a compound represented by the following general formula (I): wherein R1 represents a 2-carboxyphenyl group which may be substituted; R2 represents a phenyl group which is substituted with a substituted or unsubstituted amino group; X1 and X2 each independently represents either hydrogen atom or a halogen atom; or a salt thereof; and (B) measuring fluorescence of a dearylated compound generated in the aforementioned step (A) or a salt thereof.

Abstract: The present invention generally relates to emissive materials, devices, and related methods. In some cases, the present invention provides sensors and methods for the determination of analytes, wherein the analytes may be determined by monitoring, for example, a change in an optical signal of an emissive material upon exposure to an analyte. The analyte and the emissive material may interact via a chemical reaction, such as an oxidative addition reaction, or other chemical, biochemical or biological interaction (e.g., recognition), to form a new emissive species. In some cases, the present invention may be useful in the detection of a wide variety of analytes, such as toxins, chemical warfare agents, and explosives. The present invention also provides emissive compounds, and related methods, including metal complexes that are capable of interacting with an analyte to produce a change in the emission of the compound.

Abstract: Provided are a coloration agent for carbonyl sulfide which contains a metal oxide, and at least one metal component selected from among a cerium component, a silver component, a copper component, a nickel component, and an iron component, the metal component being supported on the metal oxide, or which contains at least one metal oxide selected from among a cerium oxide, a silver oxide, a copper oxide, a nickel oxide, and an iron oxide; carbonyl sulfide detection means including the coloration agent for carbonyl sulfide; and a fuel cell system including the detection means. The coloration agent for carbonyl sulfide has the ability to develop a color in the presence of carbonyl sulfide even at ambient temperature, exhibits excellent performance in detecting carbonyl sulfide contained in a hydrocarbon fuel, and enables the service life of a desulfurizing agent to be determined through visual observation.

Abstract: Generally, this invention relates to the development of field monitoring methodology for new substances and sensing chemical warfare agents (CWAs) and terrorist substances. It also relates to a portable test kit which may be utilized to measure concentrations of halogenated volatile organic compounds (VOCs) in the field. Specifically it relates to systems for reliably field sensing the potential presence of such items while also distinguishing them from other elements potentially present. It also relates to overall systems and processes for sensing, reacting, and responding to an indicated presence of such substance, including modifications of existing halogenated sensors and arrayed sensing systems and methods.

Abstract: A method for measuring hypochlorite ion, which comprises the steps of. (A) reacting, with hypochlorite ion, a compound represented by the following general formula (I): wherein R1 represents a 2-carboxyphenyl group which may be substituted; R2 represents a phenyl group which is substituted with a substituted or unsubstituted amino group; X1 and X2 each independently represents either hydrogen atom or a halogen atom; or a salt thereof; and (B) measuring fluorescence of a dearylated compound generated in the aforementioned step (A) or a salt thereof.

Abstract: The present invention provides: a process for preparing a vinyl polymer containing a halogen in an amount of 1,000 mg or less per kilogram, in which a vinyl polymer containing the halogen produced by atom transfer radical polymerization of a vinyl monomer is heated at a temperature in the range of 140 to 250° C. to dehalogenate the vinyl polymer; a vinyl polymer obtained by the process; and a hydrosilylation-reactive curable composition containing the vinyl polymer.

Abstract: A process for purifying a crude polyether, comprising contacting a crude polyether obtained by addition polymerizing an active hydrogen-containing compound with an alkylene oxide compound in the presence of an alkali metal-containing basic catalyst to an adsorbent comprising a synthesized hydrous magnesium silicate compound which satisfies the following requirements (1) to (5) in order to reduce the alkali metal content of the crude polyether: (1) it is represented by the following formula I: (CaO)x.(MgO)y.(Al2O3)z.SiO2.mH2OI wherein x, y, z and m satisfy the following ranges: x<y, z<y, 0?x?0.1, 0.6?y?0.6, 0?z?0.1 and 0.1?m?1.5, (2) it is amorphous according to the analysis of its powder method X-ray diffraction diagram, (3) it has a BET specific surface area of 100 to 400 m2/g, (4) it has an alkali metal content of 0.1 wt % or less, and (5) it has an average particle diameter of 2 to 60 ?m.

Abstract: 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, lewisite, diphosgene and others by, in one embodiment, first reacting the agents with superoxide free radical anion (.O{overscore (2)}) to produce light pulses which can be detected by a standard photon counter. The superoxide may be available from a dimethyl sulfoxide superoxide (.O{overscore (2)}) liquid solution, from lecithin coated beads charged with superoxide (.O{overscore (2)}) in a reaction vessel or from a quarternary ammonium ion exchange resin charged with superoxide anion (.O{overscore (2)}) in a reaction vessel.

Abstract: The object of the invention is to propose a novel biomarker for stress states, which biomarker is highly meaningful and capable of enabling quantitative measurements to be made of stress levels. To do this, it has been found, surprisingly, that the air at the end of a person's breathing out, known as “alveolar” air, contains fluorine compounds when that person has been subjected to various stress states. More precisely, the present invention provides components based on fluorine compounds, in particular fluorinated chloroalkanes, used as biomarkers of stress states.

Abstract: The present invention relates to the use of fluorogenic or chromogenic dyes as reporter molecules for detecting cell entry by a specific molecule.

Abstract: 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 ligands, as shown in Formulae I and II below. These complexes exhibit positive luminescence upon exposure to the vapors of organ-halogen compounds like CH2Cl2 or CHCl3 with high selectivity over non-chlorinated common organic vapors. Direct relationships between vapor concentration and luminescence intensity are established using thin films prepared from these complexes.

Abstract: A sterilization system uses a sterilization process monitoring device which is capable of indicating the efficacy of the sterilization process. To enhance accuracy of the monitoring function, the monitoring device is located in such a fashion that an antimicrobial agent used in the process can only reach the monitor through an area containing the article to be sterilized.

Abstract: An apparatus and method for monitoring a source gas for detection of phosgene and/or chlorine dioxide therein, in which the source gas is filtered for removal of hydrogen sulfide and/or chlorine and/or hydrogen chloride prior to monitoring of the source gas by a gas sensor specific for phosgene or chlorine dioxide detection. The filter includes a support having Ag2O thereon, and when the source gas contains chlorine dioxide, chlorine also is present in the source gas prior to its filtration.

Abstract: 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 ligands, as shown in Formulae I and II below. These complexes exhibit positive luminescence upon exposure to the vapors of organ-halogen compounds like CH2Cl2 or CHCl3 with high selectivity over non-chlorinated common organic vapors. Direct relationships between vapor concentration and luminescence intensity are established using thin films prepared from these complexes.

Abstract: A biosensor based on complexes between biomolecule receptors and colloidal Au nanoparticles, and more specifically, colloid layers of receptor/Au complexes that can be used to detect biomolecule analytes through measuring of binding-induced changes in electrical resistance or surface plasmon resonance. Also disclosed is a method for detecting and analysing carrier-borne chemical compounds with Raman spectroscopy using an improved SERS substrate. Further disclosed is an improved method for detecting compounds in solvents using capillary electrophoresis in conjunction with Raman spectroscopy.

Abstract: 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 cyclodextrin or derivative thereof.

Abstract: 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, and a subsequent reaction-measuring step of reacting the resultant with an arsenious acid reagent solution and an ammonium cerium sulfate reagent solution and measuring absorbance in the reaction solution, characterized in that the specimen-pretreating step is performed by heating and cooling treatment under an airtight condition.

Abstract: Apparatus and methods for monitoring the presence of an analyte in a closed vial wherein a sample contained within the closed vial is conveyed to an analyzer. The analyzer determines a value of a spectral property dependent on analyte concentration at a position within a headspace formed above the sample within the vial. An indicator is used to compare the measured value of the spectral property with a predetermined limit criteria to determine the presence or absence of the analyte. Vials wherein the presence of the analyte is detected are indicated as product vials whereas vials wherein the absence of the analyte is detected are indicated as rejected vials. The rejected vials are conveyed by a transferrer to a rejected vial station. A first portion of the product vials are conveyed by a sampler to a sample collection station. A second portion of the product vials are conveyed to a labeler.

Abstract: A composition of matter has the formula: 1

Abstract: A composition of matter has the formula: where n is an integer equal or greater than 1. The composition of matter possesses characteristic absorbance behavior with respect to infrared and visible energy, which is used to detect and determine the concentration of TCE. In another aspect, a method for generating the composition comprises reacting trichloroethylene (TCE) with poly(ethylenimine) in accordance with the formula: where n is an integer equal or greater than 1. Also, the invention sets forth a sensor to detect trichloroethylene (TCE) in materials. The sensor includes the composition of material that can absorb at least one of infrared (IR) or ultraviolet (UV) or visible (VIS) energies when formed by the reaction of trichloroethylene (TCE) with poly(ethylenimine).

Abstract: A sampling material for a carbonyl compound in a gas comprising a reagent capable of converting a carbonyl compound to a derivative thereof supported on a cation exchanger; and a sampling cartridge for a carbonyl compound in a gas wherein a sampling material for a carbonyl compound in a gas comprising a reagent capable of converting a carbonyl compound to a derivative thereof supported on a cation exchanger is packed in a column are provided. The sampling cartridge can be used for analyzing a carbonyl compound such as formaldehyde with ease and at a high sensitivity and high accuracy, and has excellent storage stability.

Abstract: There was previously no monitoring method and monitoring apparatus which could measure dioxins at ppt levels and dioxin precursors at ppb levels with high sensitivity.

Abstract: A sterilization system using a sterilization process monitoring device which is capable of indicating the efficacy of the sterilization process in an enclosed sterilization container while still maintaining the sealed state of the sterilization container. The process monitoring device comprises at least one biological indicator and/or at least one chemical indicator. Upon completion of the sterilization cycle, the process monitoring device can be advantageously removed from the system to determine chemical and/or biological efficacy of the sterilization process. The removal of the biological and/or chemical indicators does not disturb the sterilized state of the articles inside the sterilization container.

Abstract: 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 electrons formed inside a mass spectrometer operated at negative ion electron capture conditions. The method allows for detection of the toxic species from the parts per million level, down to the parts per billion levels.

Abstract: 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 extracting TCDD, by providing for chemical destruction of potentially interfering components in a sample matrix making the steam distillation of TCDD possible. A typical sample matrix comprises blood serum.

Abstract: Generally, this invention relates to the development of field monitoring methodology for new substances and sensing chemical warfare agents (CWAs) and terrorist substances. It also relates to a portable test kit which may be utilized to measure concentrations of halogenated volatile organic compounds (VOCs) in the field. Specifically it relates to systems for reliably field sensing the potential presence of such items while also distinguishing them from other elements potentially present. It also relates to overall systems and processes for sensing, reacting, and responding to an indicated presence of such substance, including modifications of existing halogenated sensors and arrayed sensing systems and methods.