General Electric Company

Timothy Mark Sivavec

Radislav Alexandrovich Potyrailo

Sunita Singh Baghel

Sharon M Fukuyama

Joseph James Salvo

Patricia Denise Mackenzie

Angelo Anthony Bracco

Andrew Michael Leach

Caibin Xiao

David Birenbaum Engel

Sharon J McCormick

Don Royall Houston

Theodore J Cecconie

Lamyaa Hassib

David B Engel

Tohru Takekoshi

Jimmy Lynn Webb

Andrew Philip Shapiro

David Gilles Gascoyne

Yongjae Lee

Roy F Thornton

Patricia P Anderson

Nandini Nagraj

David P Horney

Daniel Paik

The subject matter of the present disclosure generally relates to a sensor assembly having a first component configured to melt when a temperature of the sensor assembly reaches a first value below a minimum value of a predetermined temperature range, a second component configured to melt when the temperature of the sensor assembly reaches a second value above a maximum value of the predetermined temperature range, and a third component configured to monitor a volume of fluid disposed in a vessel when the temperature of the sensor assembly is within the predetermined temperature range.

Multifunctional sensor

A method of quantitatively measuring the concentration of a chemical species in a sample solution with a sensor film. A hydrogel sensor film is prepared having a chemical composition comprising an indicator that changes its optical property in the ultra-violet, visible or near-infrared spectral range upon being exposed to the chemical species in the sample solution. The film is exposed to a fixed amount of the sample solution. The concentration of the chemical species in the sample solution is quantified using the average absorbance measured from the sensor film.

Material compositions for sensors for determination of chemical species at trace concentrations

Material compositions for sensors for determination of chemical species at trace concentrations and method of using sensors

Poly (1,4-ethylene-2-piperazone) composition, method for production of a poly(1,4-ethylene-2-piperazone), composition TCE-detecting method and sensor

An apparatus provides for the detection, the determination of the location or the spatial distribution, and/or the quantification of an amount of a chemical species by allowing the chemical species to come into contact with a fluid medium contained in a permeable capillary, transferring the content of the capillary after the contact to a detector, and detecting the chemical species as the content of the capillary is transferred to a detector. The fluid medium can contain a selected reagent that selectively interacts with the chemical species to produce an optically detectable interaction product. The location and amount of the chemical species are determined from a characteristic of the chemical species or its interaction product measured on the content of the capillary and the time at which the characteristic is detected. The apparatus may be used in a method for detecting, determining the location or the spatial distribution of, and quantifying a wide range of chemical compounds, such as for monitoring chemicals in environment and industrial facilities and determining products in a combinatorial experiment.

Apparatus and method for spatially detecting or quantifying chemical species

A contaminated aqueous composition is withdrawn from a groundwater extraction well and the groundwater is treated in a pump and treat system to remove a contaminant. The treating of the aqueous composition is monitored from a location remote from the groundwater extraction well and the treating is adjusted to remove a contaminant in accordance with the monitoring. A system to treat a contaminated aqueous composition comprises a capture zone to intercept a contaminated aqueous composition and a surface pump and treat system to receive and treat the contaminated aqueous composition from the capture zone. The system also includes a sensor that senses a contaminant in the contaminated aqueous composition and a monitor to receive information concerning the contaminant from the sensor and to consequently control the pump and treat system to treat the contaminated aqueous composition. The monitor is situated at a location remote from the pump and treat system.

Method and system to remotely monitor groundwater treatment

An on-line sparging sampling system and method sparges polar and non-polar volatile organic compounds from aqueous discharge. The system comprises a network of tubular members that are interconnected to each other to define a fluid passage, in which the network of tubular members comprises an inlet for influent aqueous discharge into the network of tubular members and an outlet for discharge of aqueous discharge from the on-line sparging sampling and monitoring system; a sparger disposed in the network of tubular members, in which the sparger is disposed between the inlet and the outlet of the aqueous discharge so that aqueous discharge flows by the sparger, the sparger providing inert non-reactive gas to the on-line sparging sampling and monitoring system; and at least one analytic device connected to the on-line sparging sampling and monitoring system for analyzing volatile organic compounds in the aqueous discharge. The aqueous discharge forms an aqueous discharge portion and a headspace during flow through the network of tubular members. The sparger provides the inert non-reactive gas to flow through the aqueous discharge portion. The inert non-reactive gas partitions volatile organic compounds from the aqueous discharge portion to the headspace. Thus, polar and non-polar volatile organic compounds can be analyzed by the at least one analytic device.

On-line sparging sampling and monitoring systems and methods

A non-iron sulfide is introduced into an iron-containing zone to form ferrous sulfide. A contaminated aqueous composition is then contacted with the ferrous sulfide to react with said contaminants.

Composition for treating aqueous composition contaminants

Poly(1,4-ethylene-2-piperazone) composition, method for production of a poly(1,4-ethylene-2-piperazone) composition, TCE-detecting method and sensor

In a method for treating a contaminated fluid stream, a characteristic of a flow of the composition to a carbon adsorption zone is sensed. The sensing is remotely monitored to determine a treatment for the contaminated fluid stream. The contaminated fluid stream is then treated according to the monitoring. A system for treating a contaminated fluid stream comprises a sensor that senses a characteristic of a flow of a contaminated fluid stream prior to treatment and a monitor to receive information concerning the characteristic from the sensor and to consequently control the carbon adsorption zone to treat the contaminated fluid stream. The monitor is situated at a location remote from the carbon adsorption zone.

Method and system to remotely monitor a carbon adsorption process

A headspace sampling system monitors materials in wastewater. The headspace sampling system comprises a sample receptacle that can contain a wastewater sample; a sparger chamber vapor column; a sample receptacle cover assembly that connects the sparger chamber vapor column to the sample receptacle; a sparger tube; at least one sensing device; and at least one analytic device. The sparger tube and the sample receptacle define a headspace. The sparger chamber vapor column is in communication with the sample receptacle and is closed by a sparger chamber vapor column cover at a second end that is opposed to the sample receptacle. The sparger tube extends into the sample receptacle and the wastewater sample in the sample receptacle. The sparger tube is connected to a source of inert gas at a first end opposed to the sample receptacle and comprises a dispersion device at an end opposed to the first end. The sensing device is disposed in the headspace sampling system in the headspace. The analytic device in communication with the least one sensing device. Inert gas can flow through the sparger tube into the wastewater sample to separate materials from the wastewater, the sparged materials entering the headspace of the headspace sampling system. The sparged materials are sensed by the sensing device thus providing material signal characteristics, which can be analyzed by the analytic device to determine characteristics of the material from the material signal characteristics and provide information about the characteristics of the material.

Headspace sampling and monitoring systems and methods

A method and apparatus for determining chemical properties. The method is based on the sequential measurement of the variation of the oscillation frequency of a single sensing device when different chemically sensitive film materials are deposited on both sides of a resonator such as a quartz crystal microbalance (QCM). Each of the sides of the resonator is sequentially exposed to an analyte while another side is exposed to a blank gas. In this way, the analyte-dependent signal from the resonator is generated only from a single film. Measurements are further made by switching the analyte stream to expose the sensing film on another side of the resonator previously exposed to a blank.

Method and apparatus for determining chemical properties

A sensor comprises a substrate and a polymeric film disposed on the substrate. The polymeric film comprises at least one hardblock component and at least one softblock component. The invention also sets forth a method for enhancing detection of a target compound by a sensor. The method comprises disposing a polymeric film on a surface of the sensor, in which the polymeric film enhances detection of target compounds not normally sensed by a sensor without the polymeric film. The polymeric film comprises at least one hardblock component and at least one softblock component.

Polymer coatings for chemical sensors

A sampling device can monitor contaminants in groundwater. The sampling device comprises a semi-permeable membrane for contact with groundwater, in which the semi-permeable membrane is permeable to contaminants and impermeable to groundwater; an inner chamber formed by the semi-permeable membrane for containing the contaminants from the groundwater that diffuse through the semi-permeable membrane; and a sensor device communicating with the inner chamber. The sensor device is in contact with the contaminants contained within the inner chamber for monitoring the contaminants.

Growing community of inventors

Clifton Park, NY, United States of America

Timothy Mark Sivavec