Abstract:
액체 내 소듐 검출 장치가 개시된다. 개시된 본 발명은 본 발명은 온도에 따른 측정기선의 변화 및 이로 인한 측정 농도의 변화를 보정하고 잡음의 영향을 최소화함으로써, 극미한 소듐 농도를 반복적으로 정확하게 측정한다. 따라서, 본 발명의 액체 내 소듐 검출 장치에 의하면, 온도 변화 및 잡음의 영향을 최소화하여 농도 측정의 정확성 및 이의 측정 기준이 되는 기선의 안정성을 확보함으로써, 극미한 소듐의 농도를 반복적으로 정확하게 측정할 수 있다.
Abstract:
This disclosure relates to sulfur sensors that utilize sensing materials that can be used to detect ultra low concentrations of sulfur in liquids, such as below even 15 ppm. The sulfur sensors comprise a sensing electrode having a material that contributes an electrical element to the analysis and a material that contributes an ionic element to the analysis.
Abstract:
Devices for detecting an analyte comprising a redox active analyte sensitive material on a working electrode and computer assisted signal acquisition and processing.
Abstract:
Группа изобретений относится к области измерительной техники. Способ определения активности ионов натрия и работа устройства для его осуществления основаны на дозировании в среду подщелачивающего реагента и определении разности потенциалов между индикаторным (6) и опорным (7) электродами. В качестве последнего используют рН- электрод, измеряют разность потенциалов индикаторного (6) и опорного (7) электродов относительно вспомогательного электрода (8) и находят разность потенциалов между индикаторным (6) и опорным (7) электродами как разность между измеренными разностями потенциалов. Дополнительно измеряют электропроводность среды, в которую добавлен подщелачивающий реагент. Искомое значение активности ионов натрия определяют по зависимости, связывающей ее с разностью потенциалов между индикаторным и опорным электродами и электропроводностью. Технический результат: повышение точности и стабильности измерения малых концентраций натрия в средах с малой электропроводностью, а также снижение эксплуатационных затрат.
Abstract:
Die Erfindung bezieht sich auf einen elektrochemischen Sensor (10) zur Ermittlung einer Konzentration mindestens eines Analyten in einem Medium, insbesondere einem Körpergewebe und/oder einer Körperflüssigkeit, eine Vorrichtung, die den elektrochemischen Sensor enthält, sowie eine Verwendung des elektrochemischen Sensors (10) und schließlich ein Verfahren zu dessen Herstellung. Der elektrochemische Sensor (10) weist ein Isolationsprofil (32) und mindestens zwei Elektroden (16, 18, 20) auf. Die mindestens zwei Elektroden (16, 18, 20) umfassen mindestens eine Arbeitselektrode (16) und mindestens eine weitere Elektrode (18, 20), insbesondere mindestens eine Gegenelektrode (18) und/oder mindestens eine Referenzelektrode (20). Die mindestens zwei Elektroden (16, 18, 20) verlaufen parallel zueinander und bilden eine elektrochemische Messzelle des elektrochemischen Sensors.
Abstract:
A sensor system and method for measuring the concentration, or indicating the presence or presence at a predetermined level of, a target contaminant species in an aqueous medium are described. The system is based upon a sensor element having a sample receiving area for receiving a sample of aqueous medium to be sampled and which comprises at least three electrodes each comprising a layer of conductor deposited upon an insulating substrate. The system also includes a power source to apply a pre-determined potential difference across two of the electrodes determined by the potential associated with an electrochemical reaction characteristic of the target species, and output means to output data corresponding to the current generated thereby when a sample is in place on the sampling area.
Abstract:
The invention relates to a method for adjusting the dosage of reaction components in a continuous azoic coupling reaction, characterized in that the redox potential of the reaction mixture is measured online in the main flow after it exits from a continually operated reactor in a flow measurement cell with the aid of a rotating redox electrode which is arranged crosswise in relation to the direction of flow of the reaction mixture. The invention also relates to a flow measurement cell for carrying out said method, characterized by the following: a rotating redox electrode (1) which is arranged approximately in the middle of the flow pipe (2) of the flow measurement cell in a crosswise position with relation to the direction of flow of the reaction mixture and rotatably mounted in a sliding contact (3) for picking up a signal; a rod-shaped body (4) which enters into contact with the rotating redox electrode and which has a cleaning effect; a reference electrode (5) and a pH electrode (6).
Abstract:
An analytic instrument (10) for measuring the concentration of substances in solution (22) defines a Gran function relating the potential measured by an ion specific electrode (20) to the concentration of the substance in the solution (22). The function is defined by the actual measured potentials, together with the reaction type designated by the user. Means are provided to create, alter, and ultimately store a group of predefined analysis methods incorporating different analysis techniques and analysis parameters to thereby accumulate a series of analytic methods individually adapted to the user and providing the optimum analytic method for the particular substances measured by the user.
Abstract:
The invention is directed to electrochemical detection systems, components thereof, materials and methods for making the systems and components thereof, and methods for detecting analytes with the systems. The systems include electrochemical cells containing hydrogels. The hydrogels include polymers with amine-containing pendant groups. The polymers can be cross-linked via the amine-containing pendant groups. The polymers can also or alternatively include enzymes and/or electron shuttles tethered thereto via amine-containing pendant groups. Monomers for making the polymers are provided. The systems can be used to detect analytes such as glucose.