CATALYST TO THE TC AND TNB MEASUREMENT WITH WATER TESTS AS WELL AS ITS USE

Determining total carbon content and total nitrogen bound values of water samples, especially effluent samples, comprises combusting in oxygen stream, passing over catalyst, condensing, and measuring concentrations

Determining the total carbon content and total nitrogen bound values of water samples, especially effluent samples comprises combusting the water sample in an oxygen stream at above 700 deg C; passing over a catalyst; removing water by condensing; and investigating the carbon dioxide (CO2) concentration using IR spectrometry and the NO concentration using chemo-luminescence and a calibration curve. Uncooled gases after combustion are contacted with a catalyst to form nitrogen oxides and convert carbon compounds to CO2. An Independent claim is also included for a catalyst used for determining the total carbon content and total nitrogen bound values of water samples comprising a porous carrier material with cobalt (II/III) oxides and chromium (III) oxides formed on its surface. Preferred Features: The catalyst is fixed in an externally heated reactor between an upper and a lower layer of quartz wool. The carrier material is pumice stone having a grain size of 0.5-5.0, preferably 0.8-3.0 mm ...

Waste water total inorganic carbon value determining method involves bringing dry substrate in contact with sample of water to be tested in total inorganic carbon reaction container

Waste water total inorganic carbon value determining method involves shifting porous substrate (7) with phosphoric acid of sufficient concentration. Liquid phase is filtered off for a predetermined residence time. The moistened substrate is dried for instance 150[deg]Celsius. The dry substrate which is stored under air supply is supplied to customers and users, and brought in contact with sample of water to be tested in a total inorganic carbon (TIC) reaction container (2). Independent claims are also included for the following: (1) a total inorganic carbon material for implementing the method for determining total inorganic carbon (TIC) value; (2) an arrangement for implementing the method for determining total inorganic carbon (TIC) value.

Einspritzport für Analysengeräte, Anordnung zur Betätigung eines Einspritzports sowie Analysengerät mit einem Einspritzport

Bei einem Einspritzport für Analysengeräte, wobei der Einspritzport (10) im bestimmungsgemäßen Montagezustand an einem Analysengerät einen Zugang zu einer Analysenkammer des Analysengerätes bildet, durch den eine Kanüle eines Probengebers mit einer zu analysierenden Probe geführt werden kann, ist vorgesehen, daß der Einspritzport wenigstens ein kontrolliert öffen- und schließbares elastisches Ventilelement (24) umfaßt, mittels welchem der Zugang zur Analysenkammer sowohl bei fehlender Kanüle als auch bei durch den Einspritzport geführter Kanüle abgedichtet werden kann. Die Erfindung betrifft ferner ein mit einem entsprechenden Einspritzport versehenes Analysengerät sowie eine Anordnung zur Betätigung des Einspritzports.

Injection port for analysis appliances, device for actuating an injection port, and analysis appliance with an injection port

The invention relates to an injection port for analysis appliances, said injection port (10), when fitted correctly on an analysis appliance, forming an access line which leads to an analysis chamber of the analysis appliance and through which it is possible to guide the cannula of a sample injector containing a sample to be analysed, characterized in that the injection port comprises at least one elastic valve element (24) which can be opened and closed in a controlled manner and by means of which the access line to the analysis chamber can be sealed off both in the absence of a cannula and also when a cannula is guided through the injection port. The invention further relates to an analysis appliance provided with a corresponding injection port, and to a device for actuating the injection port.