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Analysis

1 / 1
1.102014107552Vorrichtung und Verfahren zur quantitativen Bestimmung von Metall-Ionen in Wasser
DE - 03.12.2015
Int.Class G01N 33/18
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
18Water
 Appl.No 102014107552 Applicant Pevestorff Luise Inventor Pevestorff Luise

Die erfindungsgemäße Vorrichtung und das Verfahren zur quantitativen Bestimmung von Metall-Ionen findet Anwendung in der Wasseranalyse. Aufgabe der Erfindung ist es, ein Gerät zu entwickeln, das auf quantitative Weise die Konzentration und Art von Ionen im Wasser bestimmt. Das Messgerät soll standardisierte Bedingungen erfüllen, möglichst geringe Materialkosten beinhalten, kompakt und transportabel sowie leicht mit einem herkömmlichen mobilen Endgerät zu bedienen sein. Um positive Metallionen nachweisen zu können, werden Salze verwendet, um die entsprechenden Ionen zu erhalten. Erfindungsgemäß wird die Aufgabe durch eine Vorrichtung zur quantitativen Bestimmung von Metall-Ionen in Wasser gelöst, die dadurch gekennzeichnet, dass zwischen zwei sich gegeneinander drehenden Scheiben eine Elektrodeneinheit angeordnet ist. Die Elektrodeneinheit steht mit beiden Scheiben in Wirkverbindung, so dass ein Probenkörper, welcher in der ersten Scheibe gehalten wird, mit einer stromdurchflossenen Elektrode der Elektrodeneinheit verbunden ist. Eine optische Auswerteinheit ist an oder in der Elektrodeneinheit angeordnet.

2.2095108IMPROVED WATER ANALYSIS
EP - 02.09.2009
Int.Class G01N 33/18
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
18Water
 Appl.No 07845425 Applicant AQUA DIAGNOSTIC PTY LTD Inventor ZHAO HUIJUN
A method of determining chemical oxygen demand (COD) of a water sample which is useful in a probe configuration includes the steps of a) applying a constant potential bias to a photoelectrochemical cell, having a photoactive working electrode optionally a reference electrode and a counter electrode, and containing a supporting electrolyte solution; b) illuminating the working electrode with a light source and recording the background photocurrent produced at the working electrode from the supporting electrolyte solution; c) adding a water sample, to be analysed, to the photoelectrochemical cell; d) illuminating the working electrode with a light source and recording the steady state photocurrent produced with the sample; e) determining the chemical oxygen demand of the water sample using the formula (I): where δ is the Nernst diffusion layer thickness, D is the diffusion coefficient, A is the electrode area, F the Faraday constant and iss the steady state photocurrent. The method can accommodate a broad range of light intensity and pH.
3.2135071IMPROVED ONLINE WATER ANALYSIS
EP - 23.12.2009
Int.Class G01N 33/18
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
18Water
 Appl.No 07845426 Applicant AQUA DIAGNOSTIC PTY LTD Inventor ZHAO HUIJUN
A method of determining chemical oxygen demand (COD) of a water sample, which is useful in an on-line configuration comprising the steps of a) applying a constant potential bias to a photoelectrochemical cell, having a photoactive working electrode, optionally a reference electrode and a counter electrode, and containing a supporting electrolyte solution; b) illuminating the working electrode with a light source and recording the background photocurrent produced at the working electrode from the supporting electrolyte solution; c) adding a water sample, to be analysed, to the photoelectrochemical cell; d) illuminating the working electrode with a light source and recording the hydro dynamic photocurrent produced under continuous flow of the water to be analysed; e) determining the chemical oxygen demand of the water sample using a number of different formulae. The applied potential is preferably from -0.4 to + O.8V more preferably about +0.3V. The method is applicable to water samples in the pH range of 2 to 10. An injection volume of 13&mgr;L is preferred. A preferred flow rate is 0.3mL/min.
4.0135098REAGENT FOR DETERMINING WATER WITH A KARL FISCHER REAGENT
EP - 27.03.1985
Int.Class G01N 31/00
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
31Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroups; Apparatus specially adapted for such methods
 Appl.No 84109275 Applicant RIEDEL-DE HAEN AKTIENGESELLSCHAFT Inventor SCHOLZ, EUGEN, DR.
The determination of water by the Karl Fischer method is carried out using a reagent containing sulfur dioxide, iodine and a base. The determination is carried out in a liquid medium in which the sample under investigation has been dissolved. The solvents used are, above all, methanol and 2-methoxyethanol. The presence of a further solvent which enables the reaction to take place without interference is advantageous. Solvents suitable for this purpose are lower alkanols which are substituted by halogen atoms and/or phenyl radicals. These alkanols are also employed as the solvent in Karl Fischer reagents.
5.0901625PROCESS AND DEVICES FOR CHARACTERISING GROUND WATER MEASUREMENT POINTS BY DISTINGUISHING GROUND WATER FROM SUBTERRANEAN WATER ACCUMULATION
EP - 17.03.1999
Int.Class E21B 47/10
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
47Survey of boreholes or wells
10Locating fluid leaks, intrusions or movements
 Appl.No 97923885 Applicant UFZ LEIPZIGHALLE GMBH Inventor DEHNERT JOERG
The invention describes a method and apparatuses for characterizing groundwater measuring sites by differentiating between groundwater and static water and serves, for example, for determining the pumping-out times of groundwater measuring sites, optimum for investigations of the representative nature, as well as for identifying and localizing defects at groundwater measuring sites. The invention is based on measuring the radon activity concentration or the total activity concentration of the groundwater samples. The measurement of the concentrations by offline or online methods permits the ratio of groundwater to static water in a groundwater measuring site to be determined reliably. A novel flow-through measurement cell, as well as a borehole probe are described. The invention can be employed wherever investigations of the nature of groundwater are carried out.
6.1581813AUTOMATED REGRESSION ANALYSIS AND ITS APPLICATIONS SUCH AS WATER ANALYSIS
EP - 05.10.2005
Int.Class G01N 27/10
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
02by investigating impedance
04by investigating resistance
06of a liquid
08which is flowing continuously
10Investigation or analysis specially adapted for controlling or monitoring operations or for signalling
 Appl.No 03797925 Applicant METTES JACOB Inventor METTES JACOB
Methods and instrumentation based on the concept of an “Absolute Principle” are relatively rare but, when applicable, offer some very unique advantages. This patent teaches how to automate the use of non-linear curve fitting to widen this concept enabling the determination of multiple properties instead of typically only a single entity as well as dealing systematically with more complex relationships between entities. As a possible application, the invention further deals with analyzing the composition of water regarding inorganic as well as organic species and the use hereto of conductivity measurements as a function of temperature or the mixing ratio with another fluid.
7.102012102658Elektromechanisches Füllstandmessgerät nach dem Verdrängerprinzip oder Senklotprinzip zur Bestimmung des Füllstands eines Füllguts in einem Behälter
DE - 04.07.2013
Int.Class G01F 23/04
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
04by dip members, e.g. dip-sticks
 Appl.No 102012102658 Applicant Endress + Hauser GmbH + Co. KG Inventor Kaiser Andreas

Die Erfindung beinhaltet ein elektromechanisches Füllstandmessgerät nach dem Verdrängerprinzip oder Senklotprinzip zur Bestimmung des Füllstands eines Füllguts in einem Behälter, enthaltend eine Seiltrommel; ein Seil, das mit einem festen Ende an der Seiltrommel befestigt und von der Seiltrommel auf- und abwickelbar ist; ein Verdrängerelement, das mit einem freien Ende des Seiles verbunden ist; einen Motor, der die Seiltrommel zum Aufwickeln und Abwickeln des Seiles mit dem Verdrängerelement antreibt, eine Hauptelektronik, die zumindest die Steuerung des Motors und zumindest die Auswertung des Füllstands aus den Bewegungsänderungen der Seiltrommel bestimmt. Die Erfindung sieht vor, dass im Verdrängerelement zumindest eine zusätzliche Sensoreinheit mit zumindest einem Sensorelement zur Bestimmung und/oder Überwachung weiterer Prozessmessgrößen des Füllguts im Behälter integriert ist.

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