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WO2016204635A1 - Système pour collecter, traiter et analyser des données de mesure électrochimique de solutions aqueuses de composés biogènes, notamment de phosphore, d'azote et de soufre - Google Patents

Système pour collecter, traiter et analyser des données de mesure électrochimique de solutions aqueuses de composés biogènes, notamment de phosphore, d'azote et de soufre Download PDF

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Publication number
WO2016204635A1
WO2016204635A1 PCT/PL2015/000165 PL2015000165W WO2016204635A1 WO 2016204635 A1 WO2016204635 A1 WO 2016204635A1 PL 2015000165 W PL2015000165 W PL 2015000165W WO 2016204635 A1 WO2016204635 A1 WO 2016204635A1
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WO
WIPO (PCT)
Prior art keywords
electrodes
voltage
measured
electrochemical
specific
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/PL2015/000165
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English (en)
Inventor
Paweł RZYMYSZKIEWICZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nicolaus Copernicus University In Torun
Original Assignee
Nicolaus Copernicus University In Torun
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PL412731A external-priority patent/PL412731A1/pl
Priority claimed from PL413878A external-priority patent/PL413878A3/pl
Application filed by Nicolaus Copernicus University In Torun filed Critical Nicolaus Copernicus University In Torun
Publication of WO2016204635A1 publication Critical patent/WO2016204635A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G01N27/49—Systems involving the determination of the current at a single specific value, or small range of values, of applied voltage for producing selective measurement of one or more particular ionic species
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/27—Association of two or more measuring systems or cells, each measuring a different parameter, where the measurement results may be either used independently, the systems or cells being physically associated, or combined to produce a value for a further parameter

Definitions

  • the subject of the invention is a system for collecting, processing and analysing electrochemical measurement data of aqueous solutions of biogenic compounds, especially of phosphorus, nitrogen and sulphur.
  • the system can be used for controlling dispensing devices, throttles, valves, mixers, depending on concentrations of ions, which contain in particular phosphorus, nitrogen, sulphur or their changes in time .
  • the essence of the system is the fact that it contains a set of electrochemical sensors, which are a set of electrodes, especially mechanical ones - Ag, Au, Pt, Ir, Rh, Ni, Co, Cu, adapted to the specific environment, in which the measurement is performed, the control system with built-in software, a data-processing system and a communication module.
  • a set of electrochemical sensors which are a set of electrodes, especially mechanical ones - Ag, Au, Pt, Ir, Rh, Ni, Co, Cu, adapted to the specific environment, in which the measurement is performed, the control system with built-in software, a data-processing system and a communication module.
  • Each chemical sensor can operate in two modes potentiometric and voltamperometric.
  • the potentiometric mode no voltage is applied to the electrodes and the sensor measures potentials occurring on each electrode, which are induced by the specific environment surrounding the electrodes, while in the voltamperometric mode, the voltage is supplied to a selected electrode or several electrodes at the same time using a potentiostat, while the current is measured on the other ones.
  • the values of apply voltage change in time in accordance with the algorithm-defined control system of the sensors, which designates to which electrodes the voltage should be applied and on which electrode the current should be measured, simultaneously programming changes in their time.
  • a further essential element, according to the invention, is the fact that the voltage, which is variable in time, is applied to the electrode system, thus creating the so-called voltametric series.
  • the current flowing between individual electrodes, which is the response to voltage-inducing electrochemical reactions, is measured at specific time intervals using an amplifying circuit with a very low carrying capacity value.
  • the voltametric series corresponds to reaction inducement potentials on the individual electrodes. All potentials are measured in relation to the selected reference point .
  • the reference point was set at 0 mV in the reference point in the series to make the result independent of the selection of the reference system, e.g. in the form of the appropriate electrode - SHE, NHE, RHE, SCE, CSE, DHE, etc.).
  • Each impulse lasts 100ms, while individual voltametric impulses have the following subsequent values: 179mV, -671mV, 359mV, -541mV, -91mV, -211mV, 159mV, 509mV.
  • the resting phase before and after the series is set at the reference level (here: OmV) .
  • the voltametric series begins by a resting signal, which is equal to the reference electrode voltage. After 100 ms, the potential threshold for a weak orthophosphate reaction on the copper electrode is provided. Next, a supplementary peak is provided which induces a relatively strong ammonium reaction on the copper electrode. Peak No. 3 corresponds to a phosphate reaction of medium intensity on the nickel electrode. Peak No. 4 supplements peak no. 1 and it causes a strong orthophosphate reaction on the copper electrode, while peak no. 5 allows ammonium measurements on the gold electrode. Peak no. 6 again corresponds to weak orthophosphate reaction on the copper electrode (supplementary information increasing the analytical space) like peak no. 1, while peak no. 7 again reproduces a weak phosphate reaction on the copper electrode. Peak no.
  • Data obtained from individual sensors is sent to the processing system where it is stored and analysed using built- in software, which classifies them and assigns them to appropriate sets using, in particular, classifiers of the k- NN, SRDA, FDA types.
  • the analytical results obtained are transmitted in the form of specific control signal by the communication module to dedicated external devices.
  • the system has an advantage over close adjustment of mathematical models to registered signals in the fact that it is capable of filtering only patterns, which can be associated with specific phenomena, for example with electrochemical reactions.
  • close adjustments e.g. Partial Least Squares
  • a lot of data measured may cause erroneous adjustment of models and, thus, incorrect results as regards concentrations.
  • What is important, a lot of technological processes do not require exact measurements of concentrations, but only determination of their appropriate threshold (from-to range values), which make it possible to set various parameters of the technological process (e.g. the addition of active substances) .
  • the system makes it possible to use complex analytical methods for measured data recorded in the form of time series sets (time-value systems, also in impulse lines.
  • time-value systems also in impulse lines.
  • these are, amongst other things, analytical algorithms based on wavelets and kernel methods, which allow pattern extraction related to specific phenomena, e.g. specific chemical reactions.
  • pattern extraction related to specific phenomena e.g. specific chemical reactions.
  • classification with the use of various classifiers is used, e.g. k-NN, SRDA, or FDA.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)

Abstract

L'invention concerne un système pour collecter, traiter et analyser des données mesurées provenant de mesures électrochimiques de solutions aqueuses de composés biogènes, notamment de phosphore, d'azote et de composés contenant du soufre, contenant un ensemble de capteurs électrochimiques qui sont un ensemble d'électrodes, en particulier faites de Ag, Au, Pt, Ir, Rh, Ni, Co ou Cu, adaptées à l'environnement spécifique dans lequel la mesure est effectuée, un système de commande ayant un logiciel intégré, un système de traitement de données et un module de communication ; chaque capteur électrochimique peut fonctionner dans deux modes - le mode potentiométrique et le mode voltampérométrique, dans le mode potentiométrique, aucune tension n'est appliquée aux électrodes et le capteur mesure des potentiels se produisant sur chacune d'elles, qui sont induits par l'environnement spécifique entourant les électrodes, tandis que dans le mode voltampérométrique, une tension est fournie à une électrode sélectionnée ou à plusieurs électrodes en même temps à l'aide d'un potentiostat, tandis que le courant est mesuré sur les autres, et les valeurs de tension appliquée sont changées dans le temps en conformité avec un algorithme spécifique par le système de commande qui désigne à quelles électrodes la tension doit être appliquée et sur lesquelles le courant doit être mesuré.
PCT/PL2015/000165 2015-06-16 2015-10-14 Système pour collecter, traiter et analyser des données de mesure électrochimique de solutions aqueuses de composés biogènes, notamment de phosphore, d'azote et de soufre Ceased WO2016204635A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PL412731A PL412731A1 (pl) 2015-06-16 2015-06-16 System kolekcjonowania, przetwarzania i analizy danych pomiarowych pochodzących z pomiarów elektrochemicznych wodnych roztworów związków pierwiastków biogennych, zwłaszcza fosforu, azotu i siarki
PLP.412731 2015-06-16
PLP.413878 2015-09-09
PL413878A PL413878A3 (pl) 2015-09-09 2015-09-09 System kolekcjonowania, przetwarzania i analizy danych pomiarowych pochodzących z pomiarów elektrochemicznych wodnych roztworów związków pierwiastków biogennych, zwłaszcza fosforu, azotu i siarki

Publications (1)

Publication Number Publication Date
WO2016204635A1 true WO2016204635A1 (fr) 2016-12-22

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PCT/PL2015/000165 Ceased WO2016204635A1 (fr) 2015-06-16 2015-10-14 Système pour collecter, traiter et analyser des données de mesure électrochimique de solutions aqueuses de composés biogènes, notamment de phosphore, d'azote et de soufre

Country Status (1)

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WO (1) WO2016204635A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020227775A1 (fr) * 2019-05-16 2020-11-19 La Trobe University Systèmes et procédés de détermination d'analyte

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7566392B2 (en) * 2006-04-12 2009-07-28 Dionex Corporation Pulsed electrochemical detection method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7566392B2 (en) * 2006-04-12 2009-07-28 Dionex Corporation Pulsed electrochemical detection method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ASTRID HILDING-OHLSSON ET AL: "Voltamperometric Discrimination of Urea and Melamine Adulterated Skimmed Milk Powder", SENSORS, vol. 12, no. 9, 5 September 2012 (2012-09-05), CH, pages 12220 - 12234, XP055265939, ISSN: 1424-8220, DOI: 10.3390/s120912220 *
HOLMIN S ET AL: "Compression of electronic tongue data based on voltammetry - a comparative study", SENSORS AND ACTUATORS B: CHEMICAL, ELSEVIER, AMSTERDAM, NL, vol. 76, no. 1-3, 1 June 2001 (2001-06-01), pages 455 - 464, XP004241157, ISSN: 0925-4005, DOI: 10.1016/S0925-4005(01)00585-8 *
OLSSON J ET AL: "Determination of detergents in washing machine wastewater with a voltammetric electronic tongue", TALANTA, ELSEVIER, AMSTERDAM, NL, vol. 76, no. 1, 30 June 2008 (2008-06-30), pages 91 - 95, XP022664002, ISSN: 0039-9140, [retrieved on 20080229], DOI: 10.1016/J.TALANTA.2008.02.028 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020227775A1 (fr) * 2019-05-16 2020-11-19 La Trobe University Systèmes et procédés de détermination d'analyte
US12253491B2 (en) 2019-05-16 2025-03-18 La Trobe University Systems and methods for analyte determination

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