CN105784794A - Method for calibrating hydrogen concentration of hydrogen-rich water by redox potential - Google Patents
Method for calibrating hydrogen concentration of hydrogen-rich water by redox potential Download PDFInfo
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- CN105784794A CN105784794A CN201410821393.2A CN201410821393A CN105784794A CN 105784794 A CN105784794 A CN 105784794A CN 201410821393 A CN201410821393 A CN 201410821393A CN 105784794 A CN105784794 A CN 105784794A
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Abstract
The invention relates to a method for calibrating hydrogen concentration of hydrogen-rich water by redox potential and belongs to the technical field of hydrogen water. The method is characterized by comprising the following steps: preparing hydrogen-rich water, controlling hydrogen addition amount and preparation time, discontinuously operating and preparing a series of standard samples from low hydrogen content to high hydrogen content; dividing each standard sample into two parts, and measuring a redox potential value of one standard sample by a redox potentiometer; carrying out titration by a titrant, calculating actual hydrogen concentration, repeating the above process to obtain correspondence between hydrogen concentration of hydrogen-rich water and the redox potential value, and drawing a curve chart of the correspondence between the hydrogen concentration of hydrogen-rich water and the redox potential value. A potential value of hydrogen-rich water with unknown hydrogen concentration can be measured by the use of a redox potentiometer, so as to calibrate concentration of hydrogen in water. The method of the invention is a calibration method which has advantages of simple equipment, convenient operation, reliable data and low cost. The method can be widely applied in calibration of hydrogen concentration of hydrogen-rich water.
Description
Technical field
The present invention relates to a kind of with the method for hydrogen concentration in oxidation-reduction potential demarcation hydrogen rich water, belong to hydrogen water technical field.
Background technology
Namely hydrogen rich water, as the term suggests being enriched in the water of hydrogen.Research shows, hydrogen has selective antioxidation, and for the peroxy radical that organism is harmful, hydrogen energy initiative selects in connection.Medical circle generally believes that peroxy radical is one of disease and old and feeble basic reason, this has thoroughly overthrown hydrogen and has belonged to the traditional view of physiological inert gas, the disease produced for oxidative damage provides a kind of Therapeutic Method, more the generation of prevention human body diseases and aging is provided a kind of preventive measure.
Because hydrogen has the feature of liquefaction inflammable and explosive, difficult, inconvenience accumulating, seriously limit its application in medical treatment.But, hydrogen has certain dissolubility in water, and its meltage can play the hydrogen physiologic function to people, is dissolved in by hydrogen in drinking water, is that carrier enters health by water, thus the deleterious oxidation that human body is produced because of peroxy radical plays reduction.Therefore, demarcating hydrogen concentration in hydrogen rich water is weigh the important indicator of hydrogen rich water active component.
In existing demarcation hydrogen rich water, the method for hydrogen concentration mainly has: gas chromatography, hydrogen gas sensor method and titrimetry.Wherein instrument and equipment is required significantly high by gas chromatography, is only limitted to laboratory research；Hydrogen gas sensor method input cost is bigger, it is adaptable to extreme operating condition condition；Titrimetry relates to nm-class catalyst, and reagent material is difficult to obtain, and operator and experiment equipment are required uniqueness.In a conventional method all cannot be simple, quick, economical demarcation hydrogen rich water in hydrogen concentration, it is impossible to meet being widely popularized of hydrogen rich water.
Summary of the invention
It is an object of the invention to utilize the reduction characteristic of hydrogen, it is provided that a kind of measure scaling method simple, easy to operate, that data are reliable, with low cost, can be widely applied to the demarcation of hydrogen concentration in hydrogen rich water, the promotion and application for hydrogen rich water provide foundation.
A kind of utilize oxidation-reduction potential to demarcate the method for hydrogen concentration in hydrogen rich water, specifically include following steps:
Using aeration to make hydrogen rich water, added hydrogen flowing quantity by control and pass into the hydrogen time in water, Fixed Time Interval intermittently operated samples, and makes a series of hydrogen content standard specimen from low to high.Often group standard specimen is divided into two parts, oxidation-reduction potentiometer electrode is immersed a standard specimen, reads nagative potential maximum record, be the oxidation-reduction potential value of this standard specimen；Another part of standard specimen of quantitative, uses the titrant prepared in advance to carry out titration, to determine the actual hydrogen content of this group standard specimen.Method described above repeatable operation, draws the corresponding relation between hydrogen concentration and oxidation-reduction potential value in hydrogen rich water, draws hydrogen rich water hydrogen concentration oxidation-reduction potential value corresponding relation curve chart.For the hydrogen rich water of unknown hydrogen concentration, we just can use oxidation-reduction potentiometer to measure its potential value, contrasts above-mentioned corresponding relation curve chart, thus the hydrogen concentration demarcated in this water.
Described hydrogen rich water, is met the straight water source drinking standard by pure water, mineral water, scrubbing water etc., is made by aeration, pressurization, membrane separation process or water electrolysis method and obtain, wherein the simplest, easy-operating is aeration.
Described oxidation-reduction potentiometer includes desk-top oxidation-reduction potentiometer, pen type oxidation-reduction potentiometer and industry on-line oxidation reduction potential meter, and this potentiometer is counted by electrode and mv and formed.Electrode surface platinum, gold or other inert metals cover.The hydroquinone solution calibration of PH=4 is used before measuring.
Described hydrogen rich water 20 DEG C, 1 standard atmosphere pressure oxidation-reduction potential value be 0 (-540) mV, pure water, mineral water or scrubbing water potential value be 0 (+300) mV.
Described hydrogen rich water 20 DEG C, 1 standard atmosphere pressure hydrogen concentration be 0 1.8ppm.
Described titrant is the methylene blue Platinum Nanoparticles alcoholic solution prepared by a certain percentage, judges terminal according to the metachromasia of titration, is converted into hydrogen content to drip to count.The product dissolved hydrogen concentration determining reagent that can also buy MiZ Co., Ltd. of Japan directly uses.
This method is the scaling method that a kind of equipment is simple, easy to operate, data are reliable, with low cost, can be widely applied to the demarcation of hydrogen concentration in hydrogen rich water.
Accompanying drawing explanation
Fig. 1 is hydrogen rich water hydrogen concentration oxidation-reduction potential value corresponding relation curve chart, and its abscissa is hydrogen content in hydrogen rich water, and vertical coordinate is corresponding potential value.
Detailed description of the invention
The present invention utilizes the reduction characteristic of hydrogen and the operation principle of oxidation-reduction potentiometer, establishes contacting between oxidation-reduction potential value and hydrogen concentration, so that demarcate the hydrogen concentration of hydrogen rich water with oxidation-reduction potentiometer simple and easy to get.Macroscopical oxidation-reducibility that in the measurement result reflection solution of oxidation-reduction potentiometer, all substances show, current potential is on the occasion of representing that solution demonstrates certain oxidisability, then illustrate that solution demonstrates reproducibility for negative, oxidation-reduction potential is on the occasion of more big, oxidisability is more strong, current potential negative value is more big, then reproducibility is more strong.
Detailed description of the invention is as follows:
1. oxidation-reduction potentiometer prepares: oxidation-reduction potentiometer includes desk-top oxidation-reduction potentiometer, pen type oxidation-reduction potentiometer and industry on-line oxidation reduction potential meter, the hydroquinone solution calibration of PH=4 is used before measuring, as blunt in electrode, data deviation, the available dilute hydrochloric acid solution using dehydrated alcohol wiping electrode or 0.1mol/L soaks electrode 30min and activates with decontamination, and deionized water cleans, it is standby to blot.
2. titrant prepares: by preparation methylene blue Platinum Nanoparticles alcoholic solution, methylene blue is as oxidant and titrate indicator, its proportioning mass concentration at end is 1.5-5.0 ‰, and the proportioning mass concentration at end that Platinum Nanoparticles is catalyst is 0.1-0.5 ‰, and the two is dissolved in ethanol jointly.The product dissolved hydrogen concentration determining reagent that can also buy MiZ Co., Ltd. of Japan directly uses.
3. make hydrogen rich water:, pure water, mineral water, scrubbing water etc. are met in the straight water source drinking standard by aeration, pressurization, membrane separation process or water electrolysis method and incorporate hydrogen, make and obtain hydrogen rich water.Wherein method the simplest, easy-operating is aeration.Hydrogen source is water-electrolyzing hydrogen generator, acid, alkaline hydrogen generator or hydrogen cylinder.Control to add hydrogen flowing quantity 100ml/min, 10min intermittently operated sampling in every liter of water, make a series of hydrogen content standard specimen from low to high.
4. often group standard specimen is divided into two parts, and oxidation-reduction potentiometer electrode is immersed a standard specimen, slowly stirs to stable reading, reads nagative potential maximum record, be the oxidation-reduction potential value of this standard specimen；
5. take another part of standard specimen 5 20ml, the titrant prepared in advance is dropwise instilled in standard specimen, methylene blue in titrant under the catalytic action of Platinum Nanoparticles with hydrogen generation redox reaction, titrant is become colorless transparent by blueness, consume equimolar hydrogen, just no longer disappear until blue, calculate as titration end-point using its previous number, it is determined that the actual hydrogen concentration of this group standard specimen.
6. method described above repeatable operation, until potential value and hydrogen concentration are without significant change saturated, stop logical hydrogen, passes into hydrogen time 100min.According to often organizing potential value and hydrogen concentration data, draw the corresponding relation between hydrogen concentration and oxidation-reduction potential value in hydrogen rich water.
7. repeating above experiment, repeatability is good, draws hydrogen rich water hydrogen concentration oxidation-reduction potential value corresponding relation curve chart.
8. for the hydrogen rich water of unknown hydrogen concentration, we just can use oxidation-reduction potentiometer to measure its potential value, contrast above-mentioned corresponding relation curve chart thus the hydrogen concentration demarcated in this water, for instance the hydrogen rich water of the unknown hydrogen concentration of actual measurement one 20 DEG C, 1 standard atmosphere pressure hydrogen concentration be 1.1ppm.
Claims (4)
1. demarcate the method for hydrogen concentration in hydrogen rich water with oxidation-reduction potential for one kind, it is characterised in that: measuring method comprises the following steps:
1) using hydrogen concentration in hydrogen rich water and oxidation-reduction potential value as transverse and longitudinal coordinate, the corresponding relation curve between hydrogen concentration and oxidation-reduction potential value in hydrogen rich water is drawn；
2) for the hydrogen rich water of unknown hydrogen concentration, using oxidation-reduction potentiometer to measure its potential value, the corresponding relation curve above-mentioned by comparison is thus the hydrogen concentration demarcated in this hydrogen rich water.
2. in accordance with the method for claim 1, it is characterised in that:
The drawing process of described corresponding relation curve is,
(1) making hydrogen rich water, by controlling addition hydrogen flowing quantity and the time passing into hydrogen, Fixed Time Interval in water, intermittently operated samples, and makes a series of hydrogen content standard specimen from low to high；
(2) often group standard specimen is divided into two parts, oxidation-reduction potentiometer electrode is immersed a standard specimen, reads nagative potential maximum record, be the oxidation-reduction potential value of this standard specimen；
(3) another part of standard specimen of quantitative, uses the titrant prepared in advance to carry out titration, to determine the actual hydrogen content of this group standard specimen；
(4) method described above repeatable operation, draws the corresponding relation between hydrogen concentration and oxidation-reduction potential value in hydrogen rich water, draws corresponding relation curve.
3. in accordance with the method for claim 2, it is characterised in that:
Every liter of water adds hydrogen flowing quantity: 50 500ml/min, pass into hydrogen time 30 120min, sample intermittent time 5 10min.
4. in accordance with the method for claim 2, it is characterised in that:
In hydrogen rich water hydrogen content saturated after, stop logical hydrogen, hydrogen content excursion 0 1.8ppm in standard specimen.
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336008A (en) * | 2016-08-16 | 2017-01-18 | 朱上翔 | Method for building plant antioxidant characteristic index system and application thereof |
| CN106596687A (en) * | 2016-12-14 | 2017-04-26 | 生益电子股份有限公司 | Standard solution for PCB etching redox potential detection |
| CN109382047A (en) * | 2018-10-19 | 2019-02-26 | 广州市蜗品科技有限公司 | Molten titrant for depositing density of hydrogen and preparation method thereof in a kind of superior platinum nano-sized colloidal solution of high-concentration and stable, measurement water |
Citations (4)
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| CN2225682Y (en) * | 1995-01-10 | 1996-04-24 | 电力工业部电力科学研究院 | On line monitor for detecting dissolved hydrogen in tranformer oil |
| DE19518239C2 (en) * | 1995-05-15 | 1997-04-30 | Uwe Dipl Phys Dipl I Gronowski | Device for measuring the concentration of dissolved hydrogen in aqueous media |
| WO2006091756A2 (en) * | 2005-02-24 | 2006-08-31 | The Regents Of The University Of Colorado, A Body Corporate | Mis-based sensors with hydrogen selectivity |
| CN101477076A (en) * | 2008-01-02 | 2009-07-08 | 通用电气公司 | Sensor apparatus for measuring and detecting acetylene and hydrogen dissolved in a fluid |
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2014
- 2014-12-25 CN CN201410821393.2A patent/CN105784794A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2225682Y (en) * | 1995-01-10 | 1996-04-24 | 电力工业部电力科学研究院 | On line monitor for detecting dissolved hydrogen in tranformer oil |
| DE19518239C2 (en) * | 1995-05-15 | 1997-04-30 | Uwe Dipl Phys Dipl I Gronowski | Device for measuring the concentration of dissolved hydrogen in aqueous media |
| WO2006091756A2 (en) * | 2005-02-24 | 2006-08-31 | The Regents Of The University Of Colorado, A Body Corporate | Mis-based sensors with hydrogen selectivity |
| CN101477076A (en) * | 2008-01-02 | 2009-07-08 | 通用电气公司 | Sensor apparatus for measuring and detecting acetylene and hydrogen dissolved in a fluid |
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| WEON KYUNG CHOI: "Investigations of Quantitative Reducibility Determination and Reducibility Variations of Neutral Hydrogen-Dissolved Water by Electrochemical Analysis", 《INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336008A (en) * | 2016-08-16 | 2017-01-18 | 朱上翔 | Method for building plant antioxidant characteristic index system and application thereof |
| CN106596687A (en) * | 2016-12-14 | 2017-04-26 | 生益电子股份有限公司 | Standard solution for PCB etching redox potential detection |
| CN106596687B (en) * | 2016-12-14 | 2019-03-05 | 生益电子股份有限公司 | PCB etches oxidation-reduction potential examination criteria liquid |
| CN109382047A (en) * | 2018-10-19 | 2019-02-26 | 广州市蜗品科技有限公司 | Molten titrant for depositing density of hydrogen and preparation method thereof in a kind of superior platinum nano-sized colloidal solution of high-concentration and stable, measurement water |
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Application publication date: 20160720 |