{"id":2243,"date":"2022-10-14T02:39:04","date_gmt":"2022-10-14T02:39:04","guid":{"rendered":"https:\/\/www.ionfarms.com\/?p=2243"},"modified":"2022-11-10T04:47:56","modified_gmt":"2022-11-10T04:47:56","slug":"oxidation-reduction-potential","status":"publish","type":"post","link":"https:\/\/ionfarms.com\/fr\/blog\/potentiel-doxydoreduction\/","title":{"rendered":"Potentiel d'oxydor\u00e9duction"},"content":{"rendered":"
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Potentiel d'oxydo-r\u00e9duction (ORP)<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Qu'est-ce que le potentiel d'oxydor\u00e9duction ? <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Le potentiel d'oxydo-r\u00e9duction (ORP) mesure la capacit\u00e9 d'un lac ou d'une rivi\u00e8re \u00e0 se nettoyer ou \u00e0 d\u00e9composer les d\u00e9chets, tels que les contaminants et les plantes et animaux morts.<\/p>

Lorsque la valeur ORP est \u00e9lev\u00e9e, il y a beaucoup d'oxyg\u00e8ne pr\u00e9sent dans l'eau. Cela signifie que les bact\u00e9ries qui d\u00e9composent les tissus morts et les contaminants peuvent travailler plus efficacement.<\/p>

En g\u00e9n\u00e9ral, plus la valeur ORP est \u00e9lev\u00e9e, plus le lac ou la rivi\u00e8re est sain.<\/p>

Cependant, m\u00eame dans les lacs et les rivi\u00e8res en bonne sant\u00e9, il y a moins d'oxyg\u00e8ne (et donc des valeurs ORP plus faibles) \u00e0 mesure que vous vous rapprochez des s\u00e9diments du fond (boue\u00a0; voir l'image ci-dessous d'un fond de lac).<\/p>

En effet, de nombreuses bact\u00e9ries travaillent dur dans les s\u00e9diments pour d\u00e9composer les tissus morts et consomment une grande partie de l'oxyg\u00e8ne disponible.<\/p>

En fait, l'oxyg\u00e8ne dispara\u00eet tr\u00e8s rapidement dans la boue du fond (souvent \u00e0 moins d'un centim\u00e8tre ou deux) et l'ORP chute rapidement. L'ORP est mesur\u00e9 en plus de l'oxyg\u00e8ne dissous car l'ORP peut fournir aux scientifiques des informations suppl\u00e9mentaires sur la qualit\u00e9 de l'eau et le degr\u00e9 de pollution, le cas \u00e9ch\u00e9ant.<\/p>

En outre, il existe d'autres \u00e9l\u00e9ments qui peuvent fonctionner comme l'oxyg\u00e8ne (en termes de chimie) et contribuer \u00e0 augmenter l'ORP.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Pourquoi le potentiel d'oxydo-r\u00e9duction est-il important ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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L'ORP d\u00e9pend de la quantit\u00e9 d'oxyg\u00e8ne dissous dans l'eau, ainsi que du nombre d'autres \u00e9l\u00e9ments qui fonctionnent de mani\u00e8re similaire \u00e0 l'oxyg\u00e8ne.<\/p>

Bien que ce ne soit pas techniquement correct, l'oxyg\u00e8ne et d'autres \u00e9l\u00e9ments qui contribuent \u00e0 un ORP \u00e9lev\u00e9 aident efficacement \u00e0 \u00abmanger\u00bb des choses que nous ne voulons pas dans l'eau, telles que des contaminants et des tissus morts.<\/p>

Lorsque l'ORP est bas, l'oxyg\u00e8ne dissous est bas, la toxicit\u00e9 de certains m\u00e9taux et contaminants peut augmenter, et il y a beaucoup de mati\u00e8res mortes et en d\u00e9composition dans l'eau qui ne peuvent pas \u00eatre \u00e9limin\u00e9es ou d\u00e9compos\u00e9es.<\/p>

Ce n'est pas un environnement sain pour les poissons ou les insectes.<\/p>

Dans des eaux saines, l'ORP devrait \u00eatre \u00e9lev\u00e9 entre 300 et 500 millivolts.<\/p>

Dans le Nord, on pourrait s'attendre \u00e0 un ORP faible dans les eaux qui re\u00e7oivent des apports d'eaux us\u00e9es ou des d\u00e9chets industriels.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"oxydation\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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[Oxydants = Endommager les cellules]<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"antioxydants\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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[Antioxydants = Prot\u00e9ger les Cellules]<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Comment mesure-t-on le potentiel d'oxydo-r\u00e9duction ? <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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L'ORP est mesur\u00e9 directement dans l'eau du lac ou de la rivi\u00e8re que vous \u00e9tudiez \u00e0 l'aide d'un capteur ORP.<\/p>

L'ORP est mesur\u00e9 en millivolts (mV) et plus il y a d'oxyg\u00e8ne pr\u00e9sent dans l'eau, plus la lecture de l'ORP est \u00e9lev\u00e9e.<\/p>

L'ORP peut \u00eatre sup\u00e9rieur \u00e0 z\u00e9ro ou inf\u00e9rieur \u00e0 z\u00e9ro.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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R\u00e9f\u00e9rences Pour plus d'informations<\/p>

Hamasaki, Takeki et al. "L'eau \u00e9lectrochimiquement r\u00e9duite exerce une activit\u00e9 de pi\u00e9geage des esp\u00e8ces r\u00e9actives de l'oxyg\u00e8ne sup\u00e9rieure dans les cellules HT1080 au niveau \u00e9quivalent d'eau dissoute dans l'hydrog\u00e8ne." PLoS One, vol. 12, non. 2, 2017. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/28182635<\/a> Hanaoka, Kokichi et al. "Le m\u00e9canisme des effets antioxydants am\u00e9lior\u00e9s contre les radicaux anion superoxyde de l'eau r\u00e9duite produite par \u00e9lectrolyse." Chimie biophysique, vol. 107, non. 1, 2004, p. 71-82. https:\/\/www.ncbi.nlm.nih.gov\/pubmed<\/a>\/14871602 Hanaoka, K. "Effets antioxydants de l'eau r\u00e9duite produite par \u00e9lectrolyse de solutions de chlorure de sodium." Journal d'\u00e9lectrochimie appliqu\u00e9e, vol. 31, non. 12, 2001, pages 1307-1313. https:\/\/link.springer.com\/article\/10.1023\/A:1013825009701 Huang, Kuo-Chin, et al. "R\u00e9duction du stress oxydatif induit par l'h\u00e9modialyse chez les patients atteints d'insuffisance r\u00e9nale terminale par l'eau r\u00e9duite \u00e9lectrolys\u00e9e." Rein International, vol. 64, non. 2, 2003, p. 704\u2013714. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/12846769<\/a> Keramati Yazdi, Fatemeh, et al. "Effet radioprotecteur de l'eau de Zamzam (alcaline): une \u00e9tude cytog\u00e9n\u00e9tique." Journal de la radioactivit\u00e9 environnementale, vol. 167, 2017, p. 166-169. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/27839844 Lee, Mi Young, et al. "L'eau \u00e9lectrolys\u00e9e r\u00e9duite prot\u00e8ge contre les dommages oxydatifs de l'ADN, de l'ARN et des prot\u00e9ines." Biochimie appliqu\u00e9e et biotechnologie, vol. 135, non. 2, 2006, p. 133-144. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/17159237<\/a> Shirahata, Sanetaka, et al. "L'eau \u00e9lectrolys\u00e9e r\u00e9duite r\u00e9cup\u00e8re les esp\u00e8ces d'oxyg\u00e8ne actif et prot\u00e8ge l'ADN des dommages oxydatifs." Communications de recherche biochimique et biophysique, vol. 234, non. 1, 1997, p. 269\u2013274. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/9169001<\/a> Yanagihara, Tomoyuki, et al. "L'eau \u00e9lectrolys\u00e9e satur\u00e9e en hydrog\u00e8ne pour la consommation provoque un effet antioxydant: un test d'alimentation avec des rats." Bioscience, biotechnologie et biochimie, vol. 69, non. 10, 2005, pages 1985-1987. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/16244454<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Oxidation-Reduction Potential (ORP) What is oxidation-reduction potential? Oxidation-reduction potential (ORP) measures the ability of a lake or river to cleanse itself or break down waste products, such as contaminants and dead plants and animals. When the ORP value is high, there is lots of oxygen present in the water. This means that bacteria that decompose dead tissue and contaminants can work more efficiently. In general, the higher the ORP value, the healthier the lake or river is. However, even in healthy lakes and rivers, there is less oxygen (and therefore lower ORP values) as you get closer to the bottom sediments (mud; see the picture below of a lake bottom). This is because there are many bacteria working hard in the sediments to decompose dead tissue, and they use up a lot of the available oxygen. In fact, oxygen disappears very quickly in the bottom mud (often within a centimeter or two) and ORP falls quickly. ORP is measured in addition to dissolved oxygen because ORP can provide scientists with additional information of the water quality and degree of pollution, if present. Also, there are other elements that can function like oxygen (in terms of chemistry) and contribute to increased ORP. Why does oxidation-reduction potential matter? ORP depends on the amount of dissolved oxygen that is in the water, as well as the number of other elements that function similarly to oxygen. Though not technically correct, oxygen and other elements that contribute to high ORP effectively help \u2018eat\u2019 things that we don\u2019t want in the water \u2013 such as contaminants and dead tissues. When ORP is low, dissolved oxygen is low, the toxicity of certain metals and contaminants can increase, and there is lots of dead and decaying material in the water that cannot be cleared or decomposed. This is not a healthy environment for fish or bugs. In healthy waters, ORP should read high between 300 and 500 millivolts. In the North, we might expect low ORP in waters that receive sewage inputs or industrial waste. [Oxidants = Damaging Cells] [Antioxdidants = Protecting Cells] How do we measure oxidation-reduction potential? ORP is measured directly in the lake or river water that you are investigating using an ORP sensor. ORP is measured in millivolts (mV) and the more oxygen that is present in the water, the higher the ORP reading is. ORP can either be above zero or below zero. References For More Information Hamasaki, Takeki, et al. \u201cElectrochemically Reduced Water Exerts Superior Reactive Oxygen Species Scavenging Activity in HT1080 Cells Than the Equivalent Level of Hydrogen-dissolved Water.\u201d PLoS One, vol. 12, no. 2, 2017. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/28182635 Hanaoka, Kokichi, et al. \u201cThe Mechanism of the Enhanced Antioxidant Effects Against Superoxide Anion Radicals of Reduced Water Produced by Electrolysis.\u201d Biophysical Chemistry, vol. 107, no. 1, 2004, pp. 71-82. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/14871602 Hanaoka, K. \u201cAntioxidant Effects of Reduced Water Produced by Electrolysis of Sodium Chloride Solutions.\u201d Journal of Applied Electrochemistry, vol. 31, no. 12, 2001, pp. 1307-1313. https:\/\/link.springer.com\/article\/10.1023\/A:1013825009701 Huang, Kuo-Chin, et al. \u201cReduced Hemodialysis-Induced Oxidative Stress in End-Stage Renal Disease Patients by Electrolyzed Reduced Water.\u201d Kidney International, vol. 64, no. 2, 2003, pp. 704\u2013714. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/12846769 KeramatiYazdi, Fatemeh, et al. \u201cRadioprotective Effect of Zamzam (Alkaline) Water: A Cytogenetic Study.\u201d Journal of Environmental Radioactivity, vol. 167, 2017, pp. 166-169. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/27839844 Lee, Mi Young, et al. \u201cElectrolyzed-Reduced Water Protects Against Oxidative Damage to DNA, RNA, and Protein.\u201d Applied Biochemistry and Biotechnology, vol. 135, no. 2, 2006, pp. 133-144. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/17159237 Shirahata, Sanetaka, et al. \u201cElectrolyzed\u2013Reduced Water Scavenges Active Oxygen Species and Protects DNA from Oxidative Damage.\u201d Biochemical and Biophysical Research Communications, vol. 234, no. 1, 1997, pp. 269\u2013274. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/9169001 Yanagihara, Tomoyuki, et al. \u201cElectrolyzed Hydrogen-Saturated Water for Drinking Use Elicits an Antioxidative Effect: A Feeding Test with Rats.\u201d Bioscience, Biotechnology, and Biochemistry, vol. 69, no. 10, 2005, pp. 1985-1987. https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/16244454<\/p>","protected":false},"author":4,"featured_media":2316,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[39],"tags":[31,40,36,37],"class_list":["post-2243","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-water-ionizer","tag-alkaline-water","tag-antioxtidants","tag-orp","tag-oxidation-reduction-potential"],"_links":{"self":[{"href":"https:\/\/ionfarms.com\/fr\/wp-json\/wp\/v2\/posts\/2243"}],"collection":[{"href":"https:\/\/ionfarms.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ionfarms.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ionfarms.com\/fr\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/ionfarms.com\/fr\/wp-json\/wp\/v2\/comments?post=2243"}],"version-history":[{"count":0,"href":"https:\/\/ionfarms.com\/fr\/wp-json\/wp\/v2\/posts\/2243\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ionfarms.com\/fr\/wp-json\/wp\/v2\/media\/2316"}],"wp:attachment":[{"href":"https:\/\/ionfarms.com\/fr\/wp-json\/wp\/v2\/media?parent=2243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ionfarms.com\/fr\/wp-json\/wp\/v2\/categories?post=2243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ionfarms.com\/fr\/wp-json\/wp\/v2\/tags?post=2243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}