Phenol-sodium hypochlorite colorimetry

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August undefined, 2024

Websodium phenol-sodium hypochlorite colorimetry, permanganimetricmethod,andP-nitrophenyl disodiumphos-phate colorimetric method, respectively. Soil microbial activities Asdescribed byVanceetal. (1987),procedures wereutilized Web5. okt 2024 · NH 4 + was determined by phenol–sodium hypochlorite colorimetry at 625 nm, as described by Broderick and Kang . Off-line determination of glucose, oil and SLs concentrations in SLs fermentation. Glucose concentration in the broth was analyzed by the method as above mentioned.

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WebSodium hypochlorite, the active ingredient in chlorine bleach, is routinely used in the laboratory to decontaminate surfaces and equipment or deactivate biological materials by inactivating vegetative bacteria, fungi, lipid and non-lipid viruses, and other liquid specimens. Bleach is very reactive and if it mixes with incompatible chemicals, it ... Websodium hydroxide solution and treated with alkaline phenol reagent and sodium hypochlorite reagent. This treatment forms a blue color designated as indophenol. … peterchor

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WebSuitable for the colorimetric determination of ammonia using alkaline hypochlorite (A1727) solution as used in urea nitrogen assays Other Notes Contains sodium nitroprusside, … WebThe optimum concentration of hypochlorite is five times greater with salicylate than with phenol, and for the catalyst, sodium nitroprusside, the factor is two. The precision … Web28. jan 2024 · The mean annual precipitation is 289 mm, and the mean annual evaporation is 2132 mm. The average temperature ranges from − 8.9 °C in January to 22.5 °C in July. The major soil type is Aridisol (Food and Agriculture Organization of the United Nations Classification System, FAO Classification System). starke county gis

A Colorimetric Approach to Hypochlorite Bleach Analysis

Phenate Method for determination of NH4-N - ResearchGate

Web12. jan 2024 · The urease activity was analyzed using the phenol-sodium hypochlorite colorimetric method. In brief, 10 mL of 10% urea solution and 20 mL of citrate buffer (pH 6.7) were added to a 50 mL conical flask that contained 5 g of soil. After 24 h of incubation at 37°C, the suspension was filtered, and then 0.5 mL of the filtrate was added to a 50 mL ... Web20. jan 2024 · Soil sucrase activity was measured by the 3,5-dinitrosalicylic acid colorimetry ( Guan, 1986 ). Soil urease activity was measured by the sodium phenol-sodium hypochlorite colorimetry ( Dick, 2011). Soil catalase activity was determined by potassium permanganate titration (Johnson and Temple, 1964 ). peter chouWebThe content of ammonia nitrogen was determined by phenol-sodium hypochlorite colorimetric method (Broderick and Kang, 1980). The content of organic acids was … peter choueiri

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Phenol-sodium hypochlorite colorimetry

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Web1. apr 1989 · For experiments with phenolic and hypochlorite solutions, and with NaDCC granules, recovery media contained 0-5% and 10% sodium thiosulphate, respectively. … Web[Colorimetric method of determination of ammonia in air with phenol & sodium hypochlorite] [Colorimetric method of determination of ammonia in air with phenol & sodium …

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Web15. okt 2024 · The salicylate method is a modification of the indophenol method, in which sodium salicylate is used as the phenolic compound, sodium hypochlorite is used as the hypochlorite source, and sodium nitroprusside is used as a catalyst. Web1. feb 2012 · Soil urease activity was determined according to the sodium phenate-sodium hypochlorite colorimetry method and expressed as the number of milligrams of NH 4 + -N …

Web1. apr 2024 · Additionally, 3,5-dinitrosalicylic acid (colorimetry) was used to measure the litter sucrose and cellulase contents; phenol‑sodium hypochlorite (colorimetry) was used to measure the urease contents; potassium permanganate titration was used to measure the catalase contents; and the disodium phenyl phosphate colorimetric method was used to … Web11. apr 2024 · The paper used sodium phenol sodium hypochlorite colorimetry (to determine urease activity), disodium diphenyl phosphate colorimetry (to determine soil phosphatase activity), 3–5 dinitrosalicylic acid colorimetry (to determine sucrase activity and cellulase activity), and potassium permanganate titration (to determine catalase …

Web24. feb 2007 · Abstract The use of phenol and alkaline hypochlorite has been investigated for the spectrophotometric estimation of methylamine. The reagents react with … WebAdditionally, 3,5-Dinitrosalicylic acid colorimetry was used to measure litter sucrase and cellulase content; phenol-sodium hypochlorite colorimetry was used to measure urease content;...

WebPhenol and phenolic compounds are common contaminants in industrial wastewaters. Sources include washings from coke ovens, petroleum manufacture, engineering …

WebPhenol-hypochlorite reaction for determination of ammonia Analytical Chemistry RETURN TO ISSUE PREV Article NEXT Phenol-hypochlorite reaction for determination of ammonia … peter chou htcWeb9. nov 2024 · After 5 min of reaction, 2.0 mL of the sodium carbonate 4% (m / v) solution was added and mixed, and the mixture was kept protected from the light, for two hours. Phenolic compounds concentration was determined using a spectrophotometer (Femto 700 Plus, Sao Paulo, Brazil) at 740 nm and by smartphone-based colorimetry (item 2.2.1). starke county indiana assessor gisWeb17. júl 2024 · NH 4+ -N, NO 2− -N, and NO 3− -N were extracted with potassium chloride (1 mol/L) and determined by phenol sodium-sodium hypochlorite colorimetry, phenol disulfonyl acid colorimetry, and Gerry reagent colorimetry, respectively (Belyaeva … starke county indiana arrestsWeb11. apr 2024 · The paper used sodium phenol sodium hypochlorite colorimetry (to determine urease activity), disodium diphenyl phosphate colorimetry (to determine soil phosphatase activity), 3–5 dinitrosalicylic acid colorimetry (to determine sucrase activity and cellulase activity), and potassium permanganate titration (to determine catalase … starke county indiana addressWebA NEW PHENOL-HYPOCHLORITE REACTION FOR AMMONIA. A NEW PHENOL-HYPOCHLORITE REACTION FOR AMMONIA Nature. 1964 Feb 8;201:622-3. doi: … peter chorus aachenWebsodium hydroxide solution and treated with alkaline phenol reagent and sodium hypochlorite reagent. This treatment forms a blue color designated as indophenol. Sodium nitroprusside, which increases the intensity of the color, is ... 6.1.9 Colorimeter equipped with 50 mm tubular flow cell and 630 nm filters. 6.1.10 Recorder equipped with range ... starke county indiana accident reportsWebThis report delineates how, by using variants in absorbent materials and in the preparation of sodium hypochlorite, the authors were able to detect 0.0003 milligrams of ammonia in a … starke county indiana businesses