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Journal articles on the topic 'Redox Titrimetric Method'

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1

Lestari, Ida, Peni Pujiastuti, and Yari Mukti Wibowo. "Komparasi Metode Titrimetri Dengan Spektrofotometri UV-Vis pada Analisis Chemical Oxygen Demand (COD) Output IPAL Domestik Berdasarkan Linieritas, Akurasi dan Presisi." JURNAL SAINS TEKNOLOGI & LINGKUNGAN 9, no. 4 (2023): 592–602. http://dx.doi.org/10.29303/jstl.v9i4.416.

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The method of a test must be evaluated and tested to ensure that the method is capable of producing valid data. So that validation needs to be done as a quality control that provides assurance that the measurements and results obtained are reliable. This study aims to determine the value and comparison of the values of linearity, accuracy, and precision of the titrimetric and spectrophotometric methods in COD analysis. Determination of the COD value for the titrimetric method was carried out by redox titration using a solution of Ferro Ammonium Sulphate (FAS). While the spectrophotometric meth
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2

M., S. PRASADA RAO, V. L. KUMARI V., SIVA RAO T, and RAMA MOHAN RAO A. "A New Photochemical Redox Method for the Estimation of Thallium(III) in the Presence of High Chloride Ion Concentrations catalysed by Iron(III)." Journal of Indian Chemical Society Vol. 72, Mar 1995 (1995): 185–88. https://doi.org/10.5281/zenodo.5901978.

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Inorganic Chemistry Laboratories, Andhra University, Visakhapatnam-530 003 <em>Manuscript received 7 July 1993, revised 17 November 1993, accepted 23 November 1993</em> A photochemical titrimetric method is described for the determination of thallium(III) with oxalate in 0.5 <em>M</em> perchloric acid and in the presence of high chloride (6.0 mmol) and 0.001-0.002 mmol of iron(m) as catalyst. Thallium(m) is reduced to thallium(I) photochemically with oxalic acid in perchloric acid medium in the presence of excess of chloride using iron(III) as catalyst. The reduced thallium(I) is determined br
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3

Василий Васильевич, Стецик,, Матвиенко, Оксана Артуровна, and Цыбулько, Валерий Андреевич. "MODELING OF MIXED REDOX AND PRECIPITATION TITRATION IN COMPLEX SYSTEMS." Вестник Тверского государственного университета. Серия: Химия, no. 4(50) (January 18, 2023): 67–79. http://dx.doi.org/10.26456/vtchem2022.4.9.

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Анализ смесей без предварительного их разделения или с минимальным разделением является актуальной задачей аналитической химии. В титриметрическом методе анализа значительными возможностями в этом направлении обладает смешанное титрование, то есть такой способ титрования, при котором в одном опыте протекают одновременно титриметрические реакции разных типов. В данной работе проведено моделирование титрования в системах, в которых протекают одновременно окислительно-восстановительное и осадительное титрование. Для расчета возникающих достаточно сложных систем алгебраических уравнений применена
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4

Eugene Adenya Ashiagbor and Aba Akebi Atta-Eyison. "Determination of ascorbic acid levels in oranges under different storage conditions using Redox Iodometric method." World Journal of Advanced Research and Reviews 22, no. 1 (2024): 1169–79. http://dx.doi.org/10.30574/wjarr.2024.22.1.1165.

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Ascorbic acid is one of the most important vitamins to the human body due to its potentially protective role as an antioxidant. Oranges by far the most important citrus species are an excellent source of ascorbic acid. The ascorbic acid in three varieties of Ghanaian local oranges was estimated after storage under four different storage conditions. The storage conditions were deep freezing, dark cupboard, open shelf and in the sun. The redox titrimetric method using potassium iodide as the titrant and starch as an indicator was employed to evaluate the ascorbic acid levels in the orange sample
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5

Eugene, Adenya Ashiagbor, and Akebi Atta-Eyison Aba. "Determination of ascorbic acid levels in oranges under different storage conditions using Redox Iodometric method." World Journal of Advanced Research and Reviews 22, no. 1 (2024): 1169–79. https://doi.org/10.5281/zenodo.14212772.

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Ascorbic acid is one of the most important vitamins to the human body due to its potentially protective role as an antioxidant. Oranges by far the most important citrus species are an excellent source of ascorbic acid. The ascorbic acid in three varieties of Ghanaian local oranges was estimated after storage under four different storage conditions. The storage conditions were deep freezing, dark cupboard, open shelf and in the sun. The redox titrimetric method using potassium iodide as the titrant and starch as an indicator was employed to evaluate the ascorbic acid levels in the orange sample
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6

Dos Santos, Stephanie Noronha Azevedo, Ariane Mendonça Kluczkovski, Tatiane Pereira De Souza, et al. "Monitoring sugar content in infant foods." Brazilian Journal of Health Review 6, no. 2 (2023): 6829–40. http://dx.doi.org/10.34119/bjhrv6n2-187.

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High sugar consumption increases the chance of developing diabetes, hypertension, obesity and cancer, as well as cavities and bacterial plaque between teeth. Considering the increase in health problems related to sugar intake in the population, the objective of this work was to monitor the presence and amount of sugar in baby food based on fruits and vegetables from different companies sold in Brazil. Titrimetric methods (Lane-Eynon) and total sugar content were used, based on total soluble solids (TSS) in degrees Brix. In the titration method, it was possible to quantify reducing and non-redu
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7

Đurić, Vladan, and Nebojša Deletić. "Spectrophotometric determination of ascorbic acid by horseradish peroxidase." Bulletin of Natural Sciences Research 10, no. 2 (2020): 17–22. http://dx.doi.org/10.5937/bnsr10-27576.

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L-ascorbic acid is one of the essential nutrients and most common food supplements, fortificants, and preservatives. It is commercially available as solutions, drops, tablets, capsules, crystal powder, beverage mixtures, multivitamin formulations, and multi antioxidant formulations. The usual daily dose is from 25 mg to 1.5 g. Ascorbic acid is a distinctly reducing agent with low redox potential (0.18 and 0.08 V at pH 4.5 and 6.4, respectively). Based on ascorbate property, numerous methods for its quantitative determination are developed, from titrimetric, electrochemical, and chromatographic
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8

Grudinsky, P. I., A. A. Yurtaeva, and V. G. Dyubanov. "The experience of iron determination in technogenic materials with a high copper content by the redox titration method: case study of the waelz slag." Industrial laboratory. Diagnostics of materials 90, no. 9 (2024): 24–31. http://dx.doi.org/10.26896/1028-6861-2024-90-9-24-31.

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Redox titration is one of the most common classical methods widely used in practice for the determination of total iron. A well-known procedure ISO 2597-1 (GOST 32517) includes the decomposition of a sample with dissolution, the reduction of Fe3+ to Fe2+ using a SnCl2 solution and its titration with a K2Cr2O7 solution in the presence of sodium or barium diphenylaminosulfonate as an indicator. We propose to use potassium tetrahydroborate KBH4 as a reducing agent for Fe3+ to Fe2+ instead of SnCl2 to modify a titrimetric method of total iron determination. The features of the well-known and consi
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9

MOROZ, Iryna, Vasylyna SHEMET, and Olha HULAI. "VITAMIN C: STRUCTURE, BIOCHEMICAL SIGNIFICANCE, METHODS OF DETERMINATION." Proceedings of the Shevchenko Scientific Society. Series Сhemical Sciences 2024, no. 75 (2024): 78–89. http://dx.doi.org/10.37827/ntsh.chem.2024.75.078.

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The role of vitamin C for the functioning of the human body is outlined. The antioxidant properties of vitamin C are thought to be a key factor in neutralizing free radicals and peroxide compounds, protecting cells from oxidative stress. It also replenishes other antioxidants, such as vitamins E and glutathione. It is a cofactor for enzymes involved in collagen synthesis. It is necessary for the normal functioning of the skin, bones, cartilage, tooth enamel and blood vessels. Due to the loss of the ability to independently produce ascorbic acid, people are completely dependent on the intake of
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10

Jabeen, Mussarat, Irum Razzaq, Noreen Aslam, and nsa Madeeha Zafar. "Physico-Chemical Analysis of Some Soft Drinks Available in Pakistan." Pakistan Journal of Analytical & Environmental Chemistry 23, no. 1 (2022): 129–40. http://dx.doi.org/10.21743/pjaec/2022.01.13.

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Soft drinks are widely consumed worldwide; therefore, it is necessary to study their qualitative and quantitative analysis. For this purpose, we studied 18 brands of soft drinks purchased from the local market of Bahawalpur, Pakistan. Carbon dioxide, glucose, sucrose, ascorbic acid, phosphates, caffeine, and alcohol were analyzed qualitatively, while pH, conductivity, density, potassium, sodium, and total soluble solids were estimated quantitatively. This physico-chemical analysis was determined by the Association of Official Analytical Chemists (AOAC) methods. The obtained results demonstrate
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11

Akbar, Md Ali, Omar Sharif, Ponnambalam Ravi Selvaganapathy, and Peter Kruse. "Single-walled Carbon Nanotube Chemiresistive Sensors for the Identification and Quantification of Disinfectants." ECS Meeting Abstracts MA2021-02, no. 55 (2021): 1613. http://dx.doi.org/10.1149/ma2021-02551613mtgabs.

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Disinfectants are essential to keep water safe as they kill pathogens by oxidizing the cell membrane. Free chlorine, potassium permanganate, monochloramine, hydrogen peroxide, chlorine dioxide, ozone, and hypobromous acid are the most commonly used disinfectants for the disinfection of water.1 Monitoring the concentration of the disinfectant is crucial as the effectiveness mainly depends on the amount of disinfectants present in water.2 Insufficient levels of disinfectant in drinking water could impose health risks as pathogens could regrow in the distribution system. Standard methods for meas
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12

SAKAMOTO, Takeshi, Hideomi HIGUCHI, and Toshio KAWAGUCHI. "Stepwise determination of metallic copper, cuprous oxide and cupric oxide using redox-titrimetric methods." Bunseki kagaku 38, no. 6 (1989): 263–66. http://dx.doi.org/10.2116/bunsekikagaku.38.6_263.

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13

Fogaça, Lara Alexandre, Laura Bereczki, Vladimir M. Petruševski, et al. "A Quasi-Intramolecular Solid-Phase Redox Reaction of Ammonia Ligands and Perchlorate Anion in Diamminesilver(I) Perchlorate." Inorganics 9, no. 5 (2021): 38. http://dx.doi.org/10.3390/inorganics9050038.

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The reaction of ammoniacal AgNO3 solution (or aq. solution of [Ag(NH3)2]NO3) with aq. NaClO4 resulted in [Ag(NH3)2]ClO4 (compound 1). Detailed spectroscopic (correlation analysis, IR, Raman, and UV) analyses were performed on [Ag(NH3)2]ClO4. The temperature and enthalpy of phase change for compound 1 were determined to be 225.7 K and 103.04 kJ/mol, respectively. We found the thermal decomposition of [Ag(NH3)2]ClO4 involves a solid-phase quasi-intramolecular redox reaction between the perchlorate anion and ammonia ligand, resulting in lower valence chlorine oxyacid (chlorite, chlorate) componen
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14

Мухаметова, С. В., та Е. А. Скочилова. "Параметры плодов жимолости и содержание в них аскорбиновой кислоты и дубильных веществ". Vestnik of Volga State University of Technology Series Forest. Ecology. Nature Management, № 4(64) (21 лютого 2025): 36–47. https://doi.org/10.25686/2306-2827.2024.4.36.

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Введение. Сорта жимолости синей (Lonicera caerulea L.) являются популярной ягодной культурой, плоды обладают десертным кисло-сладким вкусом и имеют пищевое, диетическое и лечебное значение. Цель исследования – определение показателей плодов пяти сортов и четырёх сортообразцов жимолости и содержания в них аскорбиновой кислоты и дубильных веществ в условиях Республики Марий Эл. Объекты исследования – пять сортов и четыре сортообразца жимолости синей, выращиваемые в Ботаническом саду-институте ПГТУ (г. Йошкар-Ола, Республика Марий Эл). Методы исследования. Изучение массы и размеров плодов проводи
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15

Gosavi, Seema, Pooja Jadhav, Aditi Kulkarni, Supriya Jagtap, and Sanket Joshi. "Standardization of Babbularishta – A Marketed Ayurvedic Formulation as per WHO Guidelines." INTERNATIONAL JOURNAL OF DRUG DELIVERY TECHNOLOGY 13, no. 04 (2023): 1183–85. http://dx.doi.org/10.25258/ijddt.13.4.10.

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Ayurveda is the world’s oldest continuous medicinal tradition. Ayurveda’s discovery of the long-lasting single-dose forms of Asava and Arishta is a boon to modern medicine. Diarrhea, colitis, chronic cough, asthma, tuberculosis, and improved digestive function are only a few of the conditions for which the ayurvedic formulation Babbularishta is utilized. Gallic acid is one of the active ingredients in babbularishta, a commercially available ayurvedic medicine. The purpose of this study was to develop a standard for the quality of commercially available Babbularishta by measuring its alcohol co
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16

Basavaiah, Kanakapura, and Okram Zenita Devi. "Application of Oxidizing Properties of Permanganate to the Determination of Famotidine in Pharmaceutical Formulations." Journal of the Mexican Chemical Society 54, no. 4 (2019). http://dx.doi.org/10.29356/jmcs.v54i4.904.

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One titrimetric and two spectrophotometric methods are described for the determination of famotidine (FMT) in either pure form or in its pharmaceutical formulations. The methods are based on redox reaction between FMT and KMnO4 in acid and alkaline media. In titrimetry, an acidified solution of FMT is titrated directly with permanganate. Direct spectrophotometry (method A) involves treating the alkaline solution of the drug with permanganate and measuring the bluish green product at 610 nm. In indirect spectrophotometry (method B), the drug solution is treated with a fixed concentration of per
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17

Sharma, Hemraj, Hari prasad Sapkota, Ashish Khanal, Omraj Dhakal, and Rupa Gurung. "A COMPARATIVE ANALYSIS OF VITAMIN-C CONCENTRATION IN COMMERCIAL FRUIT JUICES AND FRESH FRUITS OF NEPAL WITH EFFECT OF TEMPERATURE." International Journal of Pharmacy and Pharmaceutical Sciences, July 4, 2019, 46–51. http://dx.doi.org/10.22159/ijpps.2019v11i8.33408.

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Objective: It was aimed to determine the best storage temperature for fruits to achieve the highest quality of vitamin-C and to compare vitamin C concentration between commercial fruits juices and fresh fruit juices in by using Spectrophotometry and Titrimetric method&#x0D; Methods: Titration involved the redox reaction between iodine and vitamin C. As the iodine was added during the titration, the ascorbic acid was oxidized to dehydroascorbic acid, while the iodine was reduced to iodide ions. The Spectrophotometric method involved the coupling reaction of 2,4 dinitrophenylhydrazine (DNPH) dye
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18

Dominique, Chodaton Zinsou Marthe, Houngbeme Gouton Alban, Ganfon Habib, Ableto Mathias, Gbenou Joachim Djimon, and Gbaguidi Fernand. "Development and Validation of HPTLC-Densitometric Method Compared to Titrimetric Method for Determination of L-ascorbic Acid in Citrus Fruits." Asian Journal of Chemical Sciences, October 21, 2021, 40–48. http://dx.doi.org/10.9734/ajocs/2021/v10i319096.

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Aims: The aim of this study is to develop and validate an efficient method for the specific determination of L-ascorbic acid in citrus fruits and to compare it with a usual method, method using 2,6-dichlorophenolindophenol&#x0D; Methodology: The research for a specific method for determination of L-ascorbic acid has led to development and validation of High Performance Thin Layer Chromatography – Densitometric (HPTLC-D) method. The validation criteria evaluated are response function, determination reading wavelength, limit of detection, precision of the technique, limit of quantification and r
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19

Jayanti S. Rajora, Tak Kulshresth, Solanki Pratipalsinh, and Vagh Rahul. "A Comparative Analysis of Vitamin C Concentration in Fruits Consumed Commonly in Middle Region of Gujarat." International Journal of Scientific Research in Science, Engineering and Technology, March 20, 2023, 151–56. http://dx.doi.org/10.32628/ijsrst231017.

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In the several areas of Analytical chemistry such as biochemistry, pharmaceutical and food applications, the quantitative analysis of vitamin C has become an important subject. Vitamin C plays an important role in maintaining human health. During COVID -19 pandemic and current situation of various influenza viral infections Vitamin C possesses positive impacts on curing infection and it may play a protective role through improving the immune system. There are numerous methods for the determination of vitamin C in a variety of natural samples, biological fluids and pharmaceutical formulations.
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20

"Quantitative Estimation of Dimenhydrinate in Pharmaceuticals Using Redox Reaction with Oxone." Biointerface Research in Applied Chemistry 15, no. 3 (2025): 45. https://doi.org/10.33263/briac153.045.

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The kinetics and mechanism of dimenhydrinate (DMH) oxidation by potassium hydrogen peroxomonosulfate (KHSO₅) in aqueous medium were investigated iodometrically at 20°C. The reaction was found to have a stoichiometry of 1:1. The reaction is first order in KHSO5 and diphenhydramine (DPH) concentrations. An increase in the pH from 7.7 to 10.4 causes an increase in the reaction rate. It is shown that the kinetics of the reaction are subject to the mechanism of acid-base catalysis—the proposed reaction kinetic equation. The oxidation product of DPH is DPH N-oxide (pDPH). Two analytical methods were
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21

Meena, Anita, and Sanjay Singh. "Osmium(VIII)-catalyzed Oxidation of Cinnamyl Alcohol by N-Chloro-P-toluene Sulfonamide (chloramine-T) in Alkaline Medium: A Kinetic and Mechanistic Pathway." Current Physical Chemistry 15 (April 28, 2025). https://doi.org/10.2174/0118779468360439250417054444.

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Background: The oxidation of cinnamyl alcohol can produce several valuable chemicals, including cinnamaldehyde, cinnamic acid, and other derivatives. Thus, the oxidation of cinnamyl alcohol is a significant chemical transformation in industrial and academic contexts. Moreover, change of medium and the catalyst plays a crucial role in the specification of intermediate species and the preposition of mechanism. Objectives: The objective of this study was to identify the role of the catalyst to find whether it acts via the catalyst redox cycle or not, which is an important question to be settled b
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22

Đurić, Vladan R., and Nebojša R. Deletić. "SPECTROPHOTOMETRIC DETERMINATION OF ASCORBIC ACID BY HORSERADISH PEROXIDASE." University Thought - Publication in Natural Sciences 10, no. 2 (2020). http://dx.doi.org/10.5937/univtho10-27576.

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L-ascorbic acid is one of the essential nutrients and most common food supplements, fortificants, and preservatives. It is commercially available as solutions, drops, tablets, capsules, crystal powder, beverage mixtures, multivitamin formulations, and multi antioxidant formulations. The usual daily dose is from 25 mg to 1.5 g. Ascorbic acid is a distinctly reducing agent with low redox potential (0.18 and 0.08 V at pH 4.5 and 6.4, respectively). Based on ascorbate property, numerous methods for its quantitative determination are developed, from titrimetric, electrochemical, and chromatographic
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23

Murray, Alenzo, Priscilla Baker, and Emmanuel Iwuoha. "Determination of Binding Constants for the Complexes Between Heavy Metal Ions and Cucurbit[n]uril." ChemistrySelect 9, no. 18 (2024). http://dx.doi.org/10.1002/slct.202304161.

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AbstractOne of the major concerns worldwide is the rapid increase in water pollution with hazardous heavy metals. The Cucurbit[n]uril (CB[n]) structure provides an inner hydrophobic cavity accessible through two electrostatically negative portals with polar carbonyl groups, allowing for charged ion–dipole interaction between cationic species with excellent binding affinities. In this work we selected CB[5], and CB[7] for the titrimetric and electrochemical evaluation of the heavy metal complexes formed with Copper(II), Cadmium(II) and Lead(II). The host–guest interaction was found by either at
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24

Y. Gazuwa, Samuel, Jonathan D. Dabak, Kiri H. Jaryum, and Ige Oluwa. "Relationship between Dose and Duration of Administration of Potassium Bromate on Selected Electrolytes and Hepatorenal Parameters in Male Albino Wistar Rats." European Journal of Nutrition & Food Safety, January 15, 2020, 214–20. http://dx.doi.org/10.9734/ejnfs/2019/v11i430163.

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Aim: To monitor the effects of dosage and duration of administering KBrO3 on some electrolytes and hepatorenal parameters in male albino Wistar rats.&#x0D; Study Design: 24 rats, mean weight of 181.3 g were grouped into 4 with 6 rats of each. Experiment spanned over 12 days. In the control group, animals were fed standard diet. Animals in the test groups were fed diet containing 67, 100 and 167 mg/kg dose of KBrO3 according to body weight. 2 rats from each group were sacrificed on the 4th, 8th and 12th days.&#x0D; Place and Duration of Study: University of Jos; 1 month including writing the re
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