Gotowe bibliografie tematyczne / Sandell's sensitivity

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Gotowa bibliografia na temat „Sandell's sensitivity”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Sandell's sensitivity"

Bode, H. "On Sandell's sensitivity." Fresenius' Journal of Analytical Chemistry 339, no. 12 (1991): 898. http://dx.doi.org/10.1007/bf00321675.

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Jamil, Dalia, and Nisreen Kais Abood. "New spectrophotometric determination sulfamethaxazole drug via various analytical techniques in pharmaceutical formulation." Journal of Kufa for Chemical Sciences 3, no. 1 (2023): 168–81. http://dx.doi.org/10.36329/jkcm/2023/v3.i1.11844.

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The first method on the oxidative coupling Amoxixilin reaction with 2,4- dinitrophenyl hydrazine and Sodium Iodate diluted to produce a soluble red-Orange dye product was devised to estimate the Amoxicillin in bulk and pharmaceutical preparation. The concentration range is between 1 and 50 g/mL. Beer's law is met by the product in terms. With a molar absorptivity of 6.2×103L.mol-1.cm-1 and a correlation coefficient of 0.9995, Sandell's sensitivity is 0.059g.cm-2 at 475 nm. A second technique for determining a trace amount in an aqueous solution product is called cloud point extraction (CPE), a

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Journal, Baghdad Science. "Spectrophotometric Determination of Bismuth(III) with 4-(2-pyridylazo) Resorcinol-Application to Waters and Veterinary Preparation." Baghdad Science Journal 10, no. 3 (2013): 898–906. http://dx.doi.org/10.21123/bsj.10.3.898-906.

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This paper describes the development of a simple spectrophotometric determination of bismuth III with 4-(2-pyridylazo) resorcinol (PAR) in aqueous solution in the presence of cetypyridinium chloride surfactant at pH 5 which exhibits maximum absorption at 532 nm. Beer's law is obeyed over the range 5-200 µg/25 mL. i.e. 0.2-8 ppm with a molar absorptivity of 3×104 l.mol-1.cm-1 and Sandell's sensitivity index of 0.0069 µg.cm-2. The method has been applied successfully in the determination of Bi (III) in waters and veterinary preparation.

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Saha, Utpal. "Colorimetric Determination of Tetracycline Hydrochloride in Pharmaceutical Preparations." Journal of AOAC INTERNATIONAL 70, no. 4 (1987): 686–88. http://dx.doi.org/10.1093/jaoac/70.4.686.

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Abstract A simple, sensitive, and rapid colorimetric method is presented for the estimation of tetracycline hydrochloride as the pure drug and in formulations. The proposed method is based on the reaction of tetracycline HC1 with cupric chloride in an alkaline medium to give a yellowish green solution whose absorbance is measured at 400 nm against a reagent blank. The color obeys Beer's law in the concentration range of 0-20 μg/mL. Molar absorptivity and Sandell's sensitivity of the yellowish-green copper complexes of tetracycline HC1 are 1.99 x 104 Lmol-1 cm-1 and 0.0241 ppm, respectively.

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Prakash, K., P. Narayana Raju, K. Shanta Kumari, and M. Lakshmi Narasu. "Spectrophotometric Estimation of Amoxicillin Trihydrate in Bulk and Pharmaceutical Dosage Form." E-Journal of Chemistry 5, s2 (2008): 1114–16. http://dx.doi.org/10.1155/2008/350646.

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New simple, sensitive, rapid, reproducible and economical spectrophotometric method have been developed for the determination of amoxicillin trihydrate in pharmaceutical bulk and tablet dosage form using citro phosphate buffer pH 7.2. The system obeys Lambert-Beer's law at 231 nm in the concentration range 2.5-50 μg/m. Molar absorptivity, correlation coefficient and Sandell's sensitivity values were found to be 1.0020 x 104mol-1cm,-10.9996 and 0.03906 μg cm-2respectively. The proposed methods have been successfully applied to the analysis of the bulk drug and its tablet dosage form. The method

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Kalaichelvi, R., B. Thangabalan, D. Srinivasa Rao, and E. Jayachandran. "UV Spectrophotometric Determination of Aripiprazole in Bulk and Pharmaceutical Formulation." E-Journal of Chemistry 6, s1 (2009): S87—S90. http://dx.doi.org/10.1155/2009/542919.

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A simple, sensitive and reproducible spectrophotometric method was developed for the determination of aripiprazole in pure form and in pharmaceutical formulation. It has an absorption maximum at 219 nm and obeys beer's law in the concentration range 2- 10 µg mL-1. Results of analysis were validated statistically and by recovery studies. The apparent molar absorptivity and sandell's sensitivity were 5.2 x 105L mol-1cm-1and 8.4 x 10-3µg cm-2, respectively. The slope and intercept of the equation of the regression line are 0.0035 and 0.1155 respectively. Correlation coefficient was found to be 0.

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Nasser, Alla Hani, and Hayder Abdul-Khaleq. "Determination of Ephedrine Hydrochloride in its Pharmaceutical Preparations by using molecular absorption (UV-Visible) technique." Journal of Wasit for Science and Medicine 4, no. 1 (2022): 1–13. http://dx.doi.org/10.31185/jwsm.121.

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The presented paper aims at using an innovative analytical method to determine the drug ephedrine hydrochloride (EPH), (Usually used for treating different diseases like asthma) in some pharmaceutical preparations using molecular absorption techniques (UV-Visible). Chelate complex is prepared through the reaction between EPH and Co (II). Determination of ephedrine is done as a EPH – Co (II) after extraction by chloroform at λ max 389 nm, and the analytical results are obtained as follows, metal to legend (2:1). Linear dynamic range (1-80g/ml) for EPH, (RSD%=0,303), D.L= (0, 94 g/ml), Sandell

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Swarna, C., K. Purushotham Naidu, G. Nagendrudu, N. V. S. Naidu, and K. Saraswathi. "Spectrophotometric Method for the Determination of Carboxin in its Formulations and Environmental Samples." E-Journal of Chemistry 8, no. 4 (2011): 1680–85. http://dx.doi.org/10.1155/2011/560131.

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Simple, precise, rapid, sensitive and accurate spectrophotometric methods have been developed for the estimation of carboxin in pure form and in its formulations. The first method is based on oxidative coupling of carboxin with 1,10-phenonthrolin in presence of ferric chloride to form orange colored product with λmaxof 510 nm. The product obeyed Beer's law in the concentration range 1-10 mL (10 to 100 µg/mL) with molar absorptivity of 1.1425×103Sandell's sensitivity 0.2061. The second method is based on the reaction of carboxin with 2,2'-bipyridine to form orange red colored product exhibiting

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Shar, G. A., and G. A. Soomro. "DETERMINATION OF COBALT(II) WITH 1-NITROSO-2-NAPHTHOL IN MICELLAR MEDIUM BY FIRST DERIVATIVE SPECTROPHOTOMETRY." Nucleus 44, no. 1-2 (2020): 33–37. https://doi.org/10.71330/nucleus.44.01-2.1029.

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A first derivative spectrophotometeric determination of cobalt(II) is carried out with 1-nitroso-2-naphthol as complexing reagent in aqueous phase using non-ionic surfactant Tween 40. The cobalt is determined in the range 1.7-120 ng mL-1 with detection limit (2Ïƒ) ï€ of 1.7 ng mL-1. The molar absorptivity and Sandell's sensitivity are 1.86 ï‚´ 104 mol-1cm-1 and 3.6 ng cm-2 at 444.5 nm. The optimum pH of the complexation is 5. The critical micelle concentration (cmc) of Tween 40 is 5 %. Absorption studies in the first derivative mode is carried out to determine the absorption maximum of the com

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Krishna Purohit, Miss, and K. K. Desai. "2-Hydroxy-4-Methoxybenzophenone Oxime as an Analytical Reagent for Copper(II)." E-Journal of Chemistry 2, no. 2 (2005): 161–64. http://dx.doi.org/10.1155/2005/825847.

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2-Hydroxy-4-methoxybenzophenoneoxime (HMBO) was developed as a new analytical reagent for the gravimetric determination of Cu(II). In pH 2.5-9.0 the reagent gives brown coloured precipitate with Cu(II). Spectrophotometric methods revealed that the stoichiometry of the complex is 1:2 (metal: ligand). Beer's law is obeyed up to 31.75 ppm of Cu(II). Molar absorptivity and Sandell's sensitivity at 400 nm were found to be 7.0×102L mol-1cm-1and 0.090 μg/cm2respectively. The stability constant of Cu(II)-HMBO complex is found to be 6.13×109. Gibb’s free energy change for complex formation reaction was

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Części książek na temat "Sandell's sensitivity"

Bhatt, Chhaya, and Manish Rai. "Colorimetric Determination of Pyraclostrobin Fungicide Using P-amino-sulphonic Acid Coupling Reagent in Agricultural Soil/Environmental Samples by Spectrophotometric Analysis." In Advances in Colorimetry [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.111833.

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A simple and sensitive method for the determination of pyraclostrobin, a widely used fungicide, is described here which is based on diazotization and coupling with 4- aminosulphonic acid in alkaline medium. The reaction mechanism is based on the pre-equilibrium formation of amine and diazonium salt followed by a rate-limiting attack of the diazonium ion at an N-atom (N-coupling) to appear the corresponding red colored azo complex. The λmax, molar absorptivity and Sandell’s sensitivity related to the UV-Visible absorption spectrometry were found λmax = 600 nm, 2.7 × 104 L mol−1 cm−1 and 1.01 ×

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Streszczenia konferencji na temat "Sandell's sensitivity"

Atiyah, Ali, Kameran Hussein, and Abdul Majeed Ahmed. "Spectrophotometric Determination of Escitalopram Oxalate in Pure Form and its Pharmaceutical Preparation via Oxidative Coupling Reaction." In 5th International Conference on Biomedical and Health Sciences. Cihan University-Erbil, 2024. http://dx.doi.org/10.24086/biohs2024/paper.1353.

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background: One of the techniques for spectroscopic determination are the oxidative coupling reaction, have been utilized in the estimation of compounds in many fields, such as agriculture, clinical, and pharmacological analysis. Aims: The aim of this studying to locate a sensitive and cheap technique for the estimation of escitalopram-oxalate (ESC) in pharmacological compositions and in pure form. Methods and Material: The process relies on the coupling between the escitalopram oxalate with 4-aminoantipyrine (4-AAP) in a basic medium in the attend of N-Bromosuccinimide (NBS) to produce an int

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