Dapsone and Iminodibenzyl as Novel Reagents for the Spectrophotometric Determination of Trace Amounts of Nitrite in Water Samples

Nagaraja, Padmarajaiah; Kumar, M. S. Hemantha; Rangappa, Kanchugarakoppal S.

doi:10.2116/analsci.17.439

Cited by 9 publications

(6 citation statements)

References 24 publications

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“…Still, the most frequently employed methodology for the determination of nitrite is spectrophotometric method [34][35][36][37][38][39][40][41][42][43][44][45][46] used and insufficient sensitivity or use expensive reagents. The APHA and AOAC official method of analysis involves the reaction of N-(1-naphthyl) ethylenediamine dihydrochloride with sulphanilamide [5,47].…”

Section: Introductionmentioning

confidence: 99%

A simple and sensitive spectrophotometric method for the determination of trace amounts of nitrite in environmental and biological samples using 4-amino-5-hydroxynaphthalene-2,7-disulphonic acid monosodium salt

Nagaraja

Al-Tayar

Shivakumar

et al. 2010

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Section: Introductionmentioning

confidence: 99%

A simple and sensitive spectrophotometric method for the determination of trace amounts of nitrite in environmental and biological samples using 4-amino-5-hydroxynaphthalene-2,7-disulphonic acid monosodium salt

Nagaraja

Al-Tayar

Shivakumar

et al. 2010

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…as well as in the field of analytical chemistry, where they were used as reagents in quantitative and qualitative analysis [9],because of the color characteristic that bestows on these compounds as they were exploited in spectroscopic studies. One of the important compounds (pyrazolin-5-one) that has received attention by many researchers because of its biological activity and effectiveness as a result of the presence of more than one donor atom of electronegative pairs [10], as well as the presence of heterogeneous aromatic rings that are compensated by other groups, which have the ability to form chelating bonds with metals to form coordination complexes with biological activity [11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and biological evaluation of some metals complexes with new Azo-Schiff ligand

Mizher¹,

Wadday

2022

ijhs

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In this research the ligand 5-((3-(1-((5-bromopyridin-2yl)imino)ethyl)-2-hydroxyphenyl)diazenyl)-2-phenyl-2,4-dihydro-3H-pyrazol-3-one (BHAP)was used to prepare new complexes with elements Cu(II) ,Ni(II), Pt(II),Co(II) ,Cr(III). The new ligand was analyzed by partial analysis of the elements (C.H.N). UV- visible and infrared rays(FTIR), spectroscopy H1NMR, C13NMR and mass spectrometry. The complexes were prepared after determining the optimum pH and concentration values by examining the spectra (UV - Vis) of the solutions of these complexes to find out the pH (3-10), concentration (1*10 -4-5.5*10-4) and molar ratios that agree with Beer-Lambert's law. The chemical measurement of the complexes was known with respect to the ligand ratio, which was verified by spectroscopy technique, after choosing the maximum absorption of the solutions of those complexes, where the ligand ratio (1:1) was achieved for all complexes. The properties of the prepared complexes were identified by (FTIR), ultraviolet and visible rays, molar conduction, atomic absorption, magnetic sensitivity and elemental analysis techniques (C.H.N. Through the results obtained from physical, chemical and spectroscopic techniques, the geometrical shape of these complexes was suggested as octahedral. All these complexes were evaluated against two types of pathogenic bacteria (positive and negative).

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“…The most common choice for this purpose is the spectrophotometric method based on the Griess reaction [12], which consists in the formation of a strongly colored azo dye. Thus, an amine (namely, sulfanilamide) is diazotized by means of nitrite under special conditions (in acidic media) to form a transient diazonium salt.…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric determination of nitrite by its catalytic effect on the oxidation of congo red with bromate

Moldovan¹

2012

Bull. Chem. Soc. Eth.

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ABSTRACT. A novel simple, sensitive and rapid kinetic-spectrophotometric method for the determination of trace amounts of nitrite is proposed. The method is based on its catalytic effect on the oxidation of congo red (CR) by potassium bromate in acidic solution. The oxidation reaction is monitored spectrophotometrically by measuring the decrease in the absorbance of CR at a suitable λmax = 570 nm for the first 10-40 s from the start of the reaction. Under the optimum experimental conditions (sulfuric acid, 0.3 M; CR, 0.75×10 -4 M; potassium bromate, 5×10-4 M and 25 o C), nitrite can be determined in the range of 0.015-0.75 µg mL −1 with the detection limit of 0.006 µg mL −1 . The relative standard deviation of five replicate determination of 0.25 µg mL −1 nitrite was 2.5%. The proposed method was applied satisfactorily to the determination of nitrite in spiked drinking water samples.

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Dapsone and Iminodibenzyl as Novel Reagents for the Spectrophotometric Determination of Trace Amounts of Nitrite in Water Samples

Cited by 9 publications

References 24 publications

A simple and sensitive spectrophotometric method for the determination of trace amounts of nitrite in environmental and biological samples using 4-amino-5-hydroxynaphthalene-2,7-disulphonic acid monosodium salt

A simple and sensitive spectrophotometric method for the determination of trace amounts of nitrite in environmental and biological samples using 4-amino-5-hydroxynaphthalene-2,7-disulphonic acid monosodium salt

Synthesis, characterization and biological evaluation of some metals complexes with new Azo-Schiff ligand

Spectrophotometric determination of nitrite by its catalytic effect on the oxidation of congo red with bromate

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