Spectrofluorimetric determination of iron(III) with 2-pyridinecarbaldhyde-5-nitro-pyridylhydrazone in the presence of hexadecyltrimethylammonium bromide surfactant

Dual determination of nitrite and iron by a single greener sequential injection spectrophotometric system employing a simple single aqueous extract from Areca catechu Linn. serving as a natural reagent

“…Various methods have been developed to monitor iron such as electrochemical techniques, 29,30 chromatography, 31,32 atomic absorption spectroscopy, 33–36 inductively coupled plasma atomic emission spectroscopy (ICP-AES), 37 and spectrophotometry. 38–44 The spectrophotometric method is widely used to determine iron in water samples due to its versatility, simplicity, and feasibility. Many reagents are available for iron determination such as 1,10-phenanthroline, 28 2-pyridinecarbaldehyde-5-nitro-pyridylhydrazone, 39 1-(3′-methoxypropyl)-2-methyl-3-benzyloxy-4-(1 H )pyridinone – MRB13, 40 and 2-(5-bromo-2-pyridylazo)-5-[ N-n -propyl- N -(3-sulfopropyl)amino]aniline.…”

“…38–44 The spectrophotometric method is widely used to determine iron in water samples due to its versatility, simplicity, and feasibility. Many reagents are available for iron determination such as 1,10-phenanthroline, 28 2-pyridinecarbaldehyde-5-nitro-pyridylhydrazone, 39 1-(3′-methoxypropyl)-2-methyl-3-benzyloxy-4-(1 H )pyridinone – MRB13, 40 and 2-(5-bromo-2-pyridylazo)-5-[ N-n -propyl- N -(3-sulfopropyl)amino]aniline. 41 However, these reagents are hazardous and/or expensive.…”

Simple Time-Saving Method for Iron Determination Based on Fluorescence Quenching of an Azaflavanon-3-ol Compound

“…Some fluorescent compounds have been proposed for the determination of iron in the literature. − However, their application to real samples is limited. − Except for Zhang, others applied their method to tap water, streamwater, and wastewater samples. − Zhang used only multivitamin tablets as a real sample to determine iron content . Spectrofluorometric methods for iron determination in foods are also limited. − Because of a long complexation process and pretreatment before analysis, some of these methods are time-consuming. , Some require the use of many chemicals and extra processes. , …”

Fluorimetric determination of iron using 5-(4-methoxyphenylazo)-8-(4-toluenesulfonamido)quinoline

“…Recently, 2-pyridinecarbaldehyde-5-nitro-pyridylhydrazone has been synthesised and suggested as a chelating reagent for the fluorimetric determination of iron(III), based on the appearance of fluorescence. 12 Unfortunately, cations such as Fe(II), Cu(II), Cd(II), Al(III) and Pd(II) interfered, and a 65% methanol medium was needed for the determination. Moreover, it lacks the high sensitivity usual for a spectrofluorimetric method.…”

“…The proposed method offers the advantages of simplicity, selectivity and high sensitivity for the determination of iron without the need for organic solvent extraction, preconcentration or pre-separation unlike the spectrofluorimetric methods reported previously. [9][10][11][12]…”