Fluorometric Study of Magnesium-Bissalicylidene-ethylenediamine System

White, Charles E.; Cuttitta, Frank

doi:10.1021/ac60156a064

Cited by 27 publications

(15 citation statements)

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“…This indicates that the molar ratio of magnesium to bissalicylidene-ethylenediamine is 1 to 1. This ratio was further substantiated (10) by a fluorometric modification of the method of continuous variations. Conformance to Lambert-Bouguer-Beer Law.…”

Section: It Has Beenmentioning

confidence: 92%

“…'rakrn from a thesis by Frank Cuttitta in partial fulfillment of the rrquirenieritP for t,he degree of master of science, Lniversity of Maryland, June 1958. A dene-ethylenediamine as a fluorometric reagent for the determination of magnesium has been reported (10). This present papm appraises the system from a colorimetric standpoint.…”

Section: Literature Citedmentioning

confidence: 93%

“…Coupled n-ith suitable separations, the usefulness of the reaction can he estended to permit the determination of microgram amounts in complex materials. The apparatus and reagents are detailed in (10).…”

Section: Literature Citedmentioning

confidence: 99%

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Spectrophotometric Study of Magnesium-Bissalicylidene-ethylenediamine System

Cuttitta¹,

White²

1959

Anal. Chem.

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values found by the spectrophotometric method were 0.012% (in duplicate) magnesium oxide for sample 81 and 0.022 and 0,02370 for sample 93. The fluorometrically determined values are 0.005 and 0.009% magnesium oxide for sample 81 and 0.022 and 0.023% for sample 03.The agreement by the present methods is thus considered satisfactory. COMPARISON OF FLUOROMETRIC AND SPECTROPHOTOMETRIC METHODSThe sensitivity of the spectrophotometric method is 0.0019 y of magnesium per sq. em., indicating that 15.5 x 10-5 pniole (3.8 X y) of magnesium per ml. can be detected using a 5-em. light path. The limit of detection of the fluorometric method is 7 X 10-6 pmole (1.7 X y) of magnesium per ml. The sensitivity of the fluorometric reaction is approxiniately double that of the spectrophotometric reaction. However, because of the extreme sensitivity of the fluorometric method, it magnifies slight variations in technique.Effect of Other Ions. In the course of their work t o determine the stiucture and characteristics of the fluorescent metal chelates of the o,o'-dihydroxyazo compounds, Freeman and White (2) tested the following cations (2 pmoles per 25 ml.) for the formation of fluorescent or colored chelates in

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Section: It Has Beenmentioning

confidence: 92%

Section: Literature Citedmentioning

confidence: 93%

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Spectrophotometric Study of Magnesium-Bissalicylidene-ethylenediamine System

Cuttitta¹,

White²

1959

Anal. Chem.

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“…Only N,N'-bis(salicylidene)ethylenediamine [19,20] and N,N'-bis(salicylidene)-2,3-diaminobenzofuran [20,21] have been employed, for the spectrofluorimetric determination of magnesium.…”

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confidence: 99%

2,6-Bis[(o-hydroxy)phenyliminomethyl]-1-hydroxybenzene as a reagent for the selective spectrofluorimetric determination of aluminium

et al. 1992

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Abstract.A spectrofluorimetric method for the determination of aluminium at ng/ml level has been developed. The method is based on the formation of a fluorescent 1 : 1 complex between AI(III) and 2,6-bis [(o-hydroxy)phenyliminomethyl]-l-hydroxybenzene at an apparent pH of 5.0 in an aqueous-ethanol medium (70% v/v ethanol). The influence of reaction variables is discussed. The range of concentration of the method is 1.0-10.0 ng/ml aluminium, the relative standard deviation 1.5% and the limit of detection 0.1 ng/ml. The advantages of the proposed method include high sensitivity and selectivity. The method has been applied to the determination of Muminium in natural waters.Key words: spectrofluorimetry, aluminium determination, natural waters, 2,6-bis[(o-hydroxy) phenyliminomethyl]-l-hydroxybenzene.Assays for aluminium in body fluids and water have taken on considerable importance over the past few years, ever since the metal was first suspected of being involved in cases of encephalopathy in patients with renal insufficiency treated by dialysis [1][2][3].Aluminium toxicity is also associated with osteomalacy and osteodistrophy [4,5], anaemia [6,7], gastrointestinal symptoms [8] and possible cardio toxicity [9] features.The determination of aluminium in waters is desirable, as the most important source of this element in patients with renal failure is the water used for dilution of dialysis solutions [10,11].Commercial aluminium salts are used as flocculants in water-treatment plants; aluminium sulphate, chloride and chlorosulphate are the most commonly employed. This implies that flocculation with commercial aluminium salts increases the aluminium content in tap water.Aromatic Schiff's bases of salicylidene-o-aminophenol (I) type have been extensively proposed for the spectrofluorimetric determination of metals, through forma-

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“…In addition to the problems usually encountered with lakes the presence of large amounts of calcium interferes and not predictably. A very sensitive fluorometric method has been proposed by White and Cuttitta (16). It requires the use of anhydrous dimethylformamide as a solvent and the complete exclusion of water.…”

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Fluorescence spectra of alkaline earth derivatives of azo compounds

Olsen

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Fluorometric Study of Magnesium-Bissalicylidene-ethylenediamine System

Cited by 27 publications

References 4 publications

Spectrophotometric Study of Magnesium-Bissalicylidene-ethylenediamine System

Spectrophotometric Study of Magnesium-Bissalicylidene-ethylenediamine System

2,6-Bis[(o-hydroxy)phenyliminomethyl]-1-hydroxybenzene as a reagent for the selective spectrofluorimetric determination of aluminium

Fluorescence spectra of alkaline earth derivatives of azo compounds

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