Solid phase extraction and graphite furnace atomic absorption spectrometric determination of ultra trace amounts of bismuth in water samples

Yamini, Yadollah; Chaloosi, Marzieh; Ebrahimzadeh, Homeira

doi:10.1016/s0039-9140(01)00615-4

Cited by 72 publications

(26 citation statements)

References 21 publications

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“…1 Also bismuth-containing pharmaceuticals have been used for various medical purposes, especially for a wide range of gastrointestinal tract disorders ranging from constipation to diarrhea, particularly for peptic gastritis and ulceration. 2,3 The exact mechanism of its action is yet unknown, but its therapeutic activity might result from mucosa-protective properties, and from inhibition of colonic bacteria acting on fermentable food residues.…”

Section: Introductionmentioning

confidence: 99%

Design of an Optical Sensor for Determination of Bismuth

Rastegarzadeh

Fatahinia

2011

J Chinese Chemical Soc

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An optical chemical sensor (optode) for the determination of Bi(III) has been designed by immobilization of methyltrioctylammonium chloride on triacetylcellulose polymer. The exchange of chloride as counter ion with iodide in the membrane changes the colorless film to orange, when it is placed in acidic solution of Bi(III). The sensor can readily be regenerated by 0.1 mol L -1 sodium citrate solution in less than 15 s. Under optimum conditions, the proposed membrane is capable of determining Bi(III) over a dynamic range between 3.36 × 10 -6 and 4.80 × 10 -5 mol L -1 with a limit of detection 1.02 × 10 -6 mol L -1 . The relative standard deviation for seven replicate measurements of 9.60 × 10 -6 and 3.84 × 10 -5 mol L -1 of Bi(III) was 3.79 and 2.14%, respectively. The sensor was successfully applied to the determination of bismuth in tablet and water samples.

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Section: Introductionmentioning

confidence: 99%

Design of an Optical Sensor for Determination of Bismuth

Rastegarzadeh

Fatahinia

2011

J Chinese Chemical Soc

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“…33 As the use of bismuth in medicines is increasing, it has spread in the environment and the exposure of organisms to bismuth has increased. 34 In this report we explore the interaction of the morin plus its complex (Bi-complex) with calf thymus DNA, using spectrophotometric, fluorimetric and cyclic voltammetry methods. The aim of this study is to find a relation between the antitumour properties of the complex and the mode of DNA binding.…”

Section: Introductionmentioning

confidence: 99%

Study on the interaction between morin-bi(III) complex and DNA with the use of methylene blue dye as a fluorophor probe

Ensafi

Hajian

Ebrahimi

2009

J. Braz. Chem. Soc.

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Com base em nossa investigação, ambos os complexos, morin-Bi(III) e Morin, podem vincularse ao DNA, embora a natureza da ligação seja diferente para cada um deles. Na presença e ausência do DNA, o morin-Bi(III) mostrou características espectrais diferentes, o que está de acordo com as observadas para outros intercaladores. Neste trabalho, a interação do complexo morin-Bi(III) com o DNA de timo de vitela foi investigada com o uso do azul de metileno (MB), como uma sonda de corante espectral e aplicação de espectrofotometria UV-Vis, espectroscopia de fluorescência e voltametria cíclica. , enquanto que o morin liga-se por um modelo de não-intercalação.Based on our investigation, although both morin-Bi(III) complex and morin can bind to DNA, the nature of the binding was found to be different for each of them. In the presence and absence of the DNA, the morin-Bi(III) complex shows different spectral characteristics which agree with those observed for other intercalators. In this work, the interaction of morin-Bi(III) complex with calf thymus DNA was investigated with the use of methylene blue (MB) dye as a spectral probe and application of UV-Vis spectrophotometry, fluorescence spectroscopy and cyclic voltammetry. The 2:1 morin-Bi(III) complex ratio was calculated by UV-Vis spectroscopy (mole ratio method). The fluorescence signal of Bi(III)-morin complex is increased with DNA addition whereas the fluorescence signal of Morin is decreased with DNA addition. The fluorescence signal of the DNA-complex is quenched by addition of MB which confirms the displacement of the complex with MB. Cyclic voltammetry studies confirm the intercalation reaction. The results showed that only morin-Bi(III) complex can intercalate into the double helix of the DNA. The apparent binding constant of morin-Bi(III) complex with DNA is found to be 2.8 × 10 4 L mol -1, while morin binds in a non-intercalation mode.

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“…The calculated values of N and HETP values from the chromatogram method (Fig. 14) using Gluenkauf equation [14] were equal to 90 ± 3.02 and 0.11± 0.02mm, respectively. The values of N and HETP were also computed from the breakthrough capacity curve (Fig.…”

Section: Analytical Performance Of the Immobilized Pufs Packed Columnmentioning

confidence: 96%

Fast, Selective Removal and Determination of Total Bismuth (III) and (V) in Water by Procaine Hydrochloride Immobilized Polyurethane Foam Packed Column Prior to Inductively Coupled Plasma - Optical Emission Spectrometry

El-Shahawi¹,

Al-Sibaai²,

Al-Saidi³

et al. 2012

Polyurethane

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Solid phase extraction and graphite furnace atomic absorption spectrometric determination of ultra trace amounts of bismuth in water samples

Cited by 72 publications

References 21 publications

Design of an Optical Sensor for Determination of Bismuth

Design of an Optical Sensor for Determination of Bismuth

Study on the interaction between morin-bi(III) complex and DNA with the use of methylene blue dye as a fluorophor probe

Fast, Selective Removal and Determination of Total Bismuth (III) and (V) in Water by Procaine Hydrochloride Immobilized Polyurethane Foam Packed Column Prior to Inductively Coupled Plasma - Optical Emission Spectrometry

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