Determination of vanadium species in environmental samples

Pyrzyńska, Krystyna; Wierzbicki, T. L.

doi:10.1016/j.talanta.2004.05.007

Cited by 139 publications

(90 citation statements)

References 60 publications

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“…Vanadium compounds cause corrosion problems derived from the combustion chamber of power plants and change in catalysts selectivity are typical problems (Pyrzynska, 2004).…”

Section: Rsults and Discussionmentioning

confidence: 99%

Determination of Vanadium in Crude Oil and Some Petroleum Products Spectrophotometrically

Mohammed¹,

Taher²

2018

JCHPS

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Vanadium is undesired constituent found in crude oil and its products, where, it has many side effects in refineries, affects the catalyst activity and corrosion problems in plants. This paper offers analytical determination method of vanadium from crude oil and some petroleum products by extraction. The extraction was accomplished in 6 h at 80ºC in basic media, followed by sample preparation, finally, spectrophotometric measurements at λmax of 395 nm.The results showed various vanadium content of crude oil (31.25 -223.75) ppm, fuel oil 210 ppm, kerosene 166.25 ppm, gasoline (285 -287.5) ppm, lubricating engine oil (157.5 -251.25) ppm and turbine oil (186.25 -202.5) ppm.

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“…Vanadium compounds cause corrosion problems derived from the combustion chamber of power plants and change in catalysts selectivity are typical problems (Pyrzynska, 2004).…”

Section: Rsults and Discussionmentioning

confidence: 99%

Determination of Vanadium in Crude Oil and Some Petroleum Products Spectrophotometrically

Mohammed¹,

Taher²

2018

JCHPS

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“…The results obtained by the proposed method using 5 ml of the sample solutions, are shown in Table 4. Since it was found that V(IV) is stable only at pH 2 and gradually oxidized at higher pH [39], and since all water samples used in this work were initially acidified by using concentrated HNO 3 which has property of oxidizing acid, it can be assumed that V(IV) which exists in low concentration was oxidized to V(V), and thus the determination result reflected the concentration of total V. The concentration of metal ions was found to be higher than the LODs of measurement, and good reproducibility was obtained. The results from recovery tests, which were carried out by spiking a recorded-amount of analytes, indicated that the existence of matrices in environmental water samples did not interfere with …”

Section: Application To Real Environmental Water Samplesmentioning

confidence: 99%

Synthesis of cross-linked chitosan functionalized with threonine moiety and its application to on-line collection/concentration and determination of Mo, V and Cu

Hakim

Sabarudin

Oshita

et al. 2008

Talanta

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A novel chitosan-based resin functionalized with threonine moiety was synthesized, and applied to the collection/concentration of Mo, V, and Cu in environmental water samples, followed by their determination using inductively coupled plasma-atomic emission spectrometer (ICP-AES). The synthesized resin, crosslinked chitosan-threonine (CCTS-Thr), showed good adsorption behavior toward trace amounts of Mo, V, and Cu in a wide pH range.The adsorbed elements can be easily eluted using 2 mol L -1 of nitric acid, and their recoveries were found to be 90-100%. The CCTS-Thr was packed in a mini-column, which was then installed in a computer-controlled auto-pretreatment system (Auto-Pret System) for on-line trace-elements collection and determination by ICP-AES. Experimental parameters related to the improvement of sensitivity and reproducibility were optimized. The limits of detection (LODs) for target metals were found to be in sub-ppb level. The proposed method with L. Hakim et al. CCTS-Thr resin was successfully applied to the determination of Mo, V, and Cu in environmental water samples. The recovery test showed that common matrices which exist in environmental water samples did not interfere with the determination.

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“…Searching for systems which allow a sensitive, selective, fast and inexpensive determination of vanadium are attracting special interest, due to great industrial, biological, ecological, and pharmacological importance of this element [14][15][16][17]. Vanadium can exist in many oxidation states (from II to V), but most methods have concentrated on its determination in the pentavalent and tetravalent states, as these are the most common forms encountered in inorganic and biological systems [15,16].…”

Section: Fig 1 Structure Of Mono-and Ditetrazolium Salts Deriving Frmentioning

confidence: 99%

The solvent extraction and spectrophotometric determination of vanadium (V) with 4-(2-thiazolylazo)resorcinol and tetrazolium salts

et al. 2007

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Abstract:The formation and extraction of ion-associate complexes between the vanadium(V) -4-(2-thiazolylazo)resorcinol (TAR) anionic chelate and the cations of some mono-and ditetrazolium salts {3- (4,5-dimethyl-2-thiazol-tetrazolium] chloride (Tetrazolium blue chloride) and 3,3'-(3,3'-dimetoxy-4,4'-biphenylene)bis[2-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride] (Nitro blue tetrazolium chloride)} have been studied. The optimum extraction conditions have been found. The composition of the V-TARmonotetrazolium and V-TAR-ditetrazolium complexes extracted into chloroform has been determined to be 1:2:3 and 2:4:3 respectively. The extraction, distribution and association constants, and the recovery factors have been calculated. The relationship between the molecular weight of tetrazolium cations, and the association constants of their complexes has been discussed. The special behavior of the tetrazolium cations, containing -NO 2 groups has been noticed. The effects of foreign ions and reagents on the extraction of vanadium with TAR and the best tetrazolium salt -MTT have been studied. A sensitive, selective, simple and fast method for the determination of vanadium has been developed.

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Determination of vanadium species in environmental samples

Cited by 139 publications

References 60 publications

Determination of Vanadium in Crude Oil and Some Petroleum Products Spectrophotometrically

Determination of Vanadium in Crude Oil and Some Petroleum Products Spectrophotometrically

Synthesis of cross-linked chitosan functionalized with threonine moiety and its application to on-line collection/concentration and determination of Mo, V and Cu

The solvent extraction and spectrophotometric determination of vanadium (V) with 4-(2-thiazolylazo)resorcinol and tetrazolium salts

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