2011
DOI: 10.1016/j.cej.2011.08.049
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Synthesis of aminopropyl triethoxysilane-functionalized silica and its application in speciation studies of vanadium(IV) and vanadium(V)

Abstract: a b s t r a c tA solid phase extraction sorbent, aminopropyl triethoxysilane-functionalized silica was prepared and used for vanadium speciation prior to inductively coupled plasma mass spectrometric determination. The necessary sorption parameters such as sorption pH, reaction temperature, sorbent amount and sample volume were optimized. The sorption for V(V) and V(IV) under the optimized conditions was 98% (±1) and was lower than 10%, respectively. The sorption process was investigated both from a kinetic pe… Show more

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Cited by 46 publications
(21 citation statements)
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“…4 oxidation states as vanadyl cation, VO 2? , in reducing media and is stable in acidic solution below pH 2 [6]. However, it is known that vanadium exists in different hydrolyzed forms depending upon its concentration and the pH of the system [1].…”
Section: Effect Of the Phmentioning
confidence: 98%
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“…4 oxidation states as vanadyl cation, VO 2? , in reducing media and is stable in acidic solution below pH 2 [6]. However, it is known that vanadium exists in different hydrolyzed forms depending upon its concentration and the pH of the system [1].…”
Section: Effect Of the Phmentioning
confidence: 98%
“…Vanadium is known as an essential trace element for plants and animals. Although vanadium is important for biological system at low concentrations, it is toxic at high concentrations [6]. Vanadium has an electronic configuration of [Ar]3d 3 4s 2 and can exist in eight oxidation states ranging from -3 to ?5, but with the exception of -2.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…The amino functionalized hollow nanospheres were efficient adsorbents for CO 2 . APTES-functionalized silica was prepared for vanadium speciation by Erdem [32]. The amino functionalized titanium dioxide/silica nano hybrid material was prepared with APTES, TEOS and tetraethyl orthotitanate (TEOT), and the dyes adsorption of this material increased with the increases of number of amino groups [33].…”
Section: Contents Lists Available At Sciencedirectmentioning
confidence: 99%
“…At trace level it has a less toxic character as compared to lead, cadmium and mercury, but it also possesses useful biochemical functions, such as anti‐carcinogenic and insulin‐like characteristics . It is an important element for living beings . Vanadium pollution in the environment has been mostly related to industrial activities, particularly burning of coal and vanadium‐rich oils .…”
Section: Introductionmentioning
confidence: 99%