Determination of Leachable Vanadium (V) in sediment

Mampuru, Lekgala A.; Panichev, Nikolay; Ngobeni, Prince; Mandiwana, Khakhathi L.; Kalumba, Makonga M.

doi:10.17159/0379-4350/2015/v68a9

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…Vanadium occurs in three oxidation states in the environment (+III, +IV, +V), but V(V) is of greater toxicity and in higher concentrations negatively affects plants, animals and humans. Therefore, determination of V(V) in environmental samples is necessary from the point of view of environmental protection (Mampuru et al 2015;Xiao et al 2015). Considering the fact that the proposed voltammetric procedure is intended for the determination of V(V) in environmental samples, the influence of surface active substances and humic substances on the vanadium signal was examined.…”

Section: Stripping Voltammetry and Its Use For The Determination Of V(v)mentioning

confidence: 99%

Electrochemical sensors as simple and cheap devices for rapid determination of various species in environmental samples

et al. 2019

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The electrochemical methods are very good tool for determination of trace concentrations of various species in water samples. The analysis carried out using these methods are usually simple, fast and also the cost of the required equipment is much lower comparing to other instrumental methods. Furthermore, the electroanalytical methods are easy to automate and computerize. Among five major groups of these methods (potentiometry, voltammetry, coulometry, conductometry and dielectrometry), potentiometry and voltammetry attract the greatest attention of researchers. In this paper, experimental results of research related to development of procedures (voltammetric and potentiometric) for the determination of elements in environmental water samples were presented. Due to their common occurrence in environment and possible toxic effects on living organisms, vanadium and nitrate ions were selected for investigation. Optimization of voltammetric procedure for V(V) determination were carried out in matrix containing different surfactants and humic acids, using lead film electrode as a working electrode. Results showed that only nonionic surfactant Brij-35 did not interfere with the voltammetric signal. Other surfactants as well as humic acids reduced the signal, and possibility of their elimination with suitable resins were also investigated. Potentiometric measurements were consisted of preparation and determination of analytical properties of nitrate ion-selective electrodes with solid contact. The results showed that among three different membrane composition, the best response was achieved by membrane containing: Ni(Phen)2, THTDPCl, PVC and NPOE in the ratio of 1:2:33:64 wt. %, respectively. With the detection limit of 2.8 × 10-6 mol L-1, the working concentration range from 5 × 10-5 to 1 × 10-1 mol L-1 and a slope of -55.1 mV per decade, this electrode showed good selectivity to sulfate, acetate, carbonate, dihydrogen phosphate, fluoride and chloride ions, and also good potential reversibility.

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Section: Stripping Voltammetry and Its Use For The Determination Of V(v)mentioning

confidence: 99%

Electrochemical sensors as simple and cheap devices for rapid determination of various species in environmental samples

et al. 2019

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Atomic spectrometry update – a review of advances in environmental analysis

Butler

Cairns

Cook

et al. 2017

J. Anal. At. Spectrom.

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This is the 29th annual review of the application of atomic spectrometry to the chemical analysis of environmental samples. This Update refers to papers published approximately between September 2012 and July 2013 and continues the series ofAtomic Spectrometry Updates (ASUs) Developments in geochemical analysis included the production and (re)certification of new geological RMs for bulk, isotopic and microspatial analysis. Optimisation of LA-ICP-MS techniques for the interrogation of geochemical samples continues to be reported and a number of useful instrumental review articles (AMS, ICP-MS and SIMS) have been published.Feedback on this review is most welcome and the review coordinator can be contacted using the email address provided. Sampling techniquesThe development of personal workplace air samplers, used to monitor workers' exposure to airborne particles, continues to be a fertile area of research. cartridge assembly which could then be loaded directly into an XRF system for analysis. Initial wind tunnel tests using test aerosols of known particle size indicated that this sampler could collect representative particle size distributions.Generation of test particle atmospheres in a laboratory environment is difficult and it is most informative to see publications describing the development and validation of aerosol test chambers. A system 21 for source characterisation and controlled human exposure to NPs generated during gas-metal arc welding had an airtight 22 m 3 climate-controlled stainless steel chamber at its core. A variety of online measurements, e.g. using TEOM or SMPS, and offline measurements, e.g. using electron microscopy and PIXE techniques, could be made via sampling ports/samplers. Test particles were generated in a separate chamber and subsequently piped into the main chamber. Stable concentrations of atmospheric particles could be maintained for up to 6 h and concentrations could be varied from <5 µg m by EDXRF spectrometry (Cr, Cu, Fe, Ni, Pb and Zn), there were no significant differences in values between the two measurement approaches (paired t-test, p > 0.2, 95 % CI). In summary, the authors concluded that this method was suitable for the high throughput analysis of lightly loaded air filter samples. 11The bioaccessible metal fraction in urban aerosol particles may be a more informative metric than the total metal composition in assessng the potential health effects of exposure to inhaled particles. . Using this optimised method, the airborne levels of Ag in Buenos Aires was determined to be 2-4.5 ng m , respectively. Emission spectroscopyInvestigation into the use of LIBS for the analysis of aerosol samples is a focus of a number of research groups. Elemental emission intensities were normalised to carbon (measured at 247.856 nm) which could be used as an internal standard because the carbon emission from the underlying nylon filter was much larger and relatively more stable than the signal from the deposited carbonaceous particles. This approach was useful for minimising shot-to-...

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Application of Electrochemical Sensor Based on Lead Film Electrode in Trace Vanadium (V) Determination by Adsorptive Stripping Voltammetry

Grabarczyk

Adamczyk

2019

IEEE Sensors J.

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Determination of Leachable Vanadium (V) in sediment

Cited by 4 publications

References 13 publications

Electrochemical sensors as simple and cheap devices for rapid determination of various species in environmental samples

Electrochemical sensors as simple and cheap devices for rapid determination of various species in environmental samples

Atomic spectrometry update – a review of advances in environmental analysis

Application of Electrochemical Sensor Based on Lead Film Electrode in Trace Vanadium (V) Determination by Adsorptive Stripping Voltammetry

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