The determination of tungsten, molybdenum, and phosphorus oxyanions by high performance liquid chromatography inductively coupled plasma mass spectrometery

Bednar, Anthony J.; Mirecki, June E.; Inouye, Laura S.; Winfield, Linda E.; Larson, Steve L.; Ringelberg, David B.

doi:10.1016/j.talanta.2007.02.016

Cited by 45 publications

(31 citation statements)

References 11 publications

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“…An adaptation of the high‐performance liquid chromatography (HPLC) inductively coupled plasma mass spectrometry (ICP‐MS) method of Bednar et al () for the oxyanions of W, Mo, and P was developed to determine the concentrations of total dissolved W and of the tungstate anion

W {normalO}_{4}^{2 -}

. This adaption to the method is new in that it provides quantitative determinations of the concentrations of total dissolved W and the

W {normalO}_{4}^{2 -}

anion in the same run, and each determination is independent of the other.…”

Section: Experimental Methodsmentioning

confidence: 99%

Transformation/dissolution characterization of tungsten and tungsten compounds for aquatic hazard classification

Huntsman

Skeaff

Pawlak

et al. 2018

Integr Envir Assess & Manag

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The transformation/dissolution protocol (T/DP) for metals and sparingly soluble metal compounds was applied to determine the transformation/dissolution (T/D) characteristics of yellow tungsten trioxide, WO ; blue tungsten oxide, WOx, x taken as 2.9; tungsten disulphide, WS ; tungsten metal, W; 3 samples of tungsten carbide, WC; sodium tungstate, Na WO · 2H O; ammonium paratungstate (APT), (NH ) (H W O ) · 4H O; and ammonium metatungstate (AMT) (NH ) (H W O ) · 3H O. The T/D data were used to derive aquatic hazard classification outcomes under the United Nations Globally Harmonized System of Classification and Labelling of Chemicals (UN GHS) and European Union Classification, Labelling and Packaging of Substances and Mixtures (EU CLP) schemes by comparing the data with selected acute and chronic ecotoxicity reference values (ERVs) of 31 and 3.37 mg W/L, respectively. In addition to the concentration of total dissolved tungsten (W), the T/D solutions were analyzed for the concentration of the tungstate anion, because speciation can be an important factor in establishing the ecotoxicity of dissolved metals. Results show that the tungstate anion was the predominant W-bearing species in solution for all substances examined at pH 6 and 8.5. It was found that the 100 mg/L loadings of both the yellow WO and the blue WOx exceeded the 31 mg/L acute ERV, so they would classify as Acute 3-Chronic 3 under the UN GHS scheme but they would not classify under the EU CLP. An effect of pH on the reactivity of the W metal was observed with 3% and 16% W dissolution at pH 6 and 8.5, respectively. Tungsten metal would not classify under either the UN GHS or EU CLP schemes nor would the WS . The WCs were the least reactive in terms of the 1% or less dissolution of the contained W at pH 6. A critical surface area for WC was calculated. The sodium tungstate, APT and the AMT all yielded, at pH 8.5, total dissolved W concentrations that would result in UN GHS Acute 3-Chronic 3 classifications. Integr Environ Assess Manag 2018;14:498-508. © 2018 Her Majesty the Queen in Right of Canada. Integrated Environmental Assessment and Management © 2018 SETAC.

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W {normalO}_{4}^{2 -}

. This adaption to the method is new in that it provides quantitative determinations of the concentrations of total dissolved W and the

W {normalO}_{4}^{2 -}

anion in the same run, and each determination is independent of the other.…”

Section: Experimental Methodsmentioning

confidence: 99%

Transformation/dissolution characterization of tungsten and tungsten compounds for aquatic hazard classification

Huntsman

Skeaff

Pawlak

et al. 2018

Integr Envir Assess & Manag

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show abstract

“…In a recent study, Bednar et al (2007) investigated the possibility of using an HPLC-ICP-MS technique for detection and characterization of tungsten species in aqueous samples. Their method was successful in quantitative detection of monomeric species.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of analytical methods to address Tungsten speciation

2013

Global NEST Journal

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Tungsten in solution may exist as a wide variety of species depending on concentration, pH, and aging time. Despite a substantial number of studies on this topic, the speciation of tungsten in aqueous solutions is still not completely understood. To address issues of fate, transport and potential bioavailability, it is necessary to be able to assess the speciation of tungsten in environmental systems. This study investigates the use of Laser Desorption/Ionization mass spectrometry combined with a Time-of-Flight mass analyzer (LDI-TOF) as well as Raman spectroscopy as potential techniques in speciation studies. Raman spectroscopy has been successful in identifying the dominant species under a narrow range of conditions. The ultimate goal is to extend the range of conditions and concentrations while also identifying subordinate species.

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“…The toxic properties of tungsten compounds have recently been brought to the forefront with clusters of human cancer cases, such as in Fallon, NV. Such instances have made the determination of tungsten in natural water supplies vitally important [2].…”

Section: Introductionmentioning

confidence: 99%

A new and very simple procedure for the differential pulse polarographic determination of ultra trace quantities of tungsten using catalytic hydrogen wave and application to tobacco sample

Ünal

Somer

2012

Journal of Electroanalytical Chemistry

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The determination of tungsten, molybdenum, and phosphorus oxyanions by high performance liquid chromatography inductively coupled plasma mass spectrometery

Cited by 45 publications

References 11 publications

Transformation/dissolution characterization of tungsten and tungsten compounds for aquatic hazard classification

Transformation/dissolution characterization of tungsten and tungsten compounds for aquatic hazard classification

Evaluation of analytical methods to address Tungsten speciation

A new and very simple procedure for the differential pulse polarographic determination of ultra trace quantities of tungsten using catalytic hydrogen wave and application to tobacco sample

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