Speciation and determination of ultra trace amounts of inorganic tellurium in environmental water samples by dispersive liquid–liquid microextraction and electrothermal atomic absorption spectrometry

Najafi, Nahid Mashkouri; Tavakoli, Hamed; Alizadeh, Reza; Seidi, Shahram

doi:10.1016/j.aca.2010.04.059

Cited by 78 publications

(30 citation statements)

References 39 publications

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“…How can one decide which value is the right one? Accuracy is usually checked by using certified reference materials (CRM) but, in this case, their use is only mentioned in two cases [11,12] and the Te concentrations in the CRM used are much higher than expected seawater concentrations (100 µg mL −1 [11] and 1 ng mL −1 [12]). Analytical methods used were (number of studies in brackets): colorimetry (1), catalytic polarography (1), HG-AAS (4), NAA (1), ICP-MS (2), ETV-ICP-MS (1), and ETTAS (1), and no apparent relationship seems to exist between the method chosen and the range of Te concentration measured.…”

Section: Total Concentrationsmentioning

confidence: 99%

Food for Thought: A Critical Overview of Current Practical and Conceptual Challenges in Trace Element Analysis in Natural Waters

Filella

2013

Water

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Abstract:The practical and conceptual challenges faced by the analysis of trace elements present in natural waters are not merely, as is often thought, an endless race towards lower detection limits or to the development of techniques allowing the determination of any possible chemical species formed by all chemical elements. Rather, as discussed in this paper, they include the development of (i) robust, cheap, and reliable methods that could also be used by laypeople (the experience gained in the development of field kits for As is discussed as an example from which similar developments for other elements may be drawn); (ii) more environmentally-friendly methods (the current guiding criteria probably being too simplistic); and (iii) methods making it possible to follow diel concentration changes and sharp concentration variations caused by the probable increase of heavy rainfall events. This paper also claims that neither the measurement of total concentrations (reliable methods are lacking for many elements of the periodic table of trace elements, as illustrated through the cases of Bi, Te, and Sb), nor chemical speciation analysis, are as mature as often thought. In particular, chemical speciation studies demand the development of a better, comprehensive conceptual framework. A trial is carried out to lay the basis of such a framework.

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Section: Total Concentrationsmentioning

confidence: 99%

Food for Thought: A Critical Overview of Current Practical and Conceptual Challenges in Trace Element Analysis in Natural Waters

Filella

2013

Water

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“…As (V) and Sb(V) are calculated by difference. Najafi et al [166] report the DLLME application for analysis of inorganic tellurium speciation in environmental samples. This speciation is based on the selective complex formation of APDC as a chelating agent with Te(IV).…”

Section: 36mentioning

confidence: 99%

Separation and Preconcentration by Dispersive Liquid–Liquid Microextraction Procedure: Recent Applications

Ojeda

Rojas

2011

Chromatographia

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“…It took 60 min at 130 o C to complete decomposition of the substance. minerals, rocks) with tellurium content 0.0-100 mg g -1 , [24], coal, [25], in lead and lead alloys [26], in the environment (water, plants, biological materials) [27][28][29]. Such techniques as atomic emission spectrometry (AES) with inductively coupled (ICP) or microwave (MP) plasma, in conjunction with mass spectrometry, [30][31][32][33], atomic fluorescence spectrometry, [34][35][36], the optical emission spectrometry [37] are used for the tellurium and tellurium trace analysis in various objects.…”

Section: Procedures For the Decomposition Of Tellurium-containing Orgmentioning

confidence: 99%

Determination of Tellurium in Tellurium-Containing Organic Compounds by Microwave Plasma-Atomic Emission Spectrometry

Av¹,

Vp²,

Ma³

et al. 2017

Mod Chem Appl

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AbstractА method for determining tellurium in tellurium-containing organic compounds (TOC) by a microwave plasmaatomic emission spectrometer Agilent 4100 has been suggested. One of the sample decomposition methods -the oxygen flask combustion or the acid decomposition in a heating block-can be applied. Telluradiazole derivatives and some other TOC with 20 to 58% tellurium content have been analyzed. Elements such as nitrogen, sulfur, potassium, selenium present in the TOC do not prevent from determining tellurium. The relative error of the analysis is 1-5%.

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Speciation and determination of ultra trace amounts of inorganic tellurium in environmental water samples by dispersive liquid–liquid microextraction and electrothermal atomic absorption spectrometry

Cited by 78 publications

References 39 publications

Food for Thought: A Critical Overview of Current Practical and Conceptual Challenges in Trace Element Analysis in Natural Waters

Food for Thought: A Critical Overview of Current Practical and Conceptual Challenges in Trace Element Analysis in Natural Waters

Separation and Preconcentration by Dispersive Liquid–Liquid Microextraction Procedure: Recent Applications

Determination of Tellurium in Tellurium-Containing Organic Compounds by Microwave Plasma-Atomic Emission Spectrometry

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