Determination of trace arsenic with DDTC-Na by cathodic stripping voltammetry in presence of copper ions

Piech, Robert; Kubiak, Władysław W.

doi:10.1016/j.jelechem.2006.09.004

Cited by 34 publications

(21 citation statements)

References 20 publications

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“…This methodology has been extended [16] but still requires the formation of in-situ formed nanoparticles on solid electrode substrates. Other approaches have explored the addition of complexing agents to the electrolyte [22,23] or via modification of gold macroelectrodes with cysteine allowing the separation of the arsenic(III) and copper(II) stripping peaks [24]. An alternative is to avoid the use of anodic stripping voltammetry and use in-situ formed platinum nanoparticles on solid electrodes based on the direct oxidation of arsenic(III) to arsenic(V) but lacks sensitivity [25].…”

Section: Introductionmentioning

confidence: 99%

Gold Nanoparticle Modified Screen Printed Electrodes for the Trace Sensing of Arsenic(III) in the Presence of Copper(II)

et al. 2010

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Gold ensembles for the trace level sensing of arsenic(III) in the presence of copper(II) are reported. The gold ensembles are fabricated using citrate capped gold nanoparticles which are chemically synthesised in an aqueous solution with an aliquot of this simply cast onto an economical and disposable screen printed electrode. After drying at room temperature, the gold ensembles are ready for use. The gold ensembles are explored towards the sensing of arsenic(III) in the presence of copper(II) using anodic stripping voltammetry where the corresponding stripping peaks are well resolved and using this protocol it is possible to readily detect 3 mg L À1 (3 ppb) with a detection limit of 0.4 mg L À1 (0.4 ppb). Proof-of-concept is also shown for the sensing of arsenic(III) in a canal water sample. Given the low cost of the sensor and ease of fabrication, the gold ensembles hold promise for the sensing of arsenic(III) in water samples where copper(II) may be present.

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Section: Introductionmentioning

confidence: 99%

Gold Nanoparticle Modified Screen Printed Electrodes for the Trace Sensing of Arsenic(III) in the Presence of Copper(II)

et al. 2010

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“…Arsenic (III) is the most toxic compound, when compared with arsenic (V) and its organic forms; therefore its determination is an important analytical challenge 1 . In terms of comparison between inorganic species, the trivalent state is approximately 60 times more toxic than the pentavalent form; on the other hand the organic compounds are 100 times less dangerous compared to inorganic compounds 2 .…”

Section: Introductionmentioning

confidence: 99%

“…The HMDE offers the advantage of continuous renewal of the electrode surface, and it is even possible to use it as static mercury drop electrode (SMDE) for which a minimal amount of mercury is used [20][21][22][23][24][25][26][27][28][29][30][31] . CSV is used to determine low concentrations of As, it is necessary to carry out the As (III) deposition in the surface of mercury, the formation of an intermetallic compound, being Cu 29,31 and Se 28 used for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Determination of Arsenic (Iii) by Differential Pulse Polarography in the Waters of Camarones Area, Chile

Gamboa

Cornejo

Acarapi³

et al. 2013

J. Chil. Chem. Soc.

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As (III) was determined by differential pulse polarography (DPP) in 1 mol L -1 HCl as supporting electrolyte. For quantification, the -0.35 V peak (versus Ag/ AgCl) was chosen. The obtained detection and quantification limits were 2.7 (3 SD) and 8.9 (10 SD) μg L -1 respectively. The method was used for the determination of As (III) on surface water samples from Camarones River, located in Camarones area, province of Arica, Chile (this area's water contain high levels of salinity). The results indicate that the proposed methodology is a suitable analytical alternative for As determination in natural waters with high levels of dissolved salts, as the waters of Camarones River. The method is not time consuming, nor tedious no prior treatment of the sample is required. The results show that As (III) concentrations in waters of Camarones River are about 10 times higher than the guide values established by WHO for water intended for human consumption.

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“…[8][9][10][11][12][13][14] The present investigation was prompted by a desire to develop an alternative method for determination of bismuth based on adsorptive accumulation stripping voltammetry. The present scheme, based on the accumulation and reduction of bismuth-XO complex, offers both sensitivity and selectivity, and represents an attractive alternative to conventional stripping measurements of bismuth.…”

mentioning

confidence: 99%

Determination of Trace Amounts of Bismuth in Pharmaceutical and Water by Adsorptive Cathodic Stripping Voltammetry in the Presence of Xylenol Orange

Yazdanipour¹,

Aniazi²,

Folad³

et al. 2012

Orientjchem.

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Determination of trace arsenic with DDTC-Na by cathodic stripping voltammetry in presence of copper ions

Cited by 34 publications

References 20 publications

Gold Nanoparticle Modified Screen Printed Electrodes for the Trace Sensing of Arsenic(III) in the Presence of Copper(II)

Gold Nanoparticle Modified Screen Printed Electrodes for the Trace Sensing of Arsenic(III) in the Presence of Copper(II)

Determination of Arsenic (Iii) by Differential Pulse Polarography in the Waters of Camarones Area, Chile

Determination of Trace Amounts of Bismuth in Pharmaceutical and Water by Adsorptive Cathodic Stripping Voltammetry in the Presence of Xylenol Orange

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