A rapid and highly sensitive single-sweep polarographic method of analysis for arsenic(III) in drinking water

Whitnack, Gerald C.; Brophy, Richard

doi:10.1016/s0003-2670(01)85249-1

Cited by 31 publications

(9 citation statements)

References 1 publication

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“…Likewise, the sensitivity and precision of the ASV measurement itself was dictated by conditions of the measurement matrix (i.e., in this case, the HC1 solution produced by bubbling HC1 vapor through the deionized water in the collection cell) as indicated in Table I. Hence, it was necessary to acquire some knowledge of (1) the change in volume of the 4 mL of deionized water in the course of reductillation and (2) the change in concentrations of HC1 in the collection solution during reductillation. 'The average change in volume during reductillation as determined by duplicate runs on 5 separate samples (i.e., a total of 10 runs) was 0.48 mL giving an average final volume in the analysis cell of 4.48 mL.…”

Section: Resultsmentioning

confidence: 99%

Determination of total arsenic at the nanogram level by high-speed anodic stripping voltammetry

Davis¹,

Dulude²,

Griffin³

et al. 1978

Anal. Chem.

111

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Section: Resultsmentioning

confidence: 99%

Determination of total arsenic at the nanogram level by high-speed anodic stripping voltammetry

Davis¹,

Dulude²,

Griffin³

et al. 1978

Anal. Chem.

111

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“…-Polarography (Linear Sweep Voltammetry (LSV) at the Hanging Mercury Drop Electrode (HMDE)): Unfortunately, LSV, the oldest electrochemical method for the determination of trace inorganic metals provides poor detection limits due to high capacitive currents [31][32][33]. Differential pulse polarography (DPP) reduces capacitive currents and thus improves the detection limit.…”

Section: Electrochemical Proceduresmentioning

confidence: 99%

“…and therefore provides a weaker signal when it is anodically stripped using DPP [34]. Other polarographic techniques for arsenic determination include ac/dc polarography, oscillography [35], square wave polarography [36], rapid linear sweep polarography [32], etc. They are performed under acidic conditions in perchloric, hydrochloric, nitric and sulfuric acids or a combination of two.…”

Section: Electrochemical Proceduresmentioning

confidence: 99%

Analytical Tools for Monitoring Arsenic in the Environment

Luong¹,

Majid²,

Male³

2007

TOACJ

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Inorganic arsenic possesses the highest toxicity threat amongst all its forms found in natural groundwater and its mobility in aquatic systems and in the soil is of great environmental concern. Besides their toxicity to humans, arsenate and arsenite are highly toxic to plants. Arsenic can only be transformed into a less-toxic material and becomes a permanent part of the environment. Thus, there is a continuing need for its monitoring at arsenic-containing sites where it occurs naturally at elevated levels. This report reviews technologies with the potential to measure and monitor arsenic in the environment. However, we focus on the modern electrochemical methods of arsenic detection in drinking water. The pros and cons of such techniques are discussed with respect to their sensitivity, ability to detect the chemical states of arsenic, reliability, potential interferences, and ease of operation. In particular, emphasis has been devoted to more recent topics including modern stripping voltammetry, electrode modification, nanomaterials, and biosensors. The necessity for field instrumentation, detection and monitoring has also been addressed.

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“…Still, the DC-polarographic quantification of As(III) in natural waters, with a limit of detection of 5 ppb using the dropping mercury electrode (DME) and H 2 SO 4 as electrolyte, was reported [42]. Arsenate can also be indirectly determined upon derivatization to arsenomolybdic acid by ammonium paramolybdate, solvent extraction and catalytic polarography in nitrate medium [43].…”

Section: Voltammetric Determination Of Arsenic At Trace Levelsmentioning

confidence: 99%

Analysis and Speciation of Traces of Arsenic in Environmental, Food and Industrial Samples by Voltammetry: a Review

Cavicchioli¹,

La-Scalea

Gutz³

2004

Electroanalysis

103

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Voltammetric approaches for the determination of arsenic and speciation at trace levels are critically appraised in a review covering the literature from 1970 to 2002. Special attention is devoted to stripping modes and to issues related to the choice of working material and supporting electrolyte. A section is dedicated to the management of real samples and aspects of sample preparation. An extensive compilation, organized by real sample type, gathers essential experimental conditions. Potentiometric stripping analysis is introduced for sake of comparison. The coupling of voltammetric detection or preaccumulation with FIA, chromatography, capillary electrophoresis and ICP techniques is also addressed.

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A rapid and highly sensitive single-sweep polarographic method of analysis for arsenic(III) in drinking water

Cited by 31 publications

References 1 publication

Determination of total arsenic at the nanogram level by high-speed anodic stripping voltammetry

Determination of total arsenic at the nanogram level by high-speed anodic stripping voltammetry

Analytical Tools for Monitoring Arsenic in the Environment

Analysis and Speciation of Traces of Arsenic in Environmental, Food and Industrial Samples by Voltammetry: a Review

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