Simultaneous determination of arsenic(III) and arsenic(V) in metallurgical processing media by ion chromatography with electrochemical and conductivity detectors

Tan, Liang K.; Dutrizac, J. E.

doi:10.1021/ac00298a026

Cited by 37 publications

(5 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All of these methods require expensive instrumentation and are essentially sensitive to total arsenic. In contrast, electrochemical detection methods are instrumentally inexpensive and species sensitive, with methods being available to specifically detect the highly toxic As(III) in flowing streams (31)(32)(33). While electrochemical detection can often lack the ability to descriminate between species with similar redox characteristics, the resolving power of liquid chromatography permits the removal of other chemical species from interfering with As(III), as well as providing additional information on the sample matrix.…”

Section: Introductionmentioning

confidence: 99%

Liquid chromatography-electrochemical detection of inorganic arsenic using a wall jet cell with conventional and microsized platinum disk electrodes

Stojanovic¹,

Bond²,

Butler³

1990

Anal. Chem.

View full text Add to dashboard Cite

A critical evaluation of a highly sensitive and specific liquid chromatography amperometric detection method (wall jet cell) for the determination of arsenic has been undertaken with platinum disk electrodes of variable size. The limit of detection is considerably tower with platinum disk electrodes of conventional size (millimeter radius) than Is the case with microelectrodes (radius in micrometer range) because of a more favorable signal to noise ratio Thus, the determination of arsenic is readily achieved In a bottled mineral water sample with a conventional size electrode, whereas the arsenic levels are too tow to be detected precisely with a microelectrode. However, with respect to the desirable properties of a tower dependence on flow rate and a shorter time taken to achieve a stable baseline, and In cases where sensitivity is not a problem, the microelectrode method is advantageous. The method for detection of arsenic Involves a surface-based oxidation process In which As(III) is converted to As(V). This work suggests that advantages and disadvantages offered by using microelectrodes as an alternative to conventionally sized electrodes are critically dependent on the mechanism of the electrode process.

show abstract

Section: Introductionmentioning

confidence: 99%

Liquid chromatography-electrochemical detection of inorganic arsenic using a wall jet cell with conventional and microsized platinum disk electrodes

Stojanovic¹,

Bond²,

Butler³

1990

Anal. Chem.

View full text Add to dashboard Cite

show abstract

“…This is the modified method of Tan et al 4 , having advantage of better resolution and ease of use. Two individual standard solutions for arsenite and arsenate were prepared and injected separately for peak identification.…”

Section: Resultsmentioning

confidence: 99%

“…Solid electrodes are prone to complicated surface renewal problems. Oxide film formation causes non-reproducible currents during the electrolytic oxidation of arsenic solutions 1,4 . To overcome this problem, platinum working electrode was reconditioned before starting the analysis at a potential of -0.80V and at +0.60V for less than 30 seconds each and then the potential was reset to +0.40 V and then was equilibrated for 20 minutes The suppressor used was DIonex ASRS 300 (4 mm).…”

Section: Methodsmentioning

confidence: 99%

Ion Chromatographic Estimation of Arsenite and Arsenate at Trace Level

Chavan¹,

Bhate²,

Thaker³

et al. 2011

Journal of Chemistry

View full text Add to dashboard Cite

Present method shows simple and specific determination of traces of inorganic arsenic in water. This method enables simultaneous determination of arsenite by electrochemical detection and arsenate by suppressed conductivity detection. The applicability of this method was illustrated by determining the inorganic arsenite and arsenate content from bore-well water and river water samples without any special pretreatment. The present method for direct determination of arsenite and arsenate shows good sensitivity, selectivity, precision and accuracy. Detection limits determined using this procedure was found to be 2.0 μg/L for arsenite and 30.0 μg/L for Arsenate. The simplicity, ease of use, low detection limit and low running cost of this method makes it appealing for increasing capability of testing in the lab.

show abstract

“…Tan et al 5 studied the effect of the concentration of common anions on the determination of HAsO 4 2-. The change in the arsenate peak height might have occurred due to the competition between the arsenate and other anions for the active sites on the resin in analytical columns during the exchange with eluent anions.…”

Section: Introductionmentioning

confidence: 99%

Effects of High Concentration of Chloride on the Determination of Trace Anions by Ion Chromatography

Lü

Mou

Riviello³

2000

Journal of Liquid Chromatography & Related Technologies

View full text Add to dashboard Cite

Using both UV-Vis and conductivity detectors, the effects of high concentration of chloride on the determination of trace anions were studied on three different analytical columns by ion chromatography. The variations of retention behavior of these anions were caused by self-elution effect and on-column eluent change in the presence of high concentration of chloride. As the chloride concentration increased, linear ranges of the other anions became narrow. The anions separated on the column, which had higher capacity and had wider linear ranges. When their peaks overlapped with chloride, the deviations of weak acid anions were caused by anion-proton interactions within the suppressor. However, the other weak acid anions, which could not overlap with chloride and the strong acids anions, were not affected. In this paper, accurately quantitative analysis methods and their linear ranges were determined.

show abstract

Simultaneous determination of arsenic(III) and arsenic(V) in metallurgical processing media by ion chromatography with electrochemical and conductivity detectors

Cited by 37 publications

References 35 publications

Liquid chromatography-electrochemical detection of inorganic arsenic using a wall jet cell with conventional and microsized platinum disk electrodes

Liquid chromatography-electrochemical detection of inorganic arsenic using a wall jet cell with conventional and microsized platinum disk electrodes

Ion Chromatographic Estimation of Arsenite and Arsenate at Trace Level

Effects of High Concentration of Chloride on the Determination of Trace Anions by Ion Chromatography

Contact Info

Product

Resources

About