Determination of arsenic by pervaporation-flow injection hydride generation and permanganate spectrophotometric detection

Rupasinghe, Thusitha; Cardwell, Terence J.; Cattrall, Robert W.; Potter, Ian D.; Kolev, Spas D.

doi:10.1016/j.aca.2004.01.006

Cited by 35 publications

(27 citation statements)

References 21 publications

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“…The linear range obtained in this work was similar to the 0 to 10 mg L À1 (n ¼ 6) described by Na¨ykki et al (2001) and narrower than 0.25 to 2000 mg L À1 detected by Rupasinghe et al (2004). However, in both papers the authors only evaluated the R 2 as a linearity indicator.…”

Section: Resultssupporting

confidence: 48%

In-house method validation: Application in arsenic analysis

Souza

Pinto

Junqueira

2007

Journal of Food Composition and Analysis

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Section: Resultssupporting

confidence: 48%

In-house method validation: Application in arsenic analysis

Souza

Pinto

Junqueira

2007

Journal of Food Composition and Analysis

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“…Total As could be measured only after in-line pre-reduction of the sample [38], making for an undeniably complex arrangement. Another attractive photometric approach is to convert the As to AsH 3 and concentrating the AsH 3 thus liberated into a suitable oxidant receiver such as KMnO 4 or triiodide and determining it by direct colorimetry or after the molybdate reaction [39][40][41]. This approach can be attractive because borohydride based reduction can exploit pH control to generate AsH 3 from all As species or from As(III) alone [42][43][44][45].…”

Section: Spectrophotometric Methodsmentioning

confidence: 99%

“…The resins also provides the advantage of reducing the chloride ion of the sample in the effluent which reduces the problems with polyatomic species 40 Ar 35 Cl + which could be formed in the plasma and has the same m/z value as naturally occuring 75 As isotope. According to this result, the combination of these three resins can be recommended for the separation processes and quantitative determination of iAs and oAs in real water samples.…”

Section: Interference Of Inorganic Ions On Determination Of Oas Speciesmentioning

confidence: 99%

“…The major interference for arsenic determination by ICP-MS is the polyatomic species 40 Ar 35 Cl + , which is sometimes formed in the plasma and has the same m/z value as the only naturally occurring 75 As isotope. Drinking water samples have a relatively high level of chlorine and the procedure with the SBAE resin even increases the level of chlorine (due to exchange with Cl -ions during exchange process), hence the 35 Cl + ion should be monitored in addition to the 75 As + signal during each run.…”

Section: Interferences During the Icp-ms Measurementsmentioning

confidence: 99%

“…Vassileva et al [121] used (IC-ICP-MS) for separation and determination As(III)), As(V), MMAs(V), DMAs(V) and AsB, the proposed method has been successfully applied to the analysis of groundwater and extracts of contaminated soils. No interference of 40 Ar, 35 Cl and 75 As was observed when natural water samples were analyzed; the detection limits for the arsenic species are in the range 0.4-0.8 µg/L. Pizarro et al [122] in this study arsenic species were quantified by (HPLC), (anionic and cationic chromatographic column) coupled to (ICP-MS), the As(III), As(V), MMAs(V) and DMAs(V) was quantified measured in rice and soil whereas AsB, DMAs(V) and an unknown arsenic species were quantified in chicken tissue.…”

Section: Hplc-icp (Ms / Oes)mentioning

confidence: 99%

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The development and application of hybrid sorbents for determination and selective removal of arsenic(III) and arsenic(V) from water

Issa¹

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AcknowledgementsFirst of all, I would like to thank my supervisor, Prof. dr Ljubinka Rajakovic, for her guidance, patience and enthusiasm concerning this thesis. Without her support, thesis would not have been finished. Then I would like to thank all of the professors and staff at the department of Analytical chemistry. I would like to thank everybody working at the TMF for welcoming me and helping me with the different problems that occurred during my stay.I also want to thank all of my friends who were supporting me.At last, but not the least, I would like to thank my family. A special thanks to my wife for her support for all of my endeavors. THE DEVELOPMENT AND APPLICATION OF HYBRID SORBENTS FOR DETERMINATION AND SELECTIVE REMOVAL OF ARSENIC(III) AND ARSENIC(V) FROM WATER ABSTRACTThe aim of the thesis was the development and application of hybrid sorbents for determination of arsenic species in water and selective removal of arsenic from water. Water soluble arsenic species in natural water are inorganic (iAs) species, as arsenite, As(III) and arsenate, As(V).It is important to note that in neutral conditions, As(V) species are completely in ionic forms (H 2 AsO 4 -and HAsO 4 2-), while As(III) is in molecular form (H 3 AsO 3 or HAsO 2 ). This fact was the base for the application of anion exchange resin and selective hybrid resins for the separation, determenation and removal of iAs. As a result of anthropogenic pollution in water can be present organic (oAs) species as monomethylarsenic acid, MMAs(V) and dimethylarsenic acid, DMAs(V). Methods developed for iAs species should consider oAs species as interferences for the iAs determinations.In the frame of these tasks, efficiency of three types of resins were investigated: a strong base anion exchange (SBAE) resin and two hybrid (HY) resins, HY-Fe which integrates sorption activity of hydrated iron oxides (HFO) with the anion exchange function and HY-AgCl which integrates effects of chemical reaction with the anion exchange function. Two systems were employed: a batch and a fixed bed flow system. The selective bonding of arsenic species on three types of resins makes possible the development of the procedure for measuring and calculation of all arsenic species in water. In order to determine capacity of resins, the preliminary investigations were performed in batch system and fixed bed flow system. Resin capacities were calculated according to breakthrough points in a fixed bed flow system which is the first step in designing of solid phase extraction (SPE) module for arsenic speciation separation and determination.The investigations performed in the scope were focused on: I) separation of As(III) and As(V) species (in order to determine both arsenic species which are prevailing in natural waters), II) separation of organic arsenic species (in order to determine of DMAs(V) and MMAs(V) in natural waters) and III) collection, preconcentration and removal of all arsenic species.The main achievement of thesis is that three methods for arsenic species determinati...

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Development of Measurement Technologies for Low‐Cost, Reliable, Rapid, On‐Site Determination of Arsenic Compounds in Water

Tyson

2008

Arsenic Contamination of Groundwater

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Determination of arsenic by pervaporation-flow injection hydride generation and permanganate spectrophotometric detection

Cited by 35 publications

References 21 publications

In-house method validation: Application in arsenic analysis

In-house method validation: Application in arsenic analysis

The development and application of hybrid sorbents for determination and selective removal of arsenic(III) and arsenic(V) from water

Development of Measurement Technologies for Low‐Cost, Reliable, Rapid, On‐Site Determination of Arsenic Compounds in Water

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