Separation and determination of arsenic species in water by selective exchange and hybrid resins

Issa, Nureddin Ben; Rajaković-Ognjanović, Vladana N.; Marinković, Aleksandar D.; Rajaković, Ljubinka V.

doi:10.1016/j.aca.2011.08.015

Cited by 74 publications

(49 citation statements)

References 22 publications

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“…12,32 Electrical differential pulse cathodic or anodic stripping voltammetry are methods that have very low detection limits. [33][34][35] Ben Issa et al 22,23 studied the separation and determination of iAs and oAs species in drinking water. For the separation of iAs and oAs, two types of resins, a strong basic anion exchange resin (SBAE) and hybrid resins (HY-Fe and HY--AgCl) were used.…”

Section: Introductionmentioning

confidence: 99%

“…The intensity of the arsenic emission is obtained by the sample entering into an ionized plasma thus producing As 75 . Ion chromatography 20,21 (IC) or ion exchange chromatographic 22,23 methods were coupled with ICP to provide separation and determination of arsenic species. High-pressure liquid chromatography (HPLC) is the preferred technique used for the separation of arsenic compounds.…”

Section: Introductionmentioning

confidence: 99%

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Separation and determination of dimethylarsenate in natural waters

Ben¹,

Marinković²,

Rajaković³

2012

JSCS

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A simple and efficient method for separation and determination of dimethylarsenate DMAs(V) was developed in this work. Two resins, a strong base anion exchange (SBAE) resin and iron-oxide coated hybrid (HY) resin were tested. By simple adjusting pH value of water at 7.00, DMAs(V) passed through the HY column without any changes, while all other arsenic species [inorganic arsenic and monomethylarsonate, MMAs(V)] were quantitatively bonded on HY resin. The resin capacity was calculated according to the breakthrough points in a fixed bed flow system. At pH 7.00 the HY resins bonded more than 4150 μg g-1 of As(III), 3500 μg g-1 of As(V) and 1500 μg g1 of MMAs(V). Arsenic adsorption behavior in the presence of impurities showed tolerance with the respect to potential interference of anions commonly found in natural water. DMAs(V) was determined in the effluent by ICP-MS. The detection limit was 0.03 μg L?1 and relative standard deviation (RSD) was between 1.1?7.5 %. Proposed method was established performing standard procedures: with external standard, certified reference material and the standard addition method

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Separation and determination of dimethylarsenate in natural waters

Ben¹,

Marinković²,

Rajaković³

2012

JSCS

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“…Chromatography is a common name for several separation methods in chemical analysis give the high sensitivity results such as arsenic species [14,17,20,82] o Chromatography can separate soluble and volatile compounds easily by choosing the experimental condition of adsorbent material and the mobil phase.…”

Section: Chromatography Methodsmentioning

confidence: 99%

“…o Chromatography is used to separate the pigments and colors components o Chromatography can separate complex compounds, such as proteins (amino acid) simply with purity separation and high precision o Chromatography costs are not high and it does not need to large and complex equipment [14,17,18].…”

Section: Chromatography Methodsmentioning

confidence: 99%

“…Under reducing conditions arsenate should be the predominant in arsenic compounds. The rate of conversion is dependent on the Eh and pH of the water [12][13][14] as a function of pH. [8,16] The arsenic compounds with low molecular weights are highly susceptible to dissolution of the organic material and the formation of complexes, and on this basis, the disposal of arsenic will change depending on the circumstances of reductions provided by the organic matter.…”

Section: Effect Of Ph and Eh On The Distribution Of Arsenic Species Imentioning

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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