TY  - JOUR
AU  - Ben Issa, Nureddin
AU  - Rajaković-Ognjanović, Vladana
AU  - Marinković, Aleksandar
AU  - Rajaković, Ljubinka V.
PY  - 2011
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/354
AB  - A simple and efficient method for separation and determination of inorganic arsenic (iAs) and organic arsenic (oAs) in drinking, natural and wastewater was developed. If arsenic is present in water prevailing forms are inorganic acids of As(III) and As(V). oAs can be found in traces as monomethylarsenic acid, MMA(V), and dimethylarsenic acid, DMAs(V). Three types of resins: a strong base anion exchange (SBAE) and two hybrid (HY) resins: HY-Fe and HY-AgCl, based on the activity of hydrated iron oxides and a silver chloride were investigated. It was found that the sorption processes (ion exchange, adsorption and chemisorptions) of arsenic species on SBAE (ion exchange) and HY resins depend on pH values of water. The quantitative separation of molecular and ionic forms of iAs and oAs was achieved by SBAE and pH adjustment, the molecular form of As(III) that exists in the water at pH lt 8.0 was not bonded with SBAE, which was convenient for direct determination of As(III) concentration in the effluent. HY-Fe resin retained all arsenic species except DMAs(V), which makes possible direct measurements of this specie in the effluent. HY-AgCl resin retained all iAs which was convenient for direct determination of oAs species concentration in the effluent. 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. Arsenic adsorption behavior in the presence of impurities showed tolerance with the respect to potential interference of anionic compounds commonly found in natural water. Proposed method was established performing standard procedures: with external standard, certified reference material and standard addition method. Two analytical techniques: the inductively coupled plasma mass spectrometry (ICP-MS) and atomic absorption spectroscopy-hydride generation (AAS-GH) were comparatively applied for the determination of arsenic in all arsenic species in water. ICP-MS detection limit was 0.2 mu g L(-1) and relative standard deviation (RSD) of all arsenic species investigated was between 3.5 and 5.1%.
T2  - Analytica Chimica Acta
T1  - Separation and determination of arsenic species in water by selective exchange and hybrid resins
EP  - 198
IS  - 1
SP  - 191
VL  - 706
DO  - 10.1016/j.aca.2011.08.015
ER  - 

@article{
author = "Ben Issa, Nureddin and Rajaković-Ognjanović, Vladana and Marinković, Aleksandar and Rajaković, Ljubinka V.",
year = "2011",
abstract = "A simple and efficient method for separation and determination of inorganic arsenic (iAs) and organic arsenic (oAs) in drinking, natural and wastewater was developed. If arsenic is present in water prevailing forms are inorganic acids of As(III) and As(V). oAs can be found in traces as monomethylarsenic acid, MMA(V), and dimethylarsenic acid, DMAs(V). Three types of resins: a strong base anion exchange (SBAE) and two hybrid (HY) resins: HY-Fe and HY-AgCl, based on the activity of hydrated iron oxides and a silver chloride were investigated. It was found that the sorption processes (ion exchange, adsorption and chemisorptions) of arsenic species on SBAE (ion exchange) and HY resins depend on pH values of water. The quantitative separation of molecular and ionic forms of iAs and oAs was achieved by SBAE and pH adjustment, the molecular form of As(III) that exists in the water at pH lt 8.0 was not bonded with SBAE, which was convenient for direct determination of As(III) concentration in the effluent. HY-Fe resin retained all arsenic species except DMAs(V), which makes possible direct measurements of this specie in the effluent. HY-AgCl resin retained all iAs which was convenient for direct determination of oAs species concentration in the effluent. 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. Arsenic adsorption behavior in the presence of impurities showed tolerance with the respect to potential interference of anionic compounds commonly found in natural water. Proposed method was established performing standard procedures: with external standard, certified reference material and standard addition method. Two analytical techniques: the inductively coupled plasma mass spectrometry (ICP-MS) and atomic absorption spectroscopy-hydride generation (AAS-GH) were comparatively applied for the determination of arsenic in all arsenic species in water. ICP-MS detection limit was 0.2 mu g L(-1) and relative standard deviation (RSD) of all arsenic species investigated was between 3.5 and 5.1%.",
journal = "Analytica Chimica Acta",
title = "Separation and determination of arsenic species in water by selective exchange and hybrid resins",
pages = "198-191",
number = "1",
volume = "706",
doi = "10.1016/j.aca.2011.08.015"
}

Ben Issa, N., Rajaković-Ognjanović, V., Marinković, A.,& Rajaković, L. V.. (2011). Separation and determination of arsenic species in water by selective exchange and hybrid resins. in Analytica Chimica Acta, 706(1), 191-198.
https://doi.org/10.1016/j.aca.2011.08.015

Ben Issa N, Rajaković-Ognjanović V, Marinković A, Rajaković LV. Separation and determination of arsenic species in water by selective exchange and hybrid resins. in Analytica Chimica Acta. 2011;706(1):191-198.
doi:10.1016/j.aca.2011.08.015 .

Ben Issa, Nureddin, Rajaković-Ognjanović, Vladana, Marinković, Aleksandar, Rajaković, Ljubinka V., "Separation and determination of arsenic species in water by selective exchange and hybrid resins" in Analytica Chimica Acta, 706, no. 1 (2011):191-198,
https://doi.org/10.1016/j.aca.2011.08.015 . .

TY  - JOUR
AU  - Ben Issa, Nureddin
AU  - Rajaković-Ognjanović, Vladana
AU  - Jovanović, Branislava M.
AU  - Rajaković, Ljubinka V.
PY  - 2010
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/291
AB  - A simple method for the separation and determination of inorganic arsenic (iAs) species in natural and drinking water was developed. Procedures for sample preparation, separation of As(III) and As(V) species and preconcentration of the total iAs on fixed bed columns were defined. Two resins, a strong base anion exchange (SBAE) resin and a hybrid (HY) resin were utilized. The inductively-coupled plasma-mass spectrometry method was applied as the analytical method for the determination of the arsenic concentration in water. The governing factors for the ion exchange/sorption of arsenic on resins in a batch and a fixed bed flow system were analyzed and compared. Acidity of the water, which plays an important role in the control of the ionic or molecular forms of arsenic species, was beneficial for the separation; by adjusting the pH values to less than 8.00, the SBAE resin separated As(V) from As(III) in water by retaining As(V) and allowing As(III) to pass through. The sorption activity of the hydrated iron oxide particles integrated into the HY resin was beneficial for bonding of all iAs species over a wide range of pH values from 5.00 to 11.00. The resin capacities were calculated according to the breakthrough points in a fixed bed flow system. At pH 7.50, the SBAE resin bound more than 370 mu g g(-1) of As(V) while the HY resin bound more than 4150 mu g g(-1) of As(III) and more than 3500 mu g g(-1) of As(V). The high capacities and selectivity of the resins were considered as advantageous for the development and application of two procedures, one for the separation and determination of As(III) (with SBAE) and the other for the preconcentration and determination of the total arsenic (with HY resin). Methods were established through basic analytical procedures (with external standards, certified reference materials and the standard addition method) and by the parallel analysis of some samples using the atomic absorption spectrometry-hydride generation technique. The analytical properties of both procedures were similar: the limit of detection was 0.24 mu g L-1, the limit of quantification was 0.80 mu g L-1 and the relative standard deviations for samples with a content of arsenic from 10.00 to 300.0 mu g L-1 ranged from 1.1 to 5.8%. The interference effects of anions commonly found in water and some organic species which can be present in water were found to be negligible. Verification with certified reference materials proved that the experimental concentrations found for model solutions and real samples were in agreement with the certified values.
T2  - Analytica Chimica Acta
T1  - Determination of inorganic arsenic species in natural waters-Benefits of separation and preconcentration on ion exchange and hybrid resins
EP  - 193
IS  - 2
SP  - 185
VL  - 673
DO  - 10.1016/j.aca.2010.05.027
ER  - 

@article{
author = "Ben Issa, Nureddin and Rajaković-Ognjanović, Vladana and Jovanović, Branislava M. and Rajaković, Ljubinka V.",
year = "2010",
abstract = "A simple method for the separation and determination of inorganic arsenic (iAs) species in natural and drinking water was developed. Procedures for sample preparation, separation of As(III) and As(V) species and preconcentration of the total iAs on fixed bed columns were defined. Two resins, a strong base anion exchange (SBAE) resin and a hybrid (HY) resin were utilized. The inductively-coupled plasma-mass spectrometry method was applied as the analytical method for the determination of the arsenic concentration in water. The governing factors for the ion exchange/sorption of arsenic on resins in a batch and a fixed bed flow system were analyzed and compared. Acidity of the water, which plays an important role in the control of the ionic or molecular forms of arsenic species, was beneficial for the separation; by adjusting the pH values to less than 8.00, the SBAE resin separated As(V) from As(III) in water by retaining As(V) and allowing As(III) to pass through. The sorption activity of the hydrated iron oxide particles integrated into the HY resin was beneficial for bonding of all iAs species over a wide range of pH values from 5.00 to 11.00. The resin capacities were calculated according to the breakthrough points in a fixed bed flow system. At pH 7.50, the SBAE resin bound more than 370 mu g g(-1) of As(V) while the HY resin bound more than 4150 mu g g(-1) of As(III) and more than 3500 mu g g(-1) of As(V). The high capacities and selectivity of the resins were considered as advantageous for the development and application of two procedures, one for the separation and determination of As(III) (with SBAE) and the other for the preconcentration and determination of the total arsenic (with HY resin). Methods were established through basic analytical procedures (with external standards, certified reference materials and the standard addition method) and by the parallel analysis of some samples using the atomic absorption spectrometry-hydride generation technique. The analytical properties of both procedures were similar: the limit of detection was 0.24 mu g L-1, the limit of quantification was 0.80 mu g L-1 and the relative standard deviations for samples with a content of arsenic from 10.00 to 300.0 mu g L-1 ranged from 1.1 to 5.8%. The interference effects of anions commonly found in water and some organic species which can be present in water were found to be negligible. Verification with certified reference materials proved that the experimental concentrations found for model solutions and real samples were in agreement with the certified values.",
journal = "Analytica Chimica Acta",
title = "Determination of inorganic arsenic species in natural waters-Benefits of separation and preconcentration on ion exchange and hybrid resins",
pages = "193-185",
number = "2",
volume = "673",
doi = "10.1016/j.aca.2010.05.027"
}

Ben Issa, N., Rajaković-Ognjanović, V., Jovanović, B. M.,& Rajaković, L. V.. (2010). Determination of inorganic arsenic species in natural waters-Benefits of separation and preconcentration on ion exchange and hybrid resins. in Analytica Chimica Acta, 673(2), 185-193.
https://doi.org/10.1016/j.aca.2010.05.027

Ben Issa N, Rajaković-Ognjanović V, Jovanović BM, Rajaković LV. Determination of inorganic arsenic species in natural waters-Benefits of separation and preconcentration on ion exchange and hybrid resins. in Analytica Chimica Acta. 2010;673(2):185-193.
doi:10.1016/j.aca.2010.05.027 .

Ben Issa, Nureddin, Rajaković-Ognjanović, Vladana, Jovanović, Branislava M., Rajaković, Ljubinka V., "Determination of inorganic arsenic species in natural waters-Benefits of separation and preconcentration on ion exchange and hybrid resins" in Analytica Chimica Acta, 673, no. 2 (2010):185-193,
https://doi.org/10.1016/j.aca.2010.05.027 . .