Separation and enrichment of Cr(VI) ion in waters using solid phase extraction and evaluation of adsorption, kinetic and thermodynamic parameters
Yıl 2024,
Cilt: 11 Sayı: 22, 55 - 71, 31.12.2024
Adelet Tunçeli
,
Hatice Şahin
,
Özcan Yalçınkaya
,
Orhan Acar
Öz
Cr(III) and Cr(VI) ions in waters were separated by using column method containing Amberlite IRA 900 copolymer resin. Cr(VI) ion was separated, pre-concentrated and determined by using flame atomic absorption spectrometry. After oxidizing all Cr(III) into Cr(VI) with H2O2, whole chromium (Cr(III) + Cr(VI) ions) was determined. Concentration of Cr(III) was obtained by subtracting Cr(VI) level from whole chromium. Recovery of Cr(VI) ion at optimum conditions such as pH (5.5 – 6), type and concentration of eluent solution (5 mL of 1 mol/L HCl + 2% (m/v) ascorbic acid) and flow rate (3 mL/min) obtained was 99 ± 1% for five replicate measurements. Analytical detection and quantification limits were found as 0.11 and 0.38 µg/L, respectively. The enrichment factor of Cr(VI) ion found was about 100 after using optimization conditions. Accuracy of proposed method was checked by analyzing Cr(VI) in CWW-TM-D Wastewater (SRM) containing Cr(III) and Cr(VI) ions and applied to real waters. Langmuir adsorption model was suitable for Cr(VI) ion and maximum adsorption capacity found was 303 mg/g at 298 K. Thermodynamic parameters (ΔG°, ΔH° and ΔS°) and activation energy (Ea) were determined. Adsorption of Cr(VI) ion on resin was chemical ion-exchange, spontaneous and exothermic process.
Kaynakça
- Aksu, Z., (2002). “Determination of the equilibrium, kinetic and thermodynamic parameters of the batch biosorption of nickel(II) ions onto Chlorella vulgaris”, Process Biochemistry, 38: 89 – 99,
- Aydın, F.A., Soylak, M., (2009). “Thulium hydroxide: A new coprecipitant for speciation of chromium in natural water samples”, J. Hazard. Mater., 162: 1228–1232,
- Bahadır, Z., Bulut, V.N., Hidalgo, M., Soylak, M., Margui, E., (2016). “Cr speciation in water samples by dispersive liquid-liquid micro extraction combined with total reflection X-ray fluorescence spectrometry”, Spectrochim Acta Part B, 115: 46–51
- Ball, J.W., McCleskey, R.B., (2003). “A new cation-exchance method for accurate field speciation of hexavalent chromium”, Talanta, 61: 305–313,
- Béni, A., Karosi, R., Posta, J., (2007). “Speciation of hexavalent chromium in waters by liquid-liquid extraction and GFAAS determination”, Microchem. J., 85: 103–108
- Berbar, Y., Amara, M., & Kerdjoudj, H. (2008). Anion exchange resin applied to a separation between nitrate and chloride ions in the presence of aqueous soluble polyelectrolyte. Desalination, 223(1-3), 238-242.
- Bobrowski, A., Baś, B., Dominik, J., Niewiara, E., Szalińska, E., Vignati, D., Zarębski, J., (2004). “Chromium speciation study in polluted waters using catalytic adsorptive stripping voltammetry and tangential flow filtration”, Talanta, 63: 1003–1012,
- Cavoca, S.A., Fernandes, S., Augusto, C.M., Quina, M.J., Gando-Ferreira, L.M., (2009). “Evaluation of chelating ion-exchange resins for separating Cr(III) from industrial effluents”, J. Hazard. Mater., 169: 516–523,
- Chamjangali, M.A., Goudarzi, N., Mirheidari, M., Bahramian, B. (2011). “Sequential eluent injection technique as a new approach for the on-line enrichment and speciation of Cr(III) and Cr(VI) species on a single column with FAAS detection”, J. Hazard. Mater., 192: 813–821,
- Chwastowska, J., Skwara, W., Sterlińska, E., Pszonicki, L., (2005). “Speciation of chromium in mineral waters and salinas by solid-phase extraction and graphite furnace atomic absorption spectrometry”, Talanta, 66: 1345 – 1349
- Deng, S., Wang, P., Zhang. G., Dou, Y., (2016). “Polyacrylonitrile-based fiber modified with thiosemicarbazide by microwave irradiation and its adsorption behavior for Cd(II) and Pb(II)”, J. Hazard. Mater., 307: 64–72,
- El-Shahawi, M.S., Hassan, S.S.M., Othman, A.M., El-Sonbati, M.A., (2008). “Retention profile and subsequent chemical speciation of chromium (III) and (VI) in industrial wastewater samples employing some onium cations loaded polyurethane foams”, Microchemical J. 89: 13-19,
- Esfandian, H., Ghanbari Pakdehi, S., Cattallany, M., (2020). “Development of a novel method for sodium azide removal from aqueous solution using amberlite IRA-900: batch and column adsorption studies”, Desalination and Water Treatment, 193: 381–391,
- Gu, Y., Zhu, X., (2011). “Speciation of Cr(III) and Cr(VI) ions using a β-cyclodextrin-crosslinked polymer micro-column and graphite furnace atomic absorption spectrometry”, Microchim. Acta, 173: 433 – 438
- Hasayn, S.M., Saeed, M.M., Ahmed, M., (2002). “Sorption and thermodynamic behavior of zinc(II)-thioctnate complexes onto polyurethane foam from acidic solutions. J. Radioanal. Nucl. Chem., 252(3): 477–484,
- Hashemi, P., Boroumand, J., Fat’hi, M.R., (2004). “A dual column system using agrose-based adsorbents for preconcentration and speciation of chromium in water”, Talanta, 64: 578–583,
- Hassanien, M.M., Kenawy, I.M., El-Menshawy, A.M., El-Asmy, A.A., (2008). “A novel method for speciation of Cr(III) and Cr(VI) and individual determination using Duolite C20 modified with active hydrazine”, J. Hazard. Mater., 158: 170–176
- Hosseini, M.S., Belador, F., (2009). “Cr(III)/Cr(VI) speciation determination of chromium in water samples by luminescence quenching of quercetin”, J. Hazard. Mater., 165: 1062–1067,
- Jachuła, J., Hubicki, Z. (2013). “Removal of Cr(VI) and As(V) ions from aqueous solutions by polyacrylate and polystyrene anion exchange resins”, Appl. Water Sci., 3: 653 – 664,
- Kalidhasan, S., Rajesh, N., (2009). “Simple and selective extraction process for chromium (VI) in industrial wastewater”, J. Hazard. Mater., 170: 1079–1085,
- Karthik, R., Meenakshi, S., (2015). “Synthesis, characterization and Cr(VI) uptake study of polyaniline coated chitin”, Intern. J. Biolog. Macromolec., 72: 235–242,
- Kendüzler, E., Yalçınkaya, Ö., Baytak, S., Türker, A.R., (2007). “Application of full factorial design for the preconcentration of chromium by solid phase extraction with Amberlyst 36 resin”, Microchim. Acta, 160; 389–395,
- Kiran, K., Kumar, K.S., Prasad, B., Suvardhan, K., Babu, L.R., Janardhanam, K., (2008). “Speciation determination of chromium (III) and (VI) using preconcentration cloud point extraction with flame atomic absorption spectrometry (FAAS)”, J. Hazard. Mater., 150: 582–586,
- Li, G., Zhang, A., Qi, X., Yan, G., Zhi, G., (2023). “Arsenic removal from aqueous solution by chitosan loaded with Al/Ti elements”, Sep. Sci. Technol., 58(13): 2298-2306,
- Liang, P., Shi, T., Lu, H., Jiang, Z., Hu, B., (2003). “Speciation of Cr(III) and Cr(VI) by nanometer titanium dioxide micro-column and inductively coupled plasma atomic emission spectrometry”, Spectrochim. Acta Part B, 58: 1709 – 1714
- Mariano Alegre, D.C., Dos Santos, P.M., De Oliveira, P.C., Tarley, C.R.T., Barros, W.R.P., Corazza, M.Z., (2021). “Simple and efficient method for the determination of Cr(VI) ions in water samples using m- MWCNT@APTMS through dispersive magnetic solid phase extraction”, Intern. J. Environ. Anal. Chem., 103(8), 1–19,
- Mohan, D., Pittman Jr, C.U., (2006). “Activated carbons and low cost adsorbents for remediation of tri- and hexavalent chromium from water”, J. Hazard. Mater., 137: 762–811,
- Motomizu, S., Jitmanee, K., Oshima, M., (2003). “On-line collection/concentration of trace metals for spectroscopic detection via use of small-sized thin solid phase (STSP) column resin reactors. Application to speciation of Cr(III) and Cr(VI)”, Anal. Chim. Acta, 499: 149 – 155,
- Mustapha, S., Shuaib, D.T., Ndamitso Etsuyankpa, M.M., Sumaila, M.B., (2019). “Adsorption isotherm, kinetic and thermodynamic studies for the removal of Pb(II), Cd(II), Zn(II) and Cu(II) ions from aqueous solutions using Albizia lebbeck pods”, Applied Water Science, 9(6): 142.,
- Narin, I., Kars, A., Soylak, M., (2008). “A novel solid phase extraction procedure on Amberlite XAD-1180 for speciation of Cr(III), Cr(VI) and total chromium in environmental and pharmaceutical samples”, J. Hazard. Mater., 150: 453-458,
- Pomeroy, S. L., Tamayo, P., Gaasenbeek, M., Sturla, L. M., Angelo, M. (2002).,“Prediction of central nervous system embryonal tumor outcome based on gene expression”, Letter to Nature, 436-442,
- Sadeghi, S., Moghaddam, A.Z., (2016). “Multiple response optimization of sequential speciation of chromium in water samples by in situ solvent formation dispersive liquid–liquid microextraction prior to electrothermal atomic absorption spectrometry determination”, J. Iranian Chem. Soc., 13: 117–130
- Sahayam, A.C., (2002). “Speciation of Cr(III) and Cr(VI) in potable water by using activated neutral alumina as collector and ET-AAS for determination”, Anal. Bioanal. Chem., 372: 840–842
- Sarı, A., Tüzen, M., (2009). “Kinetic and equilibrium studies of biosorption of Pb(II) and Cd(II) from aqueous solution by macrofungus (Amanita rubescens) biomass”, J. Hazard. Mater., 164: 1004–1011,
- Sumida, T., Ikenoue, T., Hamada, K., Sabarudin, A., Oshima, M., Motomizu, S., (2005). “On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry”, Talanta, 68: 388 – 393
- Tan, L.C., Calix, E.M., Rene, E.R., Nancharaiah, Y.V., Van Hullebusch, E.D., Lens, P.N.L., (2018). “Amberlite IRA-900 Ion Exchange Resin for the Sorption of Selenate and Sulfate: Equilibrium, Kinetic, and Regeneration Studies”, J. Environ. Eng., 144(11): 04018110
- Tunçeli, A., Türker, A.R., (2002). “Speciation of Cr(III) and Cr(VI) in water after preconcentration of its 1,5-diphenylcarbazone complex on amberlite XAD-16 resin and determination by FAAS”, Talanta, 57: 1199–1204,
- Tunçeli, A., Ulaş, A., Acar, O., Türker, A.R., (2022). “Adsorption isotherms, kinetic and thermodynamic studies on cadmium and lead ions from water solutions using Amberlyst 15 resin”, Turk J. Chem., 46: 193-205,
- Tunçeli, A., Yalçınkaya, Ö., Türker, A.R., (2013). “Solid phase extraction of Pb(II) in water samples on Amberlite 36 and determination of the equilibrium, kinetic and thermodynamic parameters of the adsorption. Curr. Anal. Chem., 9(3): 513-521,
- Türker, A.R., (2007). “New Sorbents for Solid-Phase Extraction for Metal Enrichment”, Clean-Soil Air Water, 35: 548 -557,
- Tüzen, M., Soylak, M., (2007). “Multiwalled carbon nanotubes for speciation of chromium in environmental samples”, J. Hazard. Mater., 147: 219–225,
Uluozlu, O.D., Tüzen, M., Soylak, M., (2009). “Speciation and separation of Cr(VI) and Cr(III) using coprecipitation with Ni2+/2-Nitroso-1-naphthol-4-sulfonic acid and determination by FAAS in water and food samples”, Food Chem. Toxicol., 47: 2601–2605,
- Wang, F., Lu, X., Yan, L.-X., (2016). “Selective removals of heavy metals (Pb2+, Cu2+, and Cd2+) from wastewater by gelation with alginate for effective metal recovery”, J. Hazard. Mater., 308: 75–83,
- Wang, L.L., Wang, J.Q., Zheng, Z.X., Xiao, P., (2010). “Cloud point extraction combined with high-performance liquid chromatography for speciation of chromium(III) and chromium(VI) in environmental sediment samples”, J. Hazard. Mater., 177: 114 – 118,
- WHO (World Health Organization) (1984). “Guidelines for Drinking Water Quality: Health Criteria and Supporting Information”, World Health Organization, Vol. II Geneva, Switzerland
- Xiong, C., Wang, W., Tan, F., Luo, F., Chen, J., (2015). “Investigation on the efficiency and mechanism of Cd(II) and Pb(II) removal from aqueous solutions using MgO nanoparticles”, J. Hazard. Mater., 299: 664–674.
- Yalçin, S., Apak, R., (2004). “Chromium (III, VI) speciation analysis with preconcentration on a maleic acid-functionalized XAD sorbent”, Anal. Chim. Acta, 505: 25-35
- Yang, N., Li, J., Wang, J., (2007). “Field speciation of chromium with a sequential injection lab-on-valve incorporating a bismuthate immobilized micro-column”, Talanta, 72: 1710–1716
- Zarghami, Z., Akbari, A., Latifi, A.M., Amani, M.A., (2016). “Design of a new integrated chitosan-PAMAM dendrimer biosorbent for heavy metals removing and study of its adsorption kinetics and thermodynamics”, Bioresour. Technol. 205: 230–238,
Separation and enrichment of Cr(VI) ion in waters using solid phase extraction and evaluation of adsorption, kinetic and thermodynamic parameters
Yıl 2024,
Cilt: 11 Sayı: 22, 55 - 71, 31.12.2024
Adelet Tunçeli
,
Hatice Şahin
,
Özcan Yalçınkaya
,
Orhan Acar
Öz
Cr(III) and Cr(VI) ions in waters were separated by using column method containing Amberlite IRA 900 copolymer resin. Cr(VI) ion was separated, pre-concentrated and determined by using flame atomic absorption spectrometry. After oxidizing all Cr(III) into Cr(VI) with H2O2, whole chromium (Cr(III) + Cr(VI) ions) was determined. Concentration of Cr(III) was obtained by subtracting Cr(VI) level from whole chromium. Recovery of Cr(VI) ion at optimum conditions such as pH (5.5 – 6), type and concentration of eluent solution (5 mL of 1 mol/L HCl + 2% (m/v) ascorbic acid) and flow rate (3 mL/min) obtained was 99 ± 1% for five replicate measurements. Analytical detection and quantification limits were found as 0.11 and 0.38 µg/L, respectively. The enrichment factor of Cr(VI) ion found was about 100 after using optimization conditions. Accuracy of proposed method was checked by analyzing Cr(VI) in CWW-TM-D Wastewater (SRM) containing Cr(III) and Cr(VI) ions and applied to real waters. Langmuir adsorption model was suitable for Cr(VI) ion and maximum adsorption capacity found was 303 mg/g at 298 K. Thermodynamic parameters (ΔG°, ΔH° and ΔS°) and activation energy (Ea) were determined. Adsorption of Cr(VI) ion on resin was chemical ion-exchange, spontaneous and exothermic process
Kaynakça
- Aksu, Z., (2002). “Determination of the equilibrium, kinetic and thermodynamic parameters of the batch biosorption of nickel(II) ions onto Chlorella vulgaris”, Process Biochemistry, 38: 89 – 99,
- Aydın, F.A., Soylak, M., (2009). “Thulium hydroxide: A new coprecipitant for speciation of chromium in natural water samples”, J. Hazard. Mater., 162: 1228–1232,
- Bahadır, Z., Bulut, V.N., Hidalgo, M., Soylak, M., Margui, E., (2016). “Cr speciation in water samples by dispersive liquid-liquid micro extraction combined with total reflection X-ray fluorescence spectrometry”, Spectrochim Acta Part B, 115: 46–51
- Ball, J.W., McCleskey, R.B., (2003). “A new cation-exchance method for accurate field speciation of hexavalent chromium”, Talanta, 61: 305–313,
- Béni, A., Karosi, R., Posta, J., (2007). “Speciation of hexavalent chromium in waters by liquid-liquid extraction and GFAAS determination”, Microchem. J., 85: 103–108
- Berbar, Y., Amara, M., & Kerdjoudj, H. (2008). Anion exchange resin applied to a separation between nitrate and chloride ions in the presence of aqueous soluble polyelectrolyte. Desalination, 223(1-3), 238-242.
- Bobrowski, A., Baś, B., Dominik, J., Niewiara, E., Szalińska, E., Vignati, D., Zarębski, J., (2004). “Chromium speciation study in polluted waters using catalytic adsorptive stripping voltammetry and tangential flow filtration”, Talanta, 63: 1003–1012,
- Cavoca, S.A., Fernandes, S., Augusto, C.M., Quina, M.J., Gando-Ferreira, L.M., (2009). “Evaluation of chelating ion-exchange resins for separating Cr(III) from industrial effluents”, J. Hazard. Mater., 169: 516–523,
- Chamjangali, M.A., Goudarzi, N., Mirheidari, M., Bahramian, B. (2011). “Sequential eluent injection technique as a new approach for the on-line enrichment and speciation of Cr(III) and Cr(VI) species on a single column with FAAS detection”, J. Hazard. Mater., 192: 813–821,
- Chwastowska, J., Skwara, W., Sterlińska, E., Pszonicki, L., (2005). “Speciation of chromium in mineral waters and salinas by solid-phase extraction and graphite furnace atomic absorption spectrometry”, Talanta, 66: 1345 – 1349
- Deng, S., Wang, P., Zhang. G., Dou, Y., (2016). “Polyacrylonitrile-based fiber modified with thiosemicarbazide by microwave irradiation and its adsorption behavior for Cd(II) and Pb(II)”, J. Hazard. Mater., 307: 64–72,
- El-Shahawi, M.S., Hassan, S.S.M., Othman, A.M., El-Sonbati, M.A., (2008). “Retention profile and subsequent chemical speciation of chromium (III) and (VI) in industrial wastewater samples employing some onium cations loaded polyurethane foams”, Microchemical J. 89: 13-19,
- Esfandian, H., Ghanbari Pakdehi, S., Cattallany, M., (2020). “Development of a novel method for sodium azide removal from aqueous solution using amberlite IRA-900: batch and column adsorption studies”, Desalination and Water Treatment, 193: 381–391,
- Gu, Y., Zhu, X., (2011). “Speciation of Cr(III) and Cr(VI) ions using a β-cyclodextrin-crosslinked polymer micro-column and graphite furnace atomic absorption spectrometry”, Microchim. Acta, 173: 433 – 438
- Hasayn, S.M., Saeed, M.M., Ahmed, M., (2002). “Sorption and thermodynamic behavior of zinc(II)-thioctnate complexes onto polyurethane foam from acidic solutions. J. Radioanal. Nucl. Chem., 252(3): 477–484,
- Hashemi, P., Boroumand, J., Fat’hi, M.R., (2004). “A dual column system using agrose-based adsorbents for preconcentration and speciation of chromium in water”, Talanta, 64: 578–583,
- Hassanien, M.M., Kenawy, I.M., El-Menshawy, A.M., El-Asmy, A.A., (2008). “A novel method for speciation of Cr(III) and Cr(VI) and individual determination using Duolite C20 modified with active hydrazine”, J. Hazard. Mater., 158: 170–176
- Hosseini, M.S., Belador, F., (2009). “Cr(III)/Cr(VI) speciation determination of chromium in water samples by luminescence quenching of quercetin”, J. Hazard. Mater., 165: 1062–1067,
- Jachuła, J., Hubicki, Z. (2013). “Removal of Cr(VI) and As(V) ions from aqueous solutions by polyacrylate and polystyrene anion exchange resins”, Appl. Water Sci., 3: 653 – 664,
- Kalidhasan, S., Rajesh, N., (2009). “Simple and selective extraction process for chromium (VI) in industrial wastewater”, J. Hazard. Mater., 170: 1079–1085,
- Karthik, R., Meenakshi, S., (2015). “Synthesis, characterization and Cr(VI) uptake study of polyaniline coated chitin”, Intern. J. Biolog. Macromolec., 72: 235–242,
- Kendüzler, E., Yalçınkaya, Ö., Baytak, S., Türker, A.R., (2007). “Application of full factorial design for the preconcentration of chromium by solid phase extraction with Amberlyst 36 resin”, Microchim. Acta, 160; 389–395,
- Kiran, K., Kumar, K.S., Prasad, B., Suvardhan, K., Babu, L.R., Janardhanam, K., (2008). “Speciation determination of chromium (III) and (VI) using preconcentration cloud point extraction with flame atomic absorption spectrometry (FAAS)”, J. Hazard. Mater., 150: 582–586,
- Li, G., Zhang, A., Qi, X., Yan, G., Zhi, G., (2023). “Arsenic removal from aqueous solution by chitosan loaded with Al/Ti elements”, Sep. Sci. Technol., 58(13): 2298-2306,
- Liang, P., Shi, T., Lu, H., Jiang, Z., Hu, B., (2003). “Speciation of Cr(III) and Cr(VI) by nanometer titanium dioxide micro-column and inductively coupled plasma atomic emission spectrometry”, Spectrochim. Acta Part B, 58: 1709 – 1714
- Mariano Alegre, D.C., Dos Santos, P.M., De Oliveira, P.C., Tarley, C.R.T., Barros, W.R.P., Corazza, M.Z., (2021). “Simple and efficient method for the determination of Cr(VI) ions in water samples using m- MWCNT@APTMS through dispersive magnetic solid phase extraction”, Intern. J. Environ. Anal. Chem., 103(8), 1–19,
- Mohan, D., Pittman Jr, C.U., (2006). “Activated carbons and low cost adsorbents for remediation of tri- and hexavalent chromium from water”, J. Hazard. Mater., 137: 762–811,
- Motomizu, S., Jitmanee, K., Oshima, M., (2003). “On-line collection/concentration of trace metals for spectroscopic detection via use of small-sized thin solid phase (STSP) column resin reactors. Application to speciation of Cr(III) and Cr(VI)”, Anal. Chim. Acta, 499: 149 – 155,
- Mustapha, S., Shuaib, D.T., Ndamitso Etsuyankpa, M.M., Sumaila, M.B., (2019). “Adsorption isotherm, kinetic and thermodynamic studies for the removal of Pb(II), Cd(II), Zn(II) and Cu(II) ions from aqueous solutions using Albizia lebbeck pods”, Applied Water Science, 9(6): 142.,
- Narin, I., Kars, A., Soylak, M., (2008). “A novel solid phase extraction procedure on Amberlite XAD-1180 for speciation of Cr(III), Cr(VI) and total chromium in environmental and pharmaceutical samples”, J. Hazard. Mater., 150: 453-458,
- Pomeroy, S. L., Tamayo, P., Gaasenbeek, M., Sturla, L. M., Angelo, M. (2002).,“Prediction of central nervous system embryonal tumor outcome based on gene expression”, Letter to Nature, 436-442,
- Sadeghi, S., Moghaddam, A.Z., (2016). “Multiple response optimization of sequential speciation of chromium in water samples by in situ solvent formation dispersive liquid–liquid microextraction prior to electrothermal atomic absorption spectrometry determination”, J. Iranian Chem. Soc., 13: 117–130
- Sahayam, A.C., (2002). “Speciation of Cr(III) and Cr(VI) in potable water by using activated neutral alumina as collector and ET-AAS for determination”, Anal. Bioanal. Chem., 372: 840–842
- Sarı, A., Tüzen, M., (2009). “Kinetic and equilibrium studies of biosorption of Pb(II) and Cd(II) from aqueous solution by macrofungus (Amanita rubescens) biomass”, J. Hazard. Mater., 164: 1004–1011,
- Sumida, T., Ikenoue, T., Hamada, K., Sabarudin, A., Oshima, M., Motomizu, S., (2005). “On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry”, Talanta, 68: 388 – 393
- Tan, L.C., Calix, E.M., Rene, E.R., Nancharaiah, Y.V., Van Hullebusch, E.D., Lens, P.N.L., (2018). “Amberlite IRA-900 Ion Exchange Resin for the Sorption of Selenate and Sulfate: Equilibrium, Kinetic, and Regeneration Studies”, J. Environ. Eng., 144(11): 04018110
- Tunçeli, A., Türker, A.R., (2002). “Speciation of Cr(III) and Cr(VI) in water after preconcentration of its 1,5-diphenylcarbazone complex on amberlite XAD-16 resin and determination by FAAS”, Talanta, 57: 1199–1204,
- Tunçeli, A., Ulaş, A., Acar, O., Türker, A.R., (2022). “Adsorption isotherms, kinetic and thermodynamic studies on cadmium and lead ions from water solutions using Amberlyst 15 resin”, Turk J. Chem., 46: 193-205,
- Tunçeli, A., Yalçınkaya, Ö., Türker, A.R., (2013). “Solid phase extraction of Pb(II) in water samples on Amberlite 36 and determination of the equilibrium, kinetic and thermodynamic parameters of the adsorption. Curr. Anal. Chem., 9(3): 513-521,
- Türker, A.R., (2007). “New Sorbents for Solid-Phase Extraction for Metal Enrichment”, Clean-Soil Air Water, 35: 548 -557,
- Tüzen, M., Soylak, M., (2007). “Multiwalled carbon nanotubes for speciation of chromium in environmental samples”, J. Hazard. Mater., 147: 219–225,
Uluozlu, O.D., Tüzen, M., Soylak, M., (2009). “Speciation and separation of Cr(VI) and Cr(III) using coprecipitation with Ni2+/2-Nitroso-1-naphthol-4-sulfonic acid and determination by FAAS in water and food samples”, Food Chem. Toxicol., 47: 2601–2605,
- Wang, F., Lu, X., Yan, L.-X., (2016). “Selective removals of heavy metals (Pb2+, Cu2+, and Cd2+) from wastewater by gelation with alginate for effective metal recovery”, J. Hazard. Mater., 308: 75–83,
- Wang, L.L., Wang, J.Q., Zheng, Z.X., Xiao, P., (2010). “Cloud point extraction combined with high-performance liquid chromatography for speciation of chromium(III) and chromium(VI) in environmental sediment samples”, J. Hazard. Mater., 177: 114 – 118,
- WHO (World Health Organization) (1984). “Guidelines for Drinking Water Quality: Health Criteria and Supporting Information”, World Health Organization, Vol. II Geneva, Switzerland
- Xiong, C., Wang, W., Tan, F., Luo, F., Chen, J., (2015). “Investigation on the efficiency and mechanism of Cd(II) and Pb(II) removal from aqueous solutions using MgO nanoparticles”, J. Hazard. Mater., 299: 664–674.
- Yalçin, S., Apak, R., (2004). “Chromium (III, VI) speciation analysis with preconcentration on a maleic acid-functionalized XAD sorbent”, Anal. Chim. Acta, 505: 25-35
- Yang, N., Li, J., Wang, J., (2007). “Field speciation of chromium with a sequential injection lab-on-valve incorporating a bismuthate immobilized micro-column”, Talanta, 72: 1710–1716
- Zarghami, Z., Akbari, A., Latifi, A.M., Amani, M.A., (2016). “Design of a new integrated chitosan-PAMAM dendrimer biosorbent for heavy metals removing and study of its adsorption kinetics and thermodynamics”, Bioresour. Technol. 205: 230–238,