REFERENCES
- Karosi , R. ; Andruch , V. ; Posta , J. ; Balogh , J. ( 2006 ) Separation of chromium (VI) using complexation and its determination with GFAAS . Microchem. J. , 82 ( 1 ): 61 .
- Hu , J. ; Chen , G. ; Lo , I.M.C. ( 2005 ) Removal and recovery of Cr(VI) from wastewater by maghemite nanoparticles . Water Res. , 39 ( 18 ): 4528 .
- Zhu , X. ; Hu , B. ; Jiang , Z. ; Li , M. ( 2005 ) Cloud point extraction for speciation of chromium in water samples by electrothermal atomic absorbtion spectrometry . Water Res. , 39 ( 4 ): 589 .
- Zaroual , Z. ; Chaair , H. ; Essadki , A.H. ; El Ass , K. ; Azzi , M. ( 2009 ) Optimizing the removal of trivalent chromium by electrocoagulation using experimental design . Chem. Eng. J. , 148 ( 2–3 ): 488 .
- Sedumedi , N.N. ; Mandiwana , K.L. ; Ngobeni , P. ; Panichev , N. ( 2009 ) Speciation of Cr(VI) in environmental samples in the vicinity of the ferrochrome smelter . J. Hazard. Mater. , 172 ( 2–3 ): 1686 .
- Monasterio , R.P. ; Altamirano , J.C. ; Martinez , L.D. ; Wuilloud , R.G. ( 2009 ) A novel fiber-packed column for on-line preconcentration and speciation analysis of chromium in drinking water with flame atomic absorption spectroscopy . Talanta , 77 ( 4 ): 1290 .
- Kumbasar , R.A. ( 2010 ) Studies on extraction of chromium (VI) from acidic solutions containing various metal ions by emulsion liquid membrane using Alamine 336 as extractant . J. Hazard. Mater. , 178 ( 1–3 ): 875 .
- Liu , J. ; Zhang , W. ; Ren , Z. , Ma , J. ( 2009 ) The separation and concentration of Cr(VI) from acidic dilute solution using hollow fiber renewal liquid membrane . Ind. Eng. Chem. Res. , 48 ( 9 ): 4500 .
- He , Q. ; Chang , X. ; Zheng , H. ; Jiang , N. ; Wang , X. ( 2008 ) Determination of chromium (III) and total chromium in natural waters using a surface ion-imprinted silica gel as selective adsorbent . Int. J. Environ. Anal. Chem. , 88 ( 6 ): 373 .
- Hagendorfer , H. ; Goessler , W. ( 2008 ) Separation of chromium (III) and chromium (VI) by ion chromatography and an inductively coupled plasma mass spectrometer as element-selective detector . Talanta , 76 ( 3 ): 656 .
- Hosseini , M.S. ; Bandegharaei , A.H. ; Raisi , H. ; Belador , F. ( 2009 ) Sorption of Cr(VI) by Amberlite XAD-7 resin impregnated with brilliant gren and its determination by quercetin as a selective spectrophotometric reagent . J. Hazard. Mater. , 169 ( 1–3 ): 52 .
- Sahu , S.K. ; Meshram , P. ; Pandey , B.D. ; Kumar , V. ; Mankhand , T.R. ( 2009 ) Removal of chromium (III) by cation exchange resin, Indion 790 for tannery waste treatment . Hydrometallurgy , 99 ( 3–4 ): 170 .
- Li , H. ; Li , Z. ; Liu , T. ; Xiao , X. ; Peng , Z. ; Deng , L. ( 2008 ) A novel technology for biosorption and recovery hexavalent chromium in wastewater by bio-functional magnetic beads . Bioresour. Technol. , 99 ( 14 ): 6271 .
- Martendal , E. ; Maltez , H.F. ; Carasek , E. ( 2009 ) Speciation of Cr(III) and Cr(VI) in environmental samples determined by selective separation and preconcentration on silica gel chemically modified with niobium (V) oxide . J. Hazard. Mater. , 161 ( 1 ): 450 .
- 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 ( 1–3 ): 1062 .
- Sun , Z. ; Liang , P. ( 2008 ) Determination of Cr(III) and total chromium in water samples by cloud point extraction and flame atomic absorption spectrometry . Microchim. Acta , 162 ( 1–2 ): 121 .
- Hassanien , M.M. ; Kenawy , I.M. ; Menshawy , A.M.E. ; Asmy , A.A.E. ( 2008 ) A novel method for speciation of Cr(III) and Cr(VI) and individual determination using Duolite C20 modified with active hydrazone . J. Hazard. Mater. , 158 ( 1 ): 170 .
- Lam , K.F. ; Yeung , K.L. ; Mckay , G. (2007) Selective mesoporous adsorbents for and Cu2+ separation. Microporous Mesoporous Mater. , 100 (1–3): 191.
- Ozay , O. ; Ekici , S. ; Baran , Y. ; Aktas , N. ; Sahiner , N. ( 2009 ) Removal of toxic metal ions with magnetic hydrogels . Water Res. , 43 ( 17 ): 4403 .
- Ozay , O. ; Ekici , S. ; Baran , Y. ; Kubilay , S. ; Aktas , N. ; Sahiner , N. ( 2010 ) Utilization of magnetic hydrogels in the separation of toxic metal ions from aqueous environments . Desalination , 260 ( 1–3 ): 57 .
- Sahiner , N. ; Singh , M. ( 2007 ) In situ micro/nano-hydrogel synthesis from acrylamide derivates with lecithin organogel system . Polymer , 48 ( 10 ): 2827 .
- Barakat , M.A. ; Sahiner , N. ( 2008 ) Cationic hydrogels for toxic arsenate removal from aqueous environment . J. Environ. Manage. , 88 ( 4 ): 955 .
- Sahiner , N. ( 2006 ) In situ metal particle preparation in cross-linked poly (2-acrylamido-2-methyl-1-propansulfonic acid) hydrogel networks . Colloid Polym. Sci. , 285 ( 3 ): 283 .
- Pekel , N. ; Sahiner , N. ; Guven , O. ( 2001 ) Use of amidoximated acrylonitrile/N-vinyl-2- pyrrolidone interpenetrating polymer network for uranyl ion adsorption from aqueous systems . J. Appl. Polym. Sci. , 81 ( 10 ): 2324 .
- Saraydın , D. ; Isıkver , Y. ; Sahiner , N. ( 2001 ) Uranyl ion binding properties of poly(hydroxamic acid) hydrogels . Polym. Bull. , 47 ( 1 ): 81 .
- Kundakci , S. ; Üzüm , Ö.B. ; Karadağ , E. ( 2009 ) Behaviors of chemically crosslinked CAAMPS hydrogels in uptake of uranyl ions from aqueous solutions . Polym.-Plast. Technol. Eng. , 48 ( 1 ): 69 .
- Dadhaniya , P.V. ; Patel , A.M. ; Patel , M.P. ; Patel , R.G. ( 2009 ) A new cationic poly[1-vinyl-3-ethyl imidazolium iodide], p(VEII) hydrogel for the effective removal of chromium (VI) from aqueous solution . J. Macromol. Sci., Part A: Pure Appl. Chem. , 46 ( 4 ): 447 .
- Langmuir , I. ( 1918 ) The adsorption of gases on plane surfaces of glass, mica and platinum . J. Am. Chem. Soc. , 40 ( 9 ): 1361 .
- Freundlich , H.M.F. ( 1906 ) Over the adsorption in solution . Z. Phys. Chem. , 57 : 385 .