REFERENCES
- Ali , I. , and H. Y. Aboul-Enein . 2002 . Speciation of arsenic and chromium metal ions by reversed phase high performance liquid chromatography . Chemosphere 48 : 275 – 278 .
- Armienta , M. A. , R. Rodrlguez , N. Ceniceros , F. Jufirez , and O. Cruz . 1996 . Distribution, origin, and fate of chromium in soils in Guanajuato, Mexico . Environ. Pollut. 91 : 391 – 397 .
- Bolan , N. S. , D. C. Adriano , R. Natesan , and B.-J. Koo . 2003 . Effects of organic amendments on the reduction and phytoavailability of chromate in mineral soil . J. Environ. Qual. 32 : 120 – 128 .
- Chen , Z. L. , M. Megharaj , and R. Naidu . 2007 . Speciation of chromium in waste water using ion chromatography inductively coupled plasma mass spectrometry . Talanta 72 : 394 – 400 .
- Chwastowska , J. , W. Skwara , E. Sterlińska , and L. Pszonicki . 2005 . Speciation of chromium in mineral waters and salinas by solid-phase extraction and graphite furnace atomic absorption spectrometry . Talanta 66 : 1345 – 1349 .
- Kaya , G. , and M. Yaman . 2008. Online preconcentration for the determination of lead, cadmium, and copper by slotted tube atom trap (STAT)-flame atomic absorption spectrometry Talanta 75: 1127–1133.
- Kiran , K. , K. S. Kumar , B. Prasad , K. Suvardhan , R. B. Lekkala , and K. Janardhanam . 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 .
- Krishna , P. G. , J. M. Gladis , U. Rambabu , T. Prasada Rao , and G. R. K. Naidu 2004 . Preconcentrative separation of chromium(VI) species from chromium(III) by coprecipitation of its ethyl xanthate complex onto naphthalene . Talanta 63 : 541 – 546 .
- Lee , D. Y. , J. C. Huang , K. W. Juang , and L. Tsui . 2005 . Assessment of phytotoxicity of chromium in flooded soils using embedded selective ion exchange resin method . Plant Soil 277 : 97 – 105 .
- Liu , Y. H. , X. Y. Wei , X. M. Wang , and J. J. Gao . 2000 . A study on the adsorption of chromium in soil and the form extraction . J. Agr. Univ. Heibei 23 : 16 – 20 .
- Liu , W. , W. J. Zhao , J. B. Chen , and M. M. Yang . 2007 . A cloud point extraction approach using Triton X-100 for the separation and preconcentration of Sudan dyes in chilli powder . Anal. Chim. Acta 605 : 41 – 45 .
- Martinez-Bravo , Y. , A. F. Roig-Navarro , F. J. López , and F. Hernández . 2001 . Multielemental determination of arsenic, selenium and chromium(VI) species in water by high-performance liquid chromatography–inductively coupled plasma mass spectrometry . J. Chromatogr. A 926 : 265 – 270 .
- Maranhão , T. D. A. , D. L.G. Borges , M. A. M. S. da Veiga , and A. J. Curtius . 2005 . Cloud point extraction for the determination of cadmium and lead in biological samples by graphite furnace atomic absorption spectrometry . Spectrochim. Acta B 60 : 667 – 672 .
- Marqúes , M. J. , A. Salvador , A. Morales-Rubio , and M. Guardia . 2000 . Chromium speciation in liquid matrices: A survey of the literature . Fresen. J. Anal. Chem. 367 : 601 – 613 .
- Matusiewicz , H. 1997 . Atom trapping and in situ preconcentration techniques for flame atomic absorption spectrometry . Spectrochim. Acta B 52 : 1711 – 1736 .
- Priego-Capote , F. , and M. D. Luque de Castro . 2003 . Speciation of chromium by in-capillary derivatization and electrophoretically mediated microanalysis . J. Chromatogr. A 1113 : 244 – 250 .
- Santalad , A. , S. Srijaranai , R. Burakham , T. Sakai , and R. L. Deming . 2008 . Acid-induced cloud-point extraction coupled to spectrophotometry for the determination of carbaryl residues in waters and vegetables . Microchem. J. 90 : 50 – 55 .
- Saygi , K. O. , M. Tuzen , M. Soylak , and L. Elci . 2008 . Chromium speciation by solid phase extraction on Dowex M 4195 chelating resin and determination by atomic absorption spectrometry . J. Hazard. Mater. 153 : 1009 – 1014 .
- Senkal , B. F. , M. Ince , E. Yavuz , and M. Yaman . 2007 . The synthesis of new polymeric sorbent and its application in preconcentration of cadmium and lead in water samples . Talanta 72 : 962 – 967 .
- Shen , M. , R. Guo , Z. Liu , and T. Liu . 1996 . The effect of organic acids on the cloud points of Triton X-100 . Chem. J. Chin. Univ. 17 : 1603 – 1607 .
- Wang , J. , K. Ashley , D. Marlow , E. C. England , and G. Carlton . 1999. Field method for the determination of hexavalent chromium by ultrasonication and strong anion-exchange solid-phase extraction. Anal. Chem. 71: 1027–1032.
- Wang , L. , B. Hu , Z. Jiang , and Z. Li . 2002 . Speciation of Cr(III) and Cr(VI) in aqueous samples by coprecipitation/slurry sampling fluorination assisted graphite furnace atomic absorption spectrometry . Int. J. Environ. Anal. Chem. 82 : 387 – 393 .
- Yaman , M. 2005 . The improvement of sensitivity in lead and cadmium determinations using flame atomic absorption spectrometry . Anal. Biochem. 339 : 1 – 8 .
- Yang , W. P. , Z. J. Zhang , and W. Deng . 2003 . Speciation of chromium by in-capillary reaction and capillary electrophoresis with chemiluminescence detection . J. Chromatogr. A 1014 : 203 – 214 .
- Zhu , X. S. , B. Hu , Z. C. Jiang , and M. F. Li . 2005 . Cloud point extraction for speciation of chromium in water samples by electrothermal atomic absorption spectrometry . Water Res. 39 : 589 – 595 .