Artículos de revistas
Liquid chromatographic separation of aqueous species of Cr(VI) and Cr(III)
Registro en:
Journal Of Chromatography A. Elsevier Science Bv, v. 789, n. 41671, n. 469, n. 478, 1997.
0021-9673
WOS:000070924700043
10.1016/S0021-9673(97)00676-6
Autor
Collins, CH
Pezzin, SH
Rivera, JFL
Bonato, PS
Windmoller, CC
Archundia, C
Collins, KE
Institución
Resumen
Although chromium can be present in aqueous solutions as Cr(VI) or as any of various kinetically stable forms of Cr(III), whose distribution depends on the chemical history of the aqueous sample, most chromium speciation procedures in the literature consider only Cr(VI) and Cr(III) (as the hexaaquo species). The present paper gives examples of characterizations involving Cr(VI) and several typical forms of Cr(III) using a cation-HPLC separation scheme with spectrophotometric or radiometric detection. These results are compared with those obtained with open column cation-exchange chromatography using radiometric detection. (C) 1997 Elsevier Science B.V. 789 41671 469 478