Novel mobile phase for separation of Cr6+ from Cr3+ and associated heavy metal cations by high-performance thin-layer chromatography

• Autorzy: Mohammad A. , Sirwal Y. H.
• Języki publikacji: EN

Abstrakty

EN

Eleven heavy metal cations have been chromatographed on silica gel high-performance thin-layer chromatography plates with pure organic, mixed organic, and mixed aqueous-organic mobile phases. Mobile phases such as methanol-dimethylamine, 8:2 (v/v), and methanol-dimethylamine -formic acid, 8:8:2 (v/v), were found most suitable for rapid separation and identification of mixtures of Cr6+ and Cr3+ and of Cr6+, Ni2+, and Co2+, respectively. The effect of impurities such as inorganic ions, phenols, and surfactants on the separation of Cr6+ and Cr3+ was examined. Mutual separation of Cr6+, Ni2+, and Co2+ was investigated at different sample solution pH. The limit of detection for Ni2+, Co2+, Cu2+, and Pb2+ on HPTLC plates was evaluated and semiquantitative determination of Cr6+ and Ni2+ by spot-area measurement was attempted. The proposed method was successfully used for identification of Cr6+, Cr3+, Ni2+, and Co2+ and for mutual separation of Cr6+ from Cr3+ and of Cr6+ from Ni2+ and Co2+ from a variety of industrial wastewater samples.

• Wydawca: University of Silesia in Katowice ; Akademiai Kiado
• Czasopismo: Acta Chromatographica
• Rocznik: 2003
• Tom: No. 13
• Strony: 117--134
• Opis fizyczny: Bibliogr. 51 poz., rys., tab.

Twórcy

autor

Mohammad A.

• Analytical Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh-202002, India

autor

Sirwal Y. H.

• Analytical Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh-202002, India

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