HPLC determination of collectors used for the flotation of heavy metal minerals |
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| Authors: | Chunshan Zhou Xingan Xiong Mingjian Wu G Schwedt |
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| Institution: | Institute of New Technology Chemistry and Chemical Engineering, Central South University of Technology, 410083 Changsha, China, CN
Institut für Anorganische und Analytische Chemie, Technische Universit?t Clausthal, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld, Germany, DE
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| Abstract: | A reversed-phase HPLC-method for the separation of mixtures of collectors for the flotation of heavy metal minerals is described.
It is based on a Nucleosil 5C18 column, isocratic elution and UV-detection at 238 nm. The mobile phase is methanol-water-5%
phosphoric acid (40:60:4, v/v). The method is applied to the determination of six collectors in aqueous solutions from flotation
processes. The relative standard deviations are 1.6–3.2% in the concentration range 2–10 mg/L. The detection limits are 1 μg/L
for 8-hydroxyquinoline, dimethylglyoxime and salicylic acid, 2 μg/L for salicylhydroxamic acid and 5 μg/L for benzenetriazol
and salicylaldoxime, respectively.
Received: 19 April 1996/Revised: 14 August 1996/Accepted: 23 August 1996 |
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