Nature of nickel complexes in Psychotria douarrei and other nickel-accumulating plants |
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| Authors: | William J. Kersten Robert R. Brooks Roger D. Reeves Anguy Jaffré |
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| Affiliation: | 1. Department of Chemistry, Biochemistry and Biophysics, Massey University, Palmerston North, New Zealand;2. O.R.S.T.O.M., Abidjan, Ivory Coast |
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| Abstract: | The nature of nickel complexes in various Ni accumulating plant species, mainly from New Caledonia, was investigated by techniques including gel chromatography, ion-exchange chromatography, high performance liquid chromatography, and a combination of gas-liquid chromatography and mass spectrometry. Psychotria douarrei contained Ni complexed mainly (63%) as a negatively-charged malate complex balanced by a cationic aquo complex. Phyllanthus serpentinus had anionic Ni bound as 42% citrate and 4O% malate. All other species studied, contained Ni as an anionic citrate complex. |
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| Keywords: | nickel accumulation: nickel citrate complexes: nickel-malate complexes. |
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