Selective desorption and analysis of humic substances on suspended particles in river water |
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| Authors: | Masataka Hiraide Yoshio Arima Atsushi Mizuike |
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| Affiliation: | (1) Faculty of Engineering, Nagoya University, Chikusa-ku, 464 Nagoya, Japan |
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| Abstract: | The elemental analysis and morphology of individual particles indicate that the dominant suspended particles in river water are kaolin covered with hydrated iron(III) oxide which strongly sorbs humic substances. Suspended particles, about 1 mg, collected from 250 ml of water by centrifugation, are treated with 0.7 ml of 0.1M sodium hydroxide to desorb humic substances. Approximately 60% of copper and 30% of lead on or in suspended particles exist as humic complexes. |
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| Keywords: | suspended particles humic substances heavy metals river water selective desorption |
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