Flow Cytometry for Observing the Distribution of Adsorption Sites on Particles

Flow cytometry was found to be useful for describing the distribution of adsorption sites for yellow substance on mineral particles. Fewer than 0.1% of the particles measured in clay samples adsorbed enough fluorescing sorbate at $80 mg liter^-1$ to be detected with 150 mW of UV excitation energy. A...

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Veröffentlicht in:	Limnology and oceanography 1989-07, Vol.34 (5), p.947-952
Hauptverfasser:	Baier, Rodger W., Cucci, Terry L., Yentsch, Clarice M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Adsorption Coastal water Cytometry Dissolved organic matter Earth sciences Earth, ocean, space Exact sciences and technology Fluorescence Geochemistry Geochemistry: general, methodology, regional studies Lasers Marine Minerals Oceans Particle energy Sea water
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Zusammenfassung:	Flow cytometry was found to be useful for describing the distribution of adsorption sites for yellow substance on mineral particles. Fewer than 0.1% of the particles measured in clay samples adsorbed enough fluorescing sorbate at $80 mg liter^-1$ to be detected with 150 mW of UV excitation energy. All of the particles would have been observed if the coverage had been uniform. Gravimetric measurements made on subsamples showed that clay componenet adsorb up to 2% of their weight of carbon as organic compounds and could provide a significant sink for the fluorescent products of decomposed vegetation.
ISSN:	0024-3590 1939-5590
DOI:	10.4319/lo.1989.34.5.0947