Comparison of methods for sampling suspended matter in rivers : application to measurement of particulate metals
- This study aims at comparing several methods of sampling suspended matter to measure particulate metals (centrifuging, sequential sampling and filtration, cartridge filtration, immersed traps, emerged decanter). Two field experiments were undertaken downstream of the Nogent/Seine nuclear power pla...
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Veröffentlicht in: | Hydroecologie appliquee 1999-01, Vol.11 (1-2), p.71-102 |
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Format: | Artikel |
Sprache: | fre |
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Zusammenfassung: | - This study aims at comparing several methods of sampling suspended matter to measure particulate metals (centrifuging, sequential sampling and filtration, cartridge filtration, immersed traps, emerged decanter). Two field experiments were undertaken downstream of the Nogent/Seine nuclear power plant, during a flood period and a dry summer period. The methods examined were compared on the basis of several criteria :total particulate metal concentrations (CU, Zn, Fe, Mn), granulometric spectra of several samples, bio-geochemical speciation of particulate metals.Original Abstract: Le but de l'etude decrite dans le present article est de comparer plusieurs methodes de prelevement de matieres en suspension (centrifugation, prelevement sequentiel d'eau et filtration, filtration sur cartouches, trappes immergees, decanteur emerge (dit MIM), afin d'evaluer la representativite de l'echantillonnage et la faisabilite des techniques testees pour l'evaluation des concentrations en micropolluants metalliques particulaires. A cette fin, deux campagnes d'intercomparaison ont ete organisees en aval de la centrale nucleaire de Nogent/Seine, au cours de deux periodes hydrologiques contrastees. La representativite des diverses techniques mises en jeu a ete testee par le suivi de la concentration totale en divers metaux traces (Cu, Zn, Fe, Mn), par la mesure des spectres granulometriques des echantillons recueillis et par l'evaluation de la speciation biogeochimique des metaux particulaires. |
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ISSN: | 1147-9213 |