Transport of Europium Colloids in Vadose Zone Lysimeters at the Semiarid Hanford Site

The objective of this study was to quantify transport of Eu colloids in the vadose zone at the semiarid Hanford site. Eu-hydroxy-carbonate colloids, Eu(OH)(CO3), were applied to the surface of field lysimeters, and migration of the colloids through the sediments was monitored using wick samplers. Th...

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Veröffentlicht in:	Environmental science & technology 2013-03, Vol.47 (5), p.2153-2160
Hauptverfasser:	Liu, Ziru, Flury, Markus, Zhang, Z. Fred, Harsh, James B, Gee, Glendon W, Strickland, Chris E, Clayton, Ray E
Format:	Artikel
Sprache:	eng
Schlagworte:	60 APPLIED LIFE SCIENCES Applied sciences Arid zones Biological and physicochemical properties of pollutants. Interaction in the soil Chemical precipitation Colloids - chemistry Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Environmental Monitoring europium Europium - chemistry Evapotranspiration Exact sciences and technology Geologic Sediments - analysis Geologic Sediments - chemistry Measuring instruments mobilization Pollution Pollution, environment geology Rain Sediment transport Sediments Soil and sediments pollution Solution chemistry Washington Water Movements Water Pollutants, Chemical - chemistry wick sampler
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Zusammenfassung:	The objective of this study was to quantify transport of Eu colloids in the vadose zone at the semiarid Hanford site. Eu-hydroxy-carbonate colloids, Eu(OH)(CO3), were applied to the surface of field lysimeters, and migration of the colloids through the sediments was monitored using wick samplers. The lysimeters were exposed to natural precipitation (145–231 mm/year) or artificial irrigation (124–348 mm/year). Wick outflow was analyzed for Eu concentrations, supplemented by electron microscopy and energy-dispersive X-ray analysis. Small amounts of Eu colloids (
ISSN:	0013-936X 1520-5851
DOI:	10.1021/es304383d