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A Modified Vadose Zone Fluxmeter with Solution Collection Capability

Pacific Northwest National Laboratory, 3200 Q Ave., Richland, WA 99352

View larger version (81K): [in a new window]   Fig. 1. Schematic of a modified vadose zone water fluxmeter with a solution collector.

View larger version (64K): [in a new window]   Fig. 2. Schematic of the modified water fluxmeter and experimental setup (not to scale).

View larger version (21K): [in a new window]   Fig. 3. Nitrate breakthrough curves measured by the modified water fluxmeter in (a) coarse sand and (b) fine sand.

View larger version (20K): [in a new window]   Fig. 4. Nitrate flux in the coarse and fine sands.

View larger version (24K): [in a new window]   Fig. 5. Drainage recovery efficiency (DRE) of the water fluxmeters in the coarse and fine sands.