Dual-continuum analysis of a cadmium tracer field experiment

作者：Vogel Tomas^*; Lichner Lubomir; Dusek Jaromir; Cipakova Andrea

来源：Journal of Contaminant Hydrology, 2007, 92(1-2): 50-65.

DOI：10.1016/j.jconhyd.2007.01.001

• batch test
• cadmium
• distribution coefficient
• dual-continuum system
• macropores
• particle-facilitated transport
• preferential flow
• radioactive tracer
• sorption
• vadose zone

Cadmium penetration into a sandy-loam soil during the field poncled infiltration at Kralovska luka site in Southern Slovakia was observed in a controlled experiment. Adsorption of cadmium was examined using the radioactive tracer techniques in laboratory batch tests. Quite deep (115m)Cd penetration during the field experiment (65 cm beneath the soil surface) gives evidence of the particle-facilitated transport of cadmium through preferential pathways. More than 40% of the applied cadmium moved deeper than 10 cm. The field experiment was analyzed using both conventional single-continuum approach (based on Richards' equation for water flow and advection-clispersion equation for Cd transport) and dual-continuum approach. The latter approach allowed us to simulate more adequately the observed movement of cadmium.

• 出版日期2007-6-16