Fig. 3. Observed (discrete points) N₂H⁺₅ and Ca²⁺ breakthrough curves (BTCs) in effluent from an Arredondo E1 soil column injected with a pulse of high hydrazinium concentration (15.00 mol_c m^-3). Simulated BTCs with (smooth lines) and without (broken lines) chemisorption of exchange-phase N₂H⁺₅ are given.

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