Fig. 4: Ammonium breakthrough curves in soil columns. | npj Clean Water

Fig. 4: Ammonium breakthrough curves in soil columns.

From: Real-time detection of ammonium in soil pore water

Fig. 4

a, c Breakthrough curves of ammonium in the sandy loam soil (SL) and SL mixed with 10% compost (SLM) columns, respectively, obtained from the optical technique and standard laboratory procedure. b, d Daily WC fluctuations in both columns. e Regression plot of the optical vs. laboratory measurements.

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