《Table 2–Temporal evolution of N-NO3-, N-NH4+and S-SO42-concentrations throughout incubation experim

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《Phosphorus mobility in dam reservoir affected by redox oscillations:An experimental study》

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The amount of NO3-decreased quickly from 50.0±0.7μmol/L（on Day 0）to a value under the LQ by Day 4（Table 2）.During Ae-2，NO3-rose to 43μmol/L before quickly decreasing to 7±6μmol/L after the first day of the An-2 period.The NH4+concentration oscillated around 158±81 and 170±8μmol/L during Ae-1 and Ae-2，respectively.An increase in ammonium content was observed during anaerobic phases:from 121±36 to 643μmol/L during An-1，and from 186±29 to 607±50μmol/L during An-2（Table 2）.The sulfate concentration declined from 327±12 to193±19μmol/L during Ae-1 and to below the LQ at the end of An-1.During Ae-2，the sulfate concentration climbed to 31±3μmol/L and then decreased below the LQ by the end of An-2.