TABLE 2.

Concentration, δ15N, δ18O, and site preference of N2O produced during ammonia oxidation by cultures of Nitrosomonas europaea for four independent experiments

N2O concn (μM)δ15N-N2O (‰)δ18O-N2O (‰)Site preference (‰)
2.4−46.622.236.8
1.8−46.922.627.5
3.4−46.224.928.6
3.7−46.124.432.8
    Avg−46.523.531.4
    SD0.41.34.2