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Table 2 Statistical values for determination of nitrogen in reference materials during the measurement period

From: Spatial structures of heavy metals and nitrogen accumulation in moss specimens sampled between 1990 and 2015 throughout Germany

  References Measurements RR (%)
MV ± SD MV ± SD RSD (%)
Carbamide 46.62 ± 2.33 47.05 ± 0.81 1.7 100.9
Glutamic acid 9.52 ± 0.95 9.58 ± 0.18 1.9 100.7
TBK6 0.156 ± 0.01 0.16 ± 0.01 5.8 103.5
  1. MV ± SD mean value ± standard deviation (in mg/kg), RSD relative standard deviation, RR recovery rate, related to the reference, TBK6 Kinesin-like polypeptides 6