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Table 4 Statistical values of the moss reference materials M2 and M3

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

  M2 M2a RR (%) M3 M3a RR (%)
Reference MV ± SD RSD (%) Reference MV ± SD RSD (%)
Cd 0.454 ± 0.019 0.44 ± 0.01 1.8 97.2 0.106 ± 0.005 0.101 ± 0.01 5.6 95.6
Cr 0.97 ± 0.17 0.89 ± 0.07 7.6 92.2 0.67 ± 0.19 0.58 ± 0.06 11.3 86.0
Pb 6.37 ± 0.43 6.54 ± 0.2 3.6 102.6 3.33 ± 0.25 3.41 ± 0.09 2.7 102.3
Hg 0.058 ± 0.005 0.057 ± 0.001 1.8 99.0 0.035 ± 0.004 0.037 ± 0.006 16.0 105.7
  1. MV ± SD mean value ± standard deviation (in mg/L, µg/L for Hg), RSD relative standard deviation, RR recovery rate, related to the reference
  2. aMeasurements