Environmental Sciences Europe

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 (%)	RR (%)
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

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

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