Spatial patterns and temporal trends of heavy metal concentrations in moss and surface soil specimens collected in Norway between 1990 and 2010

Environmental Sciences Europe

Table 1 Descriptive statistical measures for Cd, Hg and Pb concentrations in moss and in soil

Element	Year	Number	Median	Minimum	Maximum
Cd (μg/g) moss	1990	495	0.126	0.026	3.373
	1995	458	0.128	0.004	1.672
	2000	464	0.087	0.002	2.622
	2005	464	0.089	0.017	2.453
	2010	463	0.081	0.009	1.875
Hg (μg/g) moss	1990	151	0.068	0.014	0.817
	1995	209	0.068	0.002	0.479
	2000	464	0.052	0.022	0.208
	2005	464	0.054	0.019	0.250
	2010	460	0.064	0.025	0.445
Pb (μg/g) moss	1990	495	9.3	1.5	78.9
	1995	458	5.8	0.9	59.4
	2000	464	2.7	0.5	27.7
	2005	464	2.2	0.5	34.3
	2010	463	1.5	0.3	20.8
Cd (μg/g) soil	1995	461	0.45	0.05	6.66
Cd (μg/g) soil	2005	462	0.40	0.05	5.72
Hg (μg/g) soil	1995	No data
Hg (μg/g) soil	2005	462	0.20	0.03	8.86
Pb (μg/g) soil	1995	461	34.56	7.05	798.79
Pb (μg/g) soil	2005	462	25.75	3.80	1259.80

The descriptive statistical measures for Cd, Hg and Pb concentrations in moss are from 1990 to 2010 and in soil from 1995 and 2005.