Registration Dossier

Environmental fate & pathways

Monitoring data

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Administrative data

Endpoint:
monitoring data
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
retrieval date: 2016-05-09
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
The European Geochemical Mapping of Agricultural and Grazing Land Soil (GEMAS) project provides high-quality data of ambient metal concentrations in agricultural and grazing land soil. Samples from 33 out of 38 European countries were analysed to develop a harmonised geochemical database for soils.
Cross-reference
Reason / purpose:
reference to same study

Data source

Referenceopen allclose all

Reference Type:
other: GEMAS database
Title:
Chemistry of Europe’s agricultural soils - Part A: Methodology and interpretation of the GEMAS data set.
Author:
Reimann et al.
Year:
2014
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
The European Geochemical Mapping of Agricultural and Grazing Land Soil (GEMAS) project measured ambient metal concentrations in agricultural and grazing land soils and analysed samples from 33 out of 38 European countries to develop a suitable harmonised geochemical database for soils. Measured concentrations were statistically analysed for EU countries plus Norway.
GLP compliance:
no
Type of measurement:
other: ambient concentration
Media:
soil

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
other: total strontium in soil
Details on test material:
- Name of test material (as cited in study report): Strontium

Study design

Details on sampling:
Sampling:
The GEMAS project area of 5,600,000 km2 was divided into a grid with 50 km x 50 km cells. Samples for agricultural and grazing land soil were collected across Europe to develop a suitable harmonised geochemical database for soils. Within each 2500 km² cell, the collection site was freely selectable to collect the 'most representative' sample.

Agricultural land soil samples:
The minimum size of the plot was set to 25x50m for a regularly ploughed agricultural field (arable land). The ploughing soil layer (Ap-horizon) of agricultural land was collected at a depth of 0 - 20 cm.

Grazing land soil samples:
A sizeable plot of grazing land, which is not regualary ploughed. If no grazing land was available within the cell, any plot with undisturbed permanent grass cover was sampled. The topmost part soil on grazing land was collected at a depth of 0 – 10 cm.



Results and discussion

Any other information on results incl. tables

Table 1: Agricultural soil concentrations

Parameter

Unit

Method

#

Min

Max

Mean

STD

50p

90p

CEC

meq/100g

AAS

2,108*1

1,867*2

1.80

48.30

17.93

17.25

8.77

8.44

16.40

15.80

30.33

29.10

pH (CaCl2)

pH

pH-meter

2,108*1

1,867*2

3.32

7.98

5.88

5.85

1.10

1.12

5.77

5.71

7.36

7.37

TOC

%

IR

2,095*1

1,854*2

0.40

46.00

2.55

2.62

3.98

4.21

1.80

1.70

3.90

4.10

Sr

mg/kg

AR

2,108*1

1,867*2

0.78

3,776.61

53.39

55.53

147.88

156.17

18.10

16.99

104.37

113.26

Sr

mg Sr/kg

XRF

2,108*1

1,867*2

7.00

4,564.00

144.38

150.10

183.30

192.51

101.00

104.00

259.00

266.00

Sr

mg/kg

MMI

2,108*1

1,867*2

< 0.01

90.2

2.65

2.46

4.52

4.26

1.67

1.50

5.19

4.82

Sr

%

AR/XRF

2108*1

1867*2

1.21

219.67

28.05

27.37

24.48

25.15

18.75

17.24

71.00

73.28

Sr

%

MMI/AR

2108*1

1867*2

> 0.01(0.01488)

51.05

9.64

9.10

6.39

6.23

8.40

7.68

18.01

17.33

*1EU – ALB, BEL, MAL, MLD, ROM

*2EU-28 plus NOR without MAL

 

Table 2: Grazing land soil concentrations

Parameter

Unit

Method

#

Min

Max

Mean

STD

50p

90p

CEC

meq/100g

AAS

2,023*1

1,781*2

2.54

49.88

20.42

20.01

9.39

9.32

18.75

17.96

33.87

33.42

pH (CaCl2)

pH

pH-meter

2,022*1

1,780*2

3.26

8.06

5.68

5.63

1.16

1.17

5.45

5.38

7.33

7.33

TOC

%

IR

2,022*1

1,780*2

0.41

49.00

4.05

4.24

5.36

5.63

2.70

2.80

6.80

7.00

Sr

mg/kg

AR

2,023*1

1,781*2

0.63

4,246.66

59.48

62.92

204.43

216.75

17.84

17.22

105.01

119.40

Sr3

mg/kg

XRF

2,023*1

1,781*2

7.00

8,072.00

145.54

152.74

307.00

324.97

90.00

92.00

252.00

260.00

Sr

%

AR/XRF

2023*1

1781*2

1.28

119.40

30.09

29.69

25.40

26.15

21.02

19.56

74.38

76.90

*1EU – ALB, BEL, MAL, MLD, ROM

*2EU-28 plus NOR without MAL

Applicant's summary and conclusion

Conclusions:
In agricultural soil, ambient concentrations of Sr range from <1 to 3777 mg/kg Sr with 50th and 90th percentiles of 18 and 104 mg/kg Sr, respectively.
Ambient strontium levels (measured in AR extracts) of grazing land soils range from <1 to 4,247 mg/kg Sr with 50th and 90th percentiles of 18 and 105 mg/kg Sr, respectively.