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Table 2 Results of XRF-measurement, EF calculation, and grain size analysis for all flood samples

From: The risk may not be limited to flooding: polluted flood sediments pose a human health threat to the unaware public

Sample N°

1

2

3

4

5

6

7

8

9

10

11

12

\(\overline{x}\) + 2σ-background

Absolute concentrations (mg/kg)

 c(Al)

48,645

64,900

50,310

55,550

52,145

53,825

58,410

56,045

54,280

55,675

47,450

56,835

82,564.0

 c(Ni)

56.1

73.1

70.9

64.9

60.4

63.1

66.7

63.8

58.6

75.3

55.2

64.8

28.5

 c(Cu)

241.1

375.2

498.1

366.9

358.0

331.5

374.8

384.1

284.6

568.2

331.5

404.7

29.0

 c(Zn)

1797.0

4844.5

8760.0

8420.5

4971.5

5635.0

5772.5

6246.5

4812.0

8586.5

7704.0

6294.0

112.3

 c(As)

38.7

 

71.8

73.4

79.6

57.6

85.9

83.7

86.1

83.4

54.0

64.8

28.6

 c(Cd)

8.1

43.5

29.5

22.8

21.7

17.2

26.3

28.0

25.3

29.1

25.0

20.7

5.5

 c(Sn)

18.5

29.0

25.2

21.9

24.6

16.9

19.8

24.0

25.4

27.9

18.9

17.7

6.4

 c(Sb)

19.2

32.2

11.1

9.5

19.9

7.6

16.3

17.7

22.3

10.0

7.5

12.2

6.6

 c(Pb)

772.4

1633.0

1583.5

1548.0

1204.5

1228.5

1298.0

1306.0

1169.0

1683.0

1100.5

1467.5

161.6

Enrichment factor with Al as reference element

 EF(Ni)

3.3

3.3

4.1

3.4

3.3

3.4

3.3

3.3

3.1

3.9

3.4

3.3

 

 EF(Cu)

14.1

16.5

28.2

18.8

19.6

17.5

18.3

19.5

14.9

29.1

19.9

20.3

 

 EF(Zn)

27.2

54.9

128.0

111.5

70.1

77.0

72.7

82.0

65.2

113.4

119.4

81.4

 

 EF(As)

2.3

 

4.1

3.8

4.4

3.1

4.2

4.3

4.6

4.3

3.3

3.3

 

 EF(Cd)

2.5

10.0

8.8

6.1

6.2

4.8

6.7

7.5

7.0

7.8

7.9

5.4

 

 EF(Sn)

4.9

5.7

6.4

5.0

6.0

4.0

4.3

5.5

6.0

6.4

5.1

4.0

 

 EF(Sb)

4.9

6.2

2.8

2.1

4.8

1.8

3.5

3.9

5.1

2.2

2.0

2.7

 

 EF(Pb)

8.1

12.9

16.1

14.2

11.8

11.7

11.4

11.9

11.0

15.4

11.8

13.2

 

Grain size distribution

 Mean (µm)

111.7

21.9

217.6

158.4

81.4

94.8

104.6

69.7

31.7

91.0

91.2

86.6

 

 Mode (µm)

34.6

28.7

185.4

223.4

45.8

72.9

34.6

38.0

38.0

50.2

60.5

72.9

 

 Median (µm)

25.1

14.0

122.6

142.6

40.2

59.4

26.3

27.4

25.1

46.5

54.7

55.2

 

 PM0.1 (%)

0.4

0.5

0.2

0.2

0.3

0.3

0.4

0.4

0.4

0.3

0.3

0.3

 

 PM2.5 (%)

14.3

16.7

6.5

6.4

9.6

9.2

12.5

12.6

13.0

9.9

8.5

9.4

 

 PM10 (%)

33.5

42.3

14.0

13.2

21.5

19.3

29.0

28.2

29.2

21.3

17.8

19.3

 

 PM50 (%)

68.5

92.4

31.7

27.8

61.3

45.9

74.1

75.9

82.4

54.4

48.4

48.3

 
  1. Concentrations of all trace metals analyzed in further detail along with concentrations of Al are given for all samples and the calculated background baseline. The selection of the tace metals is based on their EF being > 1 for all samples. Additionally, the grain size statistics are given, including the percentage of health-relevant size classes