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Environmental Sciences Europe

Table 8 Element composition of tomato fruits samples (ppb)

From: Investigating the potential of growing crops hydroponically utilizing feed and draw solutions from fertilizer drawn forward osmosis

Group

Sample

P

(ppb)

Zn

(ppb)

Ca

(ppb)

Fe

(ppb)

Cu

(ppb)

Pb

(ppb)

Mg

(ppb)

Mn

(ppb)

K

(ppb)

Na

(ppb)

Freshwater

1

1.11

2.00

23.27

2.94

0.69

0.42

103.13

2.09

95.24

3.42

2

1.31

1.53

15.29

2.18

0.11

0.38

60.98

0.76

61.63

2.38

Average

1.21

1.76

19.28

2.56

0.40

0.40

82.05

1.43

78.43

2.90

3500 ppm

1

− 0.11

3.68

79.53

6.97

1.09

0.45

192.32

2.87

194.42

23.65

2

− 0.31

3.66

48.10

6.65

1.34

0.52

149.55

3.29

181.52

14.60

Average

− 0.21

3.67

63.82

6.81

1.21

0.48

170.94

3.08

187.97

19.12

5000 ppm

1

0.00

2.81

36.10

5.71

0.79

0.41

134.53

3.06

170.30

16.98

2

0.01

2.74

55.71

6.01

1.26

0.50

144.80

2.64

164.29

20.54

Average

0.01

2.78

45.91

5.86

1.03

0.46

139.67

2.85

167.29

18.76

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