Environmental Engineering Reference
In-Depth Information
600
4000
soil B
soil A
Mg
Ca
Mg
Ca
3000
400
2000
200
1000
0
0
0
0.05 0.1
0.5
1
2
5
10
20
0
0.05 0.1
0.5
1
2
5
10
20
citric a cid concentra tion (mmol / L)
citric a cid concentra tion (mmol / L)
600
4000
soil A
soil B
3000
Mg
Ca
400
Mg
Ca
2000
200
1000
0
0
0
0.05
0.1
0.5
1
2
5
10
20
0
0.05 0.1
0.5
1
2
5
10
20
oxa lic a cid concentra tion (mmol / L)
oxa lic a cid concentra tion (mmol / L)
4000
600
soil A
soil B
Mg
Ca
3000
Mg
Ca
400
2000
200
1000
0
0
0
0.05
0.1
0.5
1
2
5
10
20
0
0.05 0.1
0.5
1
2
5
10
20
ma lic a cetic concentra tion (mmol / L)
ma lic a cid concentra tion (mmol / L)
600
4000
soil B
soil A
Mg
Ca
3000
400
Mg
Ca
2000
200
1000
0
0
0
0.05 0.1
0.5
1
2
5
10
20
0
0.05 0.1
0.5
1
2
5
10
20
a cetic a cid concentra tion (mmol / L)
a cetic a cid concentra tion (mmol / L)
Figure 4. The effect of four organic acids of different concentrations on cations releases in the alkaline
and acid soils. Symbols represent mean ± SEM.
