From: Evaluation of the effects of mandarin (Citrus reticulate) by-products containing citric acid on immobilization of cadmium in arable soils
Soil property
Cd fraction
F1
F2
F3
F4
F5
Soil pH
− 0.253
+ 0.434
+ 0.141
+ 0.104
+ 0.05
Negative charge
− 0.998***
+ 0.984***
+ 0.293
− 0.386
+ 0.783**
HxCO3
− 0.971***
+ 0.537*
+ 0.744**
+ 0.623*
+ 0.993***