AKTIVITAS NANOMAGNETIT terhadap KANDUNGAN KLOROFIL pada TANAMAN BAYAM (Amaranthus spp)

Abstract

Synthesis of nanomagnetite was complete by hydrothermal on mixtures of urea, citric acid and some of iron salts: FeCl3·6H2O at 200 o C (FE120), FeCl3·6H2O at 250 o C (FE125), FeSO4·7H2O at 200 o C (FE220), and FeSO4·7H2O at 250 o C formula. Each of formula showed that averages of crystal sizes were 24.89 nm, 25.82 nm, 28.22 nm and 50.78 nm by XRD identification. Application of FE120 nanomagnetites was applied into spinaches increased concentration of iron and nitrogen after 30 days growth. The iron concentration was increased 3.62 % on soil media and 38.81 % on compos soil media. Nitrogen concentrations were increased 27.32 % on soil media and 66.67 % on compos soil media. Based on increased of iron and nitrogen concentration, there were influent of chlorophyll concentration 20.80 % on compos soil media and 8.87 % on soil media. Spinach that applied into media show the physics quality of stem diameter, leaf number, leaf area, and stem number better than control. Soil media and compos soil media weren’t contaminated by iron and nitrogen inside of FE120 nanomagnetite.