This scheme extracts the sediment bounded metals into the following five fractions:exchangeable(F1),carbonates bound(F2),Fe–Mn oxides bound(F3), organic matter bound (F4) and residual form (F5).
This scheme extracts the sediment bounded metals into the followingfive fractions:exchangeable(F1),carbonates bound(F2),Fe–Mnoxides bound(F3), organic matter bound (F4) and residual form(F5).