高锰酸钾法测定废水COD精

COD,,,mg/L,,,,,1.2.250mL3.50mL1.(C(1/5KMnO4=0.1mol/L:3.2g1.2L,,1L,,G-3,2.(C(1/5KMnO4=0.01mol/L:25mL,?250mL,,0.01mol/L3.1+34.(C(1/2Na2C2O4=0.1000mol/L?:0.6705g105-110,100mL,5.(C(1/2Na2C2O4=0.0100mol/L?:10.00mL100mL,1.100mL(5mg/L,,100mL250mL2.5mL(1+3,3.10.00mL0.01mol/L,,30(4.,10.00mL0.0100mol/L,,?0.01mol/L,5.:70,?10.00mL(0.0100mol/L0.01mol/L,(K:K=:V(mL,?100mL,1.,,,,2.,60-80,,,1.(O2,mg/L=:V1(mL;K;M(mol/L;8(1/2O22.(O2,mg/L=,V0(mL;V2(mL;C,:10.00mL90mL100mL,C=0.90