地下水—化学需氧量的测定—碱性高锰酸盐氧化法

FHZDZDXS0087F-HZ-DZ-DXS-0087300mg/L0.4mg/L4mg/LCOD233.1500g/L3.21+3100mL1.84g/mL,300mL[c451KMnO=0.01mol/L]3.3[c21Na2C2O4=0.0100mol/L]0.6700g1051102hNa2C2O41000mL5mL3.43.4.1[c451KMnO=0.1mol/L]3.2g1000mL10min4KMnO3.4.2[c451KMnO=0.01mol/L]1010.0mL[c21Na2C2O4=0.0100mol/L]70[c451KMnO=0.01mol/L]V1cKMnO4=V10010×.111cKMnO4mol/LV10.0mL[c21Na2C2O4]=0.0100mol/L]mL44.1COD34.2100mL100mL5100mL250mL0.5mL500g/L10.0mL[c451KMnO=0.01mol/L]30min10.0mL[c21Na2C2O4]=0.0100mol/L]5mL1+370[c451KMnO=0.01mol/L]66.122oρCODρ=()V100099977VVC21××−×.222oρCODρmg/L-O2C,mol/LV110mLmLV210.0mLmL7.99971.00mL[c451KMnO=1.000mol/L]VmL783.5mg/L,0.14mg/L4.0%8[1]DZ/T0064.69-93.2[S]..1996192.[2].GB/T85381995[S]..1996109.[3][J]..19884.134-135.3