GB T 6730.11-xxxx 铁矿石 铝含量的测定 EDTA滴定法(送审稿)

ICS73.060.10D31GB/T6730.11—××××Ironores--Determinationofaluminiumcontent--EDTAtitrimetricmethod(ISO6830:1986MOD)----GB/T6730.11—××××IISO68301986EDTAISO68301986ISO683019864.170.01000mol/L0.02000mol/L0.01000mol/LISO683019867.5.1ISO683019867.5.2R2O3ISO683019867.5.3EDTAEDTAGB/T6730.11—××××112GB/T6682(GB/T6682-1992,)3R2O3EDTAEDTAEDTAEDTA4GB/T××××—200225GB/T6730.11—××××37GB/T××××—200247.5.310ml4.203min5-74.194.2020ml4.173min1-24.2088.1mVVkmmWAl)()/(%)(0-=10.2000mol/L0.053960.01000mol/L0.02698ml4.20ml4.20mlm8.28.2.1Rd0.0289+0.016720.0422+0.032330.0104+0.006040.0134+0.01025——PσσGB/T6730.11—××××522112mmm+=—1—2—||P8.2.1||C||CC)(222AcVnCdL++=ssnCdLss222+=GB/T××××—20026GB/T6730.11—××××7|X1-X2|Rd221XX+=mXmax-Xmin1.2RdX33321XXX++=mX444321XXXX+++=m=mX1,X2,X3,X4Xmax-Xmin1.3RdX1X2GB/T××××—20028B1.ISO/TC102/SC2N605E1980.8ISO/TC102/SC2ISO/TC1022.ISO5725GB/T6730.11—××××9C