1、 KS D ISO 4159 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS KS D ISO 4159 : 2002 (2007 ) 2002 10 30 http:/www.kats.go.kr . ICS 77.100 KS D ISO 4159 2002 Ferromanganese and ferrosilicomanganese Determination of manganese content Potentiometric method 1978 1 ISO 4159(Ferromanganese and ferrosilicomangane
2、se Determination of manganese content Potentiometric method) . . 55 95 %(m/m) . . ISO 3713 Ferroalloys Sampling and preparation of samples General rules , . pH ( ) . 4Mn 2 MnO 4 8H 15(P 2 O 7 H 2 ) 2 5Mn(P 2 O 7 H 2 ) 3 3 4H 2 O ( , ) . , , . 4 1+2 . 1+4 . 2 L 1 L (P 2 O 7 Na 4 10H 2 O) 145 g . 60 .
3、 . . . ( ) 50 g . (70 80 ) 200 mL . ( ) 20 . ( ) D ISO 4159 2002 2 . . 10 . . ( : 4) . . ( .) 160 mL . 5 150 mm . . 2 110 . . . Mn 34.76 %(m/m) . 1000 mL 3.20 g . 6 . . . 2.5 g 0.000 2 g 250 mL . . . (T) 1 mL (g) . 250 50 ) ( 100 76 . 34 0 1 1 = V V m T 0 1 152 069 . 0 V V m = m 1: ( ) (g) V 0: ( )
4、(mL) V 1: ( ) (mL) . ( ) . 40 mL . 250 mL . 600 mL . 250 mL . 250 mL 400 mL . . . ISO 3713 160m . 1 0.000 2 g . D ISO 4159 2002 3 . . ( ) ( ) . ( ) 20 mL ( ) 0.2 mL . ( ) 10 mL . . ( ) ( ) . ( ) 10 mL ( ) 10 mL ( ) 20 mL . . ( ) 20 mL . . . 100 mL . ( ) . . . . 50 mL ( ) . 100 mL . ( ) 250 mL . ( )
5、. pH ( ) ( ) pH 6.5 7 . , pH 30 . ( ) . . 100 mV . . %(m/m) . () 0 0 2 100 50 250 m V V T () 0 0 2 500 m V V T = m 0: ( ) (g) V 0: ( ) (mL) V 2: ( ) ( ) (mL) T : ( ) 1 mL (g) 95 % 0.20 % . . KS D ISO 4159 : 2002 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Ferromanganese and ferrosilicomanganese Determination of manganese content Potentiometric method ICS 77.100 Korean Agency for Technology and Standards http:/www.kats.go.kr
