1、 KS D ISO 4173KSKSKSKSSKSKSKS KSKSKS SKSKS KSKS SKS KS KS D ISO 4173 : 2002 (2007 ) 2002 11 30 http:/www.kats.go.kr : ( ) ( ) () : (http:/www.standard.go.kr) ： : 2002 11 30 : 2007 6 29 2007-0363 ： ( 02-509-72747) . (http:/www.kats.go.kr) 7 5 , . ICS 77.100 KS D ISO 4173： 2002(2007 ) FerromolybdenumD
2、etermination of molybdenum content Gravimetric method 1980 1 ISO 4173 FerromolybdenumDetermination of molybdenum contentGravimetric method . 1. . . 2. . . ISO 3713 Ferroalloys Sampling and preparation of samples General rules 3. . EDTA . MoO2(C9H6NO)2 . 4. , . 4.1 50%( V/V ) 400 mL ( = 1.84 g/mL) 50
3、0 mL . . 100 mL . 4.2 25 %(V/V ) 1000 mL ( = 1.42 g/mL) 250 mL . 4.3 ( = 1.14 g/mL) 4.4 50 %(V/V ) 1 000 mL ( = 1.16 1.18 g/mL) 500 mL . 4.5 (460480 g/L) 460 480 g 1 000 mL . ( .) . 4.6 EDTA() (10 g/L) (2 ) 10 g 1 000 mL . 4.7 50 %(V/V ) 1 000 mL ( = 0.91 g/mL) 500 mL . 4.8 8- (30 g/L) 12 mL 8 3 g .
4、 60 mL 40 . (4.7) 1 . 1 . 100 mL . D ISO 4173 : 2002 2 4.9 ( =1.42 g/mL) 4.10 ( =1.161.19 g/mL) 4.11 5. . 6. ISO 3713 160 m . 7. 7.1 160 m 75 80 m . . 75 % 1 g , 50 % 1.25 g . 7.2 150 mL (PTFE) (7.1) . (4.1) 10 mL . (4.9) 1 0.5 mL . (4.3) 5 mL . 15 . (4.10) 5 mL (4.9) 5 mL 10 . 50 mL . ( 650 800 mL)
5、 (4.5) 50 mL 50 mL . . 1 mm 75 mm . . . (85 90 ) PFTE . 23 . 450 mL . 500 mL . 15 20 . 400 mL 100 mL . 200 mL EDTA (4.6) 10 mL (4.11) 3 g . . (4.4) (4.7) pH 4.0(pH ) . (4.8) 20 mL . . . . (2 3 ) . 80 90 5 10 . 510 m . . (80 90 ) 100 mL . 1 . . D ISO 4173 : 2002 3 125 . . . . a) , . . . b) . 1 . c) ,
6、 (4.2) , 125 . . (4.1) 510 mL . (4.9) . . . 100 mL . a) b) . 8. %(m/m) . m1 23.05 m0 m1: (g) m0 : (g) 9. 7 . 5 2 . 95% (2s) . 1 % (m/m) sbsw 2s 50 % 50.33 0.081 0.090 0.24 70 % 75.34 0.085 0.100 0.26 10. . a) b) c) d) 135513 7017 (02)60094567 (02)600948878 http:/ KS D ISO 4173 : 2002 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Ferromolybdenum Determination of molybdenum content Gravimetric method ICS 77.100 Korean Agency for Technology and Standards http:/www.kats.go.kr
