1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS E 3916 KS E 3916:2011 2011 9 2 http:/www.kats.go.krKS E 3916:2011 : ( ) ( ) () ( ) : (http:/www.standard.go.kr) : :2001 12 31 :2011 9 2 2011-0313 : : ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS E 3916:2011 Determination of niobium in titanium ores
2、1 . 2 . . ( ) . KS E 3059, 3 ICP . 0.005 % 0.5 % . 4 ICP 4.1 , ICP . 4.2 a) b) c) d) ( ) e) ( 1, 2) f) ( ) g) (99.5 % ) 2.00 g (300 mL) , (1 1) 40 mLKS E 3916:2011 2 . 1 000 mL , . 1 mL 2 mg . h) (99.9 % ) 2.50 g (300 mL) (1 2) 50 mL , . 250 mL , . i) ( , .) 20 mL (300 mL) 50 mL . 1 000 mL . j) (100
3、 mg/L) (99.7 % ) 0.100 g (100 ) 10 mL, (1 1) 5 mL , , (200 g/L) 20 mL , (8 g/L) 1 000 mL . 1 mL 100 g . 4.3 4.3.1 . a) 0.5 g 1)5 g , , 2 g ( ) . b) , , 2) 5 . c) 3)(300 mL) , 100 mL , , . d) 250 mL 3),4), . 4.3.2 . a) 4.3.1 d) ICP 269.71 nm 309.42 nm . b) 5)4.3.1 d) ICP 269.71 nm 309.42 nm 228.62 nm
4、 , . 1) . , 5 g 2 g , . ( ) . 2) , . 3) 5 mL . 4) 4.3.2 b) 5 mL . 5) 2 . KS E 3916:2011 3 4.4 4.5 , . 4.5 . a) () 6)5 g , 7) , 2 g ( ) . b) 4.3.1 b) c) . c) 8)250 mL . d) 0 25 mL ( 0 2.5 mg) 3),4), . e) 4.3.2 , . 4.6 a) 4.3.2 4.4 4.5 e) , . 100)(321=mAAANb Nb : (%) A1 : (g) A2 : (g) A3 : 4.5 a) () (
5、g) m : (g) b) () 4.6 a) (%) . Nb2O5 Nb 1.431 Nb2O5 : () (%) Nb : 4.6 a) (%) 6) . 7) . 8) 269.71 nm , . 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS E 3916:2011 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Determination of niobium in titanium ores ICS 73.060.99