1、 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2003 4 30 KS D 1803 KS D 1803: 2003 D 1803: 2003 ( ) ( ) KIST ( ) ( ) POSCO ( ) : : 1963 9 30 : 2003 4 30 03 412 : : ( ) ( 02 509 7252) . 7 5 , . ICS 77.040.40 KS D 1803: 2003Methods for determination of sulfur in iron and steel 1. . 2. . . KS D 1779 KS D 1
2、801 KS M 0012 KS M 8001 3. 3 . a) 2 . 1) MIBK 0.005 % . 2) 0.003 % . b) 6 . 1) 0.005 % . 2) 0.005 % . 3) 0.005 % . 4) 0.005 % . 5) () 0.005 % . 6) () 0.005 % . c) 0.05 % . 4. MIBK 4.1 , , MIBK . , . . , . 4.2 a) b) (21) c) (19) D 1803: 2003 2 d) (1100) e) 1.42 . f) g) h) MIBK() i) 0.001 % . , . 0.50
3、0 g (300 mL) 10 mL , 5 mL , . (2 1) 10 mL . (2 1) 20 mL (200 mL) , MIBK 30 mL 1 . . (2 1) 20 mL 1 . . 20 mL 1 . . 10 mL 1 . . , 5 MIBK , 5 mL . j) (BaCl2 2H2O) 100 g 1 L . (5 C) . k) (BaCl2 2H2O) 1 g (2 100) 1 L (5 C) . l) (1%) m) 5 mL 100 mL . n) (0.05mg S/mL) 110 (K2SO4) 5.435 2 g , (1 000 mL) (1.
4、0 mg S/mL) . 20 . 4.3 a) (1) (500 mL) , 1.0 g . 10 g 50 mL , 30 mL 2 3 mL , 10 g 50 mL , 30 mL . , . b) 200 20 mL . 30 mL (2) , . 50 mL , D 1803: 2003 3 , 200 20 mL . 30 mL , 80 mL (5 A) , (1 9) . (300 mL) 30 mL . c) (2 1) 70 mL (300 mL) . MIBK 120 mL , 1 . (300 mL) . (2 1) 20 mL 30 , . (2 1) 20 mL
5、30 , . MIBK 80 mL 1 . (500 mL) . (2 1) 20 mL 30 , (2 1) 20 mL . d) 10 10 mL , 30 mL . 15 mL , . 20 mL (5 C, 9 cm) (1 200) 50 mL . (300 mL) , . 10 mL , 10 mL 1 , 10 2 . 2 mL 5 . e) (5 C, 11 cm) , 1 . , 2 3 . (1 %) . (30 ) , 500 , 800 20 . 20 , . f) 0.500 g (3) (500 mL) , , 10 . . 4.3 b) (4) , . 10040
6、.137S(%) =Sww )(D 1803: 2003 4 w: 4.3 e) (g) w: 4.3 f) (g) S: (g) (1) . % g 0.005 0.05 10.0 0.05 0.10 5.0 0.10 0.25 2.0 0.25 1.0 (2) . , , . (3) MIBK 0.500 g . 4.3 b) . (4) . 5. 5.1 . . , . . , . 5.2 a) b) (19) c) (119) d) (11) e) . f) 20 mL 1 000 mL . g) h) 2.8 mL 500 mL 1 000 mL . 30 mL 1 000 mL .
7、 10 mL 0.48 mg . i) (119) j) (199) k) l) 5.00 g (500 mL) , 25 mL 375 mL , 50 . , . m) (BaCl2 2H2O) 1.22 g 1 000 mL , 32D 1803: 2003 5 (5 C) . 1 mL 0.16 mg . n) (0.05 %) o) ( 75 m, 1 2; , ). 5.3 . a) ( 1 ) 20 mm . 100 120 mm , (1 19) . . (1 19) , 10 15 mL . , . 20 mL , (1 19) 20 mL 20 mL . (1 19) , p
8、H . (1 9) 20 mL 20 mL . (1 9) 20 mL 20 mL . (1 1) 1 50 mL . (1 19) 20 mL , 20 mL . (1 19) 30 mL . , . . ( 75 m: 1 2 ; , ) 200 g 300 mL (500 mL) . 5 mm , . 1 . 12 . , (1 19) . 1 (5). 1 % g 0.003 0.005 10.02(6) 0.005 0.05 10.0 0.05 10.0 (7) 5.4 a) (1 000 mL) , D 1803: 2003 6 1 mL . 50 mL . 50 mL , . 1
9、 . 5 6 50 mL . (500 mL) , . b) , 1 mL . 100 mL . 50 mL , . 1 . 5 6 50 mL . (500 mL) , . c) a), b) 10 mL , 120 mL(8) (9) . , (10). d) c) 200 mL , 1 , (5 B) (800 mL) (11). . e) (12), d) (13) 10 mL . , . , (1 19) 25 mL 2 . 20 mL 2 . . f) (300 mL) , (1 19) 15 mL . (1 99) 40 mL , 30 40 mL . g) f) (0.05 %
10、) (1 19) , 2 mL 50 mL . (5 B, 9 cm) (300 mL) 4 . (14) 1 . 1 20.0 mL , 12 . (6 , 9 cm) , 5 10 mL 6 . h) g) 800 , (30 ) , 800 . , . D 1803: 2003 7 10040.137S(%) =Sww )( w: 5.4 h) (g) w: 5.4 i) (g) S: (g) i) . (6) 2 . (5) , . (6) 10.0 g 2 . (7) 0.005 g . (8) 50 mL . (9) . , , , . (10) 0.005 g . , 5 mL
11、. . (11) , 10.0 g 12.5 g 500 mL 10.0 g (400 mL) . (12) 30 mL , (1 19) . (13) 0.005 % 10.0 g 2 , 20.0 g 1 . (14) 5.4 c) 10 mL 4.8 mg 30 mL . D 1803: 2003 8 1 6. 6.1 , . , 1 % . 6.2 KS D 1779 7.2.2( ) . 6.3 KS D 1779 7.2.3( ) . 6.4 2 3 , (15) . 2 % g 0.1 1.0 (16) 0.1 0.50 (17) 0.50 3 g g , 1.0 0.50 0.
12、05 0.50 0.50 0.10 (17) 0.20 0.50 0.10 1.00 ( 120 150 mm 10 11 mm)( 50 mL)( 100 mL)( 120 150 mm 10 11 mm)D 1803: 2003 9 6.5 KS D 1779 7.2.4( ) . , 1 450 . 6.6 a) KS D 1779 7.2.5( ) (18). , c) . 1) 1 , 1 500 mL 2 . 2) 4 , 200 mL 1 1 500 mL 3 . b) KS D 1779 7.2.5 (19). c) KS D 1779 7.2.5 . (15) KS D 17
13、79 6.12( ) . (16) (15) . , . (17) l49 m(100 ) , 840 m(20 ) . (18) KS D 1779 7.2.5 . (19) , , . 7. 7.1 , , . 7.2 KS D 1779 7.3.2( ) . 7.3 KS D 1779 7.3.3( ) . 7.4 4 3 (20), (21) (22). 4 % g 0.10 1.0 0.10 0.25 0.50 0.25 0.50 7.5 KS D 1779 7.3.4( ) . , 1 450 . 7.6 a) KS D 1779 7.3.5( ) (23). , c) D 1803: 2003 10 . 1) 1 2 , , 1 000 mL . 2) 4 , , 200 mL 1 1 000 mL . b) KS D 1779 7.3.5 (24).