KS D ISO 7693-2002 Ferrotungsten-Determination of tungsten content-Cinchonine gravimetric method《钨铁 钨含量的测定 辛可宁(Cinchonine)重量分析法》.pdf

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1、 KS D ISO 7693KSKSKSKSSKSKSKS KSKSKS SKSKS KSKS SKS KS KS D ISO 7693 : 2002 (2007 ) 2002 11 30 http:/www.kats.go.kr : ( ) ( ) () : (http:/www.standard.go.kr) : : 2002 11 30 : 2007 6 29 2007-0362 : ( 02-509-72747) . (http:/www.kats.go.kr) 7 5 , . ICS 77.100 KS D ISO 7693: 2002(2007 ) FerrotungstenDet

2、ermination of tungsten content Cinchonine gravimetric method 1984 1 ISO 7693 Ferrotungsten Determination of tungsten contentCinchonine gravimetric method . 1. . 1 . 70 90 %(m/m) . 2. . . ISO 3713 Ferroalloys Sampling and preparation of samples General rules 3. , . . . . . . . . ( A ). . 4. , , . 4.1

3、 4.2 4.3 (NH4)2HC6H5O7 4.4 (B2O3) 4.5 ( 1.40 g/mL)( 14 mol/L) 4.6 ( 1.16 g/mL) 48 %(m/m) . 4.7 ( 1.19 g/mL)( 12 mol/L) 4.8 ( 0.790 g/mL) 4.9 1 1 . D ISO 7693: 2002 2 1 ( 1.84 g/mL, 18 mol/L) 1 . . 4.10 1 9 . 9 (4.7) 1 . 4.11 1 99 . 99 (4.7) 1 . 4.12 1 1 . 1 0.885 g/mL, 32 %(m/m) 1 . 4.13 (20 g/L) 2

4、g 100 mL . 4.14 (125 g/L) 125 g 1 1 (4.7) 1 1 (4.7) 1 000 mL . 4.15 (30 g/L) 3 g (4.2) 95 mL . 100 mL . . 4.16 / (4.14) 10 mL, (4.15) 5 mL (4.7) 2.5 mL 1 000 mL . . 4.17 (100 g/L) 100 g . 1 000 mL . 4.18 ( II) (200 g/L) 1 1 (4.7) . (II)(2 )(SnCl2 2H2O) 40 g 1 1 (4.7) 150 mL . . 1 1 200 mL . . 4.19 (

5、1 g/L) (4.8) . 5. . 5.1 (1) , (1) ( A ). 5.2 . 460 nm . 5.3 1( 2) cm . 6. ISO 3713 160 m . 7. 7.1 10.001 g . 7.2 , . 7.3 1 . 7.4 7.4.1 60 mL (4.6) 5 mL . 1 . . (4.9) 15 mL . D ISO 7693: 2002 3 , (4.7) 10 mL 30 mL . 7.4.2 60 mL 600 mL . (4.10) . (4.12) ( ) (4.13) . 600 mL . 7.4.3 60 mL . . 750 . (4.1

6、) 0.5 g (4.4) 0.5 g . , . . 600 mL (7.4.2 ) . . 7.4.4 7.4.4.1 (4.7) 10 mL 600 mL . 5 . 450 mL . (4.14) 30 mL 90 30 . 4 . 7.4.4.2 (4.15) 5 mL . 1 . 11 cm . / (4.16) 3 (4.11) . . , . (4.5) . 750 (2) ( 30 ) . (2) 750 750 . . 7.4.4.3 (4.1) 5 g . (4.1) 1 2 g . . . (4.8) . ( A). . (4.1) 1 2 g . . (4.8) (

7、B). A B ( A ). 750 . . 8. %(m/m) . D ISO 7693: 2002 4 100)()(0793.004321mmmmm m0: (g) m1: (g)(7.4.4.2 ) m2: (g)(7.4.4.3 ) m3: (g)(7.2 ) m4: (g)(7.2 ) 0.793 0: 9. . a) b) c) d) e) D ISO 7693: 2002 5 A A.1 (1/ 100 %) . , . A.2 80 mL (A B) . 100 mL . ( 0.30 mg ) 10 mL 50 mL . (4.3) 2 g . (4.19) 3 , (4.

8、7) 5 mL . (4.17) 5 mL, (4.2) 20 mL (II) (4.18) 7 mL . . 460 nm (5.1) (5.2) ( 1 cm .). 15 . (A.3 ), . A.3 6 50 mL (L Mo 0.050 mg 0.010 mg ) . (4.3) 2 g . A.2 . . 135513 7017 (02)60094567 (02)6009 4887 8 http:/ KS D ISO 7693 : 2002 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS FerrotungstenDetermination of tungsten contentCinchonine gravimetric method ICS 77.100 Korean Agency for Technology and Standards http:/www.kats.go.kr

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