1、 KSKSKSKS KS D ISO 51961SKSKSKS KSKSKS SKSKS KSKS SKS KS 1: KS D ISO 5196 1: 2005 2005 12 30 D ISO 5196 1:2005 ( ) ( ) ( ) : :2003 9 30 :2005 12 30 20051163 : : ( ) ( 02 5097292 5) . 7 5 , . ICS 77.120.20 KS D ISO 51961:20051: Magnesium alloys Determination of thorium Part 1: Gravimetric method 1980
2、 1 ISO 5196 1 Magnesium alloys Determination of thoriumPart 1:Gravimetric method , . 1. . 0.2 5.0 %(m/m) . 2. . . 3. , 2 . 3.1 (NH2OHHCl) 3.2 (NH4Cl) 3.3 ( 1.19 g/mL) 38 %( m/m) 12 mol/L 3.4 ( 1.05 g/mL) 3 mol/L ( 3.3) 250 mL 1 000 mL . 3.5 ( 0.97 g/mL) ( 0.91 g/mL) 250 mL 1 000 mL . 3.6 20 g/L (C6H
3、5COOH) 20 g , 1 000 mL . 3.7 2.5 g/L (C6H5COOH) 2.5 g 1 000 mL . 3.8 (COOH)22H2O 150 g 1 000 mL . 3.9 ( 3.8) 70 mL 500 mL . 3.10 4 g/L 0.4 g 5 g/L 8.25 mL . 100 mL . 4. D ISO 5196 1:2005 5. 1) 5.1 (1 ( ) . 5.2 1 mm (chips) 6. 6.1 0.2 1.5 %(m/m) 5 g, 1.5 3.0 %(m/m) 3 g, 3.0 5.0 %(m/m) 2 g 0.001 g . 6
4、.2 6.2.1 ( 6.1) 400 mL 50 mL . ( 3.3) 7.5 mL . . ( .). 100 mL . . . 6.2.2 1 ( 3.1) l g . (3.10) 3 ( 3.5) ( 3.4) . ( 3.2) 10 g . ( 3.6) 100 mL 10 . ( ) ( 3.7) . 6.2.3 50 mL . ( 3.4) 10 mL 50 mL . , 125 mL . ( 3.8) 25 mL 12( ) . 6.2.4 , , ( 3.9) . (950 .) 500 , . 7. (Th) . 011008 878.0mm m0: (g) m1: (
5、g) 0.878 8: 8. . a) b) c) d) 2 KS D ISO 5196 1: 2005 1: . 1. . (KS) (ISO) , . 2. 1980 ISO 5196 1 Magnesium alloys Determination of thorium Part 1: Gravimetric method , “ 1: ” . , SI . 3. . . 3 1 : 2006 1 24 135513 7017 (02)60094567 (02)600948878 http:/ 607822 1 11( 10) (051)5571239 Fax. (051)557 043
6、0 702845 2 1741( 3 ) (053)38415624 Fax. (053)384 1565 790 380 627( 3 ) (054)2789661 Fax. (054)278 9662 406829 7 50( 16 ) (032)26002607 Fax. (032)260 0268 443766 906 5( 9 ) (031)25970009 Fax. (031)259 7010 200041 1 9( 304) (033)252 9423, 254 9423 Fax. (033)256 9423 361802 1508 1( 6 ) (043)23624513 Fa
7、x. (043)236 2454 305343 2314( 5 ) (042)86423013 Fax. (042)864 2304 330 816 43 5( 1204 ) (041)58905003 Fax. (041)589 0504 561736 1 337 2( 7 ) (063)21422357 Fax. (063)214 2238 506301 62115( 4 ) (062)95314357 Fax. (062)953 1438 641966 298 7 ( 6 ) (055)2121212 Fax. (055)212 1213 683804 7582( 2 ) (052)28
8、966013 Fax. (052)289 6604 425020 541 3( 4 ) (031)48761914 Fax. (031)487 6195 730350 9230( 8 ) (054)4736954 Fax. (054)473 6955 480848 2 487 6( 3 ) (031)82981824 Fax. (031)8298185 KS D ISO 5196 1:2005 KSKSKSSKSKS KSKS SKS KSKS SKSKS KSKSKSMagnesium alloysDetermination ofthoriumPart 1 : Gravimetric methodICS 77.120.20 KOREAN STANDARDS ASSOCIATION