1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS D ISO 5196 2 2: KS D ISO 5196 2:2010 2010 12 15 http:/www.kats.go.krKS D ISO 5196 2:2010 : ( ) () ( ) ( ) : (http:/www.standard.go.kr) : :2003 9 30 :2010 12 15 2010-0596 : : ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS D ISO 5196 2:2010 2: Magnesium
2、 alloys Determination of thorium Part 2: Titrimetric method 1980 1 ISO 5196 2, Magnesium alloys Determination of thorium Part 2: Titrimetric method , . 1 . 0.25.0 %( ) . 2 , 90 EDTA . 90 EDTA . 3 , . 3.1 ( 1.1 g/mL), 20 %( ) 6 mol/L 12 mol/L ( 1.19 g/mL) 500 mL 1 000 mL . 3.2 ( 1.0 g/mL), 0.005 mol/
3、L 12 mol/L ( 1.19 g/mL) 5 mL 1 000 mL . 3.3 , 100 g/L KS D ISO 5196 2:2010 2 (NH2OH HCl) 10 g 100 mL . 3.4 ( 0.91 g/mL) 3.5 ( 0.98 g/mL) (3.4) 200 mL 1 000 mL . 3.6 0.25 mol/L, 2 %( ) 80 mL (15 g/L) 500 mL . 3.7 , 0.5 g/L 3.7.1 . 3.7.1.1 99.9 % 0.500 g 0.001 g 30 mL , 5 mL . . (3.1) 40 mL 50 mL . 1
4、000 mL . 3.7.1.2 (ZrOCl2 8H2O) 1.77 g (3.1) 20 mL 1 000 mL . 3.7.2 . 3.7.2.1 (3.7.1) 100 mL 250 mL , 40 mL (3.1) 60 mL 150 g/L 50 mL . 80 20 . (3.1)(40 mL/L) (50 g/L) . 9501 000 , (mg/mL) . Vm 3740.0 m : (mg) V : (mL) 0.740 3 : ZrO2 Zr 3.7.2.2 p- KS D ISO 5196 2:2010 3 (3.7.1) 100 mL 250 mL 70 mL .
5、80 80 p- 50 mL 20 80 . p- (0.1 mol/L) 23 mL , . (5B) . 9501 000 (ZrO2) , (mg/mL) . Vm 3740.0 m : (mg) V : (mL) 0.740 3 : ZrO2 Zr 3.8 EDTA 0.01 mol/L 3.8.1 EDTA(disodium ethylene diamine tetraacetate) 3.75 g 1 000 mL ( .) . 3.8.2 1 g 0.001 g 400 mL . 15 mL (3.1) 30 mL . (3.7) 10 mL 5 . (3.3) 30 mL 20
6、0 mL . 1 mL 23 . 85 EDTA (3.8.1) . (4.2) , 90 . . 3.8.3 0.01 mol/L . V49.5 V : (3.7) 10.0 mL EDTA (3.8) (mL) 5.49 : 5.0 mg Zr(5.0: 0.91 5.494 5: 1) 0.01 mol/L EDTA 1 mL ( 1 mL 0.91 mg Zr) 3.9 , 1 g/L KS D ISO 5196 2:2010 4 0.1 g 100 mL . 4 4.1 pH 4.2 , . 5 5.1 1)5.2 1 mm (chips) 6 6.1 (5.2) 1 g 0.00
7、1 g . 6.2 . (3.1) 15 mL . 6.3 6.3.1 (6.1) 400 mL , 15 mL (3.1) 30 mL . 5 . (5B) . (3.2) ( ). 6.3.2 (3.3) 30 mL 200 mL . (3.9) 1 mL 23 . 85 EDTA (3.8) . 90 . 1) . KS D ISO 5196 2:2010 5 . 6.3.3 (3.4) . pH (4.1) pH 1.6 (3.5) . 10 mL (3.6) . EDTA (3.8) . 85 . (4.2) 90 . EDTA . 7 (Th) . mfVV1032.2)(1 V
8、: EDTA (3.8) (mL) Vl : EDTA (3.8) (mL) f : EDTA (3.8) (3.8.3 ) m : (g) 2.32 : 0.01 mol/L EDTA 1 mL (mg) 8 . a) b) c) d) KS D ISO 5196 2:2010 6 KS D ISO 5196 2:2010 . 1 . (KS) (ISO) , . 2 1980 ISO 5196 2, Magnesium alloys Determination of thorium Part 2:Titrimetric method , , “ 2: ” . , SI . 3 , 90 EDTA , 90 EDTA . 2: 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KS D ISO 5196 2:2010 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Magnesium alloys Determination of thorium Part 2:Titrimetric method ICS 77.120.20 Korean Agency for Technology and Standards http:/www.kats.go.kr