1、 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2001 12 31 KS D ISO 1784 EDTA KS D ISO 1784 (2006 ) (ISO 1784: 1976, IDT) ICS 77.120.10 KS EDTA D ISO 1784: 2001(2006 )(ISO 1784: 1976, IDT)Aluminium alloysDetermination of zincEDTA titrimetric method 1976 ISO 1784(Aluminium alloys Determination of zinc EDT
2、A titrimetric method) . 1. EDTA . 0.10 12 %(m/m) . 2. . 2 M . 0.005 M . EDTA 2 Na . 3. . 3.1 4 ( , Dowex 12, De-acidite FF SRA 62 ) , (DVB) 2 3 % , 150 295 m( 52 100 mesh) . 3.2 0.79 g/mL 3.3 6 M , 1.10 g/mL (12 mol/L, 1.18 g/mL ) 515 mL 1 000 mL . 3.4 2 M , 1.03 g/mL ( 1.18 g/mL, 12 ) 170 mL 1 000
3、mL . 3.5 1 M , 1.01 g/mL ( 1.18 g/mL, 12 ) 85 mL 1 000 mL . 3.6 0.005 M (3.5) 5 mL 1 000 mL . 3.7 15 M , 67 %(m/m), 1.4 g/mL 3.8 , 36 %(m/m), 1.135 g/mL 3.9 14 M , 28 %(m/m), 0.90 g/mL 3.10 1 M , 1.007 g/mL ( 1.05 g/mL, 17.4 mol) 58 mL 1 000 mL . 3.11 (500 g/L) 50 g 100 mL . 3.12 (2 g Zn/L) 2 g 0.00
4、1 g (3.3) 50 mL D ISO 1784:2001 2 50 mL . 1 000 mL , . 1 mL 2 mg . 3.13 0.02 M (EDTA2 Na) 3.13.1 EDTA 2 Na(2 ) 7.5 g , 1 000 mL . . 3.13.2 50.0 mg (3.12) 25.0 mL ( , 400 mL) . 100 mL (3.14) , (3.9) . . (3.10) 10 mL (3.11) 10 mL , pH (3.15) pH . pH 5 5.5 . (3.10) pH . (3.2) 50 mL (3.16) 2 mL EDTA 2 N
5、a (3.13) . EDTA 2 Na 2 . 3.13.3 0.02 M f . Vf24.38= 38.24: 50.0 mg 0.02 M EDTA 2 Na , mL( : 1 mL 1.307 6 mg ) (50.0: 1.307 6 38.237 9) V: 25.0 mL (3.12)(2 mg25.0 50.0 mg) EDTA 2 Na (3.13) (mL) 3.14 3.15 0.2 pH 5 6 3.16 (phenylazo)thiofo mic acid, 2-phenylhydrazide , 0.25 g/L. 95 %(V/V) (1,5 diphenyl
6、 3 formazanthiol) 0.025 g , 100 mL . . 4. 4.1 20 mm, 400 mm . 5. 5.1 5.2 1 mm 6. 6.1 (3.6) (3.1) . . (3.6) ( ) . (4.1) D ISO 1784:2001 3 . , ( ) . 150 mm . 5 7 mL/min (3.6) 100 mL . (3.7) 0.5 mL (3.4) 200 mL . . 1. (3.6) . 2. . 6.2 (5.2) 2 g 0.001 g . 6.3 . 6.4 ( 400 mL) (6.2) , 50 mL (3.3) . (3.8)
7、, . . (3.4) 100 mL , . (3.3) . (3.4)( 30 50 mL) 2 . 6.4.1 0.10 % 1.5 %(m/m) . (3.4) 150 mL (3.7) 0.5 mL . 6.4.2 1.5 %(m/m) 200 mL , . (3.4) . . % (m/m) mL g 1.5 3 3 6 6 12 100.0 50.0 25.0 1 0.50 0.25 , (3.4) 150 mL (3.7) 0.5 mL . 6.5 (6.4.1, 6.4.2 ) 5 7 mL/min (6.1) . (3.4) , (3.4) 25 mL 5 7 mL/min
8、4 , (3.5) 100 mL . (3.5) 100 200 mL . (3.6) 250 mL ( ). ( 400 mL) . 100 mL . D ISO 1784:2001 4 6.6 (3.14) (3.9) . , (3.10) 20 mL (3.11) 10 mL . (3.15) pH . pH 5 5.5 . (3.10) . (3.2) 50 mL 5 . (3.16) 2 mL , EDTA 2 Na (3.13) . EDTA 2 Na 2 . 7. (Zn) ( %) . mDfVV106 307.1)(10 V0: EDTA 2 Na (3.13) (mL) V
9、1: EDTA 2 Na (3.13) (mL) f: EDTA 2 Na (3.13) (3.13.3) D: m: (g) 1.307 6: 0.02 M EDTA 2 Na 1 mL (mg) : : 2001 12 31 : 2006 10 2 2006-0451 : : ( ) ( 02 509 72757) . 7 5 , . 701-7 6009-4567, 6009-48878 http:/www.kssn.nwt KS D ISO 1784:2001 (ISO 1784: 1976, IDT) Aluminium alloysDetermination of zineEDTA titrimetric method ICS 77.120.10 : : 2006 10 2 : 2001 12 31 2006-0451 : : ( ) KSKSKSSKSKS KSKS SKS KSKS SKSKS KSKSKS