KS M 8434-2012 Sodium hydrogensulfite《亚硫酸氢钠(试剂)》.pdf

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1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS M 8434 ( )KS M 8434:2012 2012 12 28 http:/www.kats.go.krKS M 8434:2012 : ( ) ( ) ( ) : (http:/www.standard.go.kr) : :1997 12 24 :2012 12 28 2012-0817 : : ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS M 8434:2012 ( ) Sodium hydrogensulfite 1 ( .) . 2

2、. . ( ) . KS M 8001, 3 3.1 (NaHSO3) (Na2S2O5) . . . 3.2 a) 1 g 20 mL (A ). 0.05 mol/L 5 mL A 10 mL . (100 g/L) 1 mL . b) A KS M 8001 6.29( ) a)( ) . 4 5. 1 . KS M 8434:2012 2 1 (SO2 ) (Cl) (PB ) (K) (As) (Fe) 64.0 % 67.4 % 0.01 % 0.002 % 0.01 % 5 mg/kg 0.002 % 5 5.1 (SO2 ) a) 0.05 mol/L 50 mL (200 m

3、L) 0.1 g 0.1 mg 5 , (2: 1) 2 mL 0.1 mol/L (: )(a mL). , (b mL). b) 100)(2203003.0=SfabA A : (SO2 )(%) S : (g) f : 0.1 mol/L 0.003 203 2 : 0.05 mol/L 1 mL SO2 5.2 2 g 20 mL . 5.3 (Cl) a) 0.5 g 10 mL, (100 g/L) 1 mL, 5 mL , (1: 2) 5 mL 50 mL . 10 mL( 0.1 g) (1: 2) 4 mL 25 mL . b) (100 g/L) 0.2 mL 1 mL

4、 10 mL, (0.01 mg/mL) 1.0 mL, (1: 2) 5 mL 25 mL . c) , (20 g/L) 1 mL 15 . KS M 8434:2012 3 5.4 (Pb ) a) 1.0 g 10 mL 5 mL 20 mL . b) 10 mL 5 mL (0.01 mg/mL) 2.0 mL 20 mL . c) KS M 8001 6.24 a)( ) . 5.5 (K) a) 1.0 g 5 mL 1 mL 50 mL (B ). B 5.0 mL( 0.1 g) 100 mL (X ). b) B 5.0 mL (0.01 mg/mL) 1.0 mL 100

5、 mL (Y ). c) KS M 8001 6.31( ) a)( ) 4)( ) . 766.5 nm 5.6 (As) a) 0.50 g 10 mL, 1 mL, 1 mL 20 mL (100 mL) . b) 1 mL 1 mL , (0.001 mg/mL) 2.5 mL 20 mL (100 mL) . c) 20 mL (100 mL) . d) KS M 8001 6.19 c)N,N- (AgDDTC ) 5) . 5.7 (Fe) a) 0.5 g 5 mL (2: 1) 3 mL 15 mL . b) 5 mL (2: 1) 3 mL ( ) (0.01 mg/mL)

6、 1.0 mL 15 mL . c) KS M 8001 6.22 b)(1,10- ) . 6 . KS M 8434:2012 4 7 30 C . 8 . a) “ ” “ ” b) c) ( ) d) e) f) g) () 153787 1 92 3(16) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS M 8434:2012 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Sodium hydrogensulfite ICS 71.040.30

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