KS D ISO 7525-2012 Nickel－Determination of sulfur content－Methylene blue molecular absorption spectrometric method after generation of hydrogen sulfide《镍 硫含量的测定 生成硫化氢后亚甲蓝分子吸收光谱测定法》.pdf

1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS D ISO 7525 KS D ISO 7525:2012 2012 7 27 http:/www.kats.go.krKS D ISO 7525:2012 : ( ) ( ) () () ( ) : (http:/www.standard.go.kr) ： ：2002 12 9 ：2012 7 27 2012-0337 ： ： ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS D ISO 7525:2012 i ii 1 1 2 1 3 1 4 2 5

2、 5 6 6 7 6 7.1 .6 7.2 .6 7.3 .7 7.4 7 7.5 7 7.6 .7 8 .7 8.1 .7 8.2 .8 9 .8 10 .9 KS D ISO 7525:2012 ii 1985 1 ISO 7525, Nickel Determination of sulfur content Methylene blue molecular absorption spectrometric method after generation of hydrogen sulfide , . KS D ISO 7525:2012 Nickel Determination of

3、sulfur content Methylene blue molecular absorption spectrometric method after generation of hydrogen sulfide 1 0.000 1 0.002 % . 2 . . ( ) . KS A ISO 5725 1, ( ) 1： KS A ISO 5725 2, ( ) 2： KS A ISO 5725 3, ( ) 3： KS A ISO 5725 4, ( ) 4： KS A ISO 5725 5, ( ) 5： KS A ISO 5725 6, ( ) 6： 3 (SO42) . (for

4、mic acid) (NO3) . (hypophosphorous acid) H2S . (Zn-ammine) , 665 nm . . KS D ISO 7525:2012 2 4 , . (SO2), . 1 L 1 mg (S, 1 mg/L) . 0.05 mg S/L . 4.1 (1 4, 20 1.18 g/mL) 4.2 ( 20 1.098 g/mL) 1 (3 2)( 20 1.18 g/mL) 10 % . ( mL ). 4.3 ( 20 1.20 g/mL) 1 10 % . ( mL ). 4.4 4.4.1 1 ( 20 1.41 g/mL) 10 % .

5、( mL ). 4.4.2 30 mL (KClO3) 3 g (4.4.1) 100 mL . . KS D ISO 7525:2012 3 1 4.5 350 mL 2 Zn(CH3COO)2 2H2O 5 g (NH4Cl) 70 g , (NaOH) 7.5 g 500 mL . . 4.6 (reducing mixture) 55 % 55 % HI( 20 1.7 g/mL) 420 mL, 50 % 50 % H3PO2( 20 1.21 g/mL) 80 mL (NaI) 70 g 2 , 50 mL (4.5) H2S . 200 300 mL 10 . 4 113 115

6、 . . (9. ). , 50 cm 1 , 50 cm KS D ISO 7525:2012 4 2 4.7 (diamine salt solution) 26 mL 0.1 g (N, N-dimethyl-p-phenylenediamine hydrochloride or sulfate) , 100 mL . 1 . 4.8 (III) iron(III) chloride solution HCl( 20 1.18 g/mL) 10 mL 6 (FeCl3 6H2O) 1.0 g , 100 mL . . 4.9 , (S, 100 mg/L ) 105 1 (potassi

7、um sulfate) 0.543 5 g 1 L , . 1 mL 0.100 mg 34 cm 1 3 182.5 cm KS D ISO 7525:2012 5 . 4.10 99.998 % 5 5.1 3 , (double surface condenser) . 3 5.2 (heating mantle) 114 . 34 cm 250 mL 100 mL 3 82 cm 82 cmKS D ISO 7525:2012 6 . . 5.3 665 nm . 5.4 10 L, 20 L, 50 L, 100 L 6 6.1 , . 6.2 , , , . 6.3 . 6.4 (

8、riffling) . 7 . , . 7.1 7.1.1 1.0 g 0.01 g 100 mL 250 mL 3 (4.4) 10 mL . . 7.1.2 (4.2) 10 mL . (4.3) 2 mL . 10 mL 0.5 mL . . 1 . 3 . 2 3 . . . 3 , 7.1.2 . 7.2 KS D ISO 7525:2012 7 7.2.1 3 (5.1) , 1 4 3 mL (4.5) 5.0 mL . (4.6) 30 mL (side arm) . 7.2.2 (4.10) 30 mL/min . 2 30 . . 7.3 7.3.1 (4.7) 3.0 m

9、L (III) (4.8) 0.5 mL . 7.3.2 25 mL . 30 . 24 . 7.4 (5.3) 665 nm 1 cm 2 cm . 7.5 7.5.1 , , . 7.5.2 7.2.2 (7.6) . 7.6 7.6.1 3 (4.9) 10 L . 7.27.4 . 7.6.2 7.6.1 (4.9) 20 L, 50 L, 100 L( 2 g, 5 g, 10 g ) . 7.6.3 7.6.1 7.6.2 (g) . (4.7) (III) (4.8) (background absorption) . 8 8.1 . KS D ISO 7525:2012 8 4

10、02110mmm m0： (7.1) (g) m1： (7.6.3) (g) m2： (7.6.3) (g) . m12m2. m1 2m2 . . 0.5 g . 8.2 3 3 . 3 , 1 KS A ISO 5725 . 1 C21 C22 C23 (g/t) , sw , sb , r , R 0.77 0.07 0.07 0.19 0.26 3.3 0.12 0.21 0.33 0.67 13.1 0.24 1.35 0.68 3.9 9 9.1 . . 2 . 3 , . 9.2 . . 114116 . . 120 (hypophosphorus acid) (phosphin

11、e) . 9.3 (reducing mixture) . . 30 mL 10 mL , 114115 . 9.4 , KS D ISO 7525:2012 9 , . . 9.5 . 10 . a) b) c) d) e) 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS D ISO 7525:2012KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS NickelDetermination of sulfur contentMethylene blue molecular absorption spectrometric method after generation of hydrogen sulfide ICS 77.120.40