1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS D ISO 4140 KS D ISO 4140: 2008 2008 6 13 http:/www.kats.go.krKS D ISO 4140: 2008 : () ( ) () ( ) : (http:/www.standard.go.kr) : :2003 12 29 :2008 6 13 2008-0276 : : ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS D ISO 4140: 2008 Ferrochromium and ferr
2、osilicochromium Determination of chromium content Potentiomentric mehtod 1979 1 ISO 4140, Ferrochromium and ferrosilicochromium Determination of chromium content Potentiometric method , . 1 . . 2 . . KS D ISO 3713, 3 , . . . 2 (II) . . . 2 (II) , . . OHFeVO2HFeVOO7H6Fe2Cr14H6FeOCr232222332272+KS D I
3、SO 4140: 2008 2 O3H2Mn5NO6H2MnO5NO2HMn5VOOHMnO5VO2234222242+4 . 4.1 4.2 4.3 (NH4)2S2O8 4.4 4.5 ( 1.7 g/mL) 4.6 ( 1.42 g/mL) 4.7 ( 1.14 g/mL) 4.8 50 %(V/V) 400 mL ( 1.84 g/mL) 500 mL , 1 000 mL . 4.9 40 %(V/V) 600 mL ( 1.19 g/mL) 400 mL . 4.10 5 g 1 000 mL . 4.11 2.5 g 100 mL . 4.12 1 g 100 mL . 4.13
4、 150 415 . 8 mesh , . , 105 . KS D ISO 4140: 2008 3 4.14 2 (II) 0.34 mol/L(0.17 N) 4.14.1 2 (II) 65 g 1 000 mL 500 mL . 100 mL (4.8) , . 4.14.2 (1.0000.000 2) g (4.13) 600 mL , 100 mL 30 mL (4.8) 300 mL . 7.2.3 7.2.4 . 2 (II) T(g/mL) . T150.353V V1: 2 (II) (mL) 5 . 5.1 , , , 40 mL . 5.2 600 mL . 5.3
5、 pH . 5.4 / 5.5 6 KS D ISO 3713 . 7 7.1 KS D ISO 4140: 2008 4 (0.50.000 2) g . 7.2 7.2.1 (4.1) 10 g 7 g 3 g . , ( 6 ). , . (5.2) . 150 mL . . 40 mL (4.8) . , . 300 mL . 7.2.1.1 ( 0.5 % C) (7.1) (5.2) . 25 mL (4.8) , 1) 20 . (4.5) 5 mL . 40 mL , (4.6) 2 . 400 mL . 7.2.1.2 ( 1 % C) (7.1) 10 15 mL , 15
6、 mL (4.6) 1 . . 20 mL (4.8) 5 mL (4.5) , . 40 60 mL 600 mL . . 300 mL . 7.2.2 (4.10) 20 mL (4.11) 3 , 8 g (4.3) 102) . 0.5 mL (4.9) , 3)5 . . 7.2.3 7.2.1 (4.5) 10 mL , 7.2.1.1 7.2.1.2 5 mL . (5.5) . (5.4) (5.3) . 7.2.4 200 mV4) 2 (II) (4.14) . 2 (II) . 1) , . 2) 5 0.5 g . 3) 0.5 mL , . 4) 31 %(m/m)
7、50 mL 2 (II) . 68 %(m/m) 100 mL 2 (II) . KS D ISO 4140: 2008 5 7.2.5 (4.11) 1 5)1 . (4.12) 1 2 . 0.5 g (4.4) . 2 (II) . . 8 (wt %) . mVVT )(10032 T : 2 (II) (4.14) (g/mL) V2 : (Cr V) 2 (II) (4.14) (mL) V3 : (V) 2 (II) (mL) m : (7.1) (g) 9 95 % 70 %(m/m) 0.20 %(m/m) . 10 . a) b) c) d) 5) . . 135513 7017 (02)60094114 (02)600948878 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS D ISO 4140: 2008 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Ferrochromium and ferrosilicochromium Determination of chromium content Potentiometric method ICS 77.100
copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1