KS D ISO 11427-2006 Determination of silver in silver jewellery alloys－Volumetric (potentiometric) method using potassium bromide《银合金首饰中含银量的测定 溴化钾容量法(电位滴定)》.pdf

1、 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2006 1 18 http:/www.kats.go.krKS D ISO 11427 ( ) KS D ISO 11427： 2006 (2011 )D ISO 11427： 2006 : ( ) ( ) ( ) : (http:/www.standard.go.kr) ： : 2006 1 18 : 2011 12 29 2011-0704 ： ： ( 02- 509-7274) (http:/www.kats.go.kr). 10 5 , . ICS 39.060 KS ( ) D ISO 11427

2、 2006(2011 ) Determination of silver in silver jewellery alloys Volumetric (potentiometric) method using potassium bromide 1993 ISO 11427 Determination of silver in silver jewellery alloysVolumetric (potentiometric) method using potassium bromide . 1. KS B ISO 9202 . , , , . 1. KS B ISO 9202 . 2. .

3、 . KS B ISO 9202： 2006 3. . 4. . 4.1 33 %( ), 20 1.2 g/cm3, . 4.2 c (KBr) 1 mol/L 105 11.90 g 1 000 mL . 4.3 10 g 1 000 mL . 4.4 999.9 (0/00) 5. 5.1 (motor-driven plunger) 0.05 mL , . 5.2 Hg/Hg2SO4 D ISO 11427： 2006 2 . 6. . , . 7. 7.1 300 500 mg 0.01 mg . 7.2 7.2.1 300 500 mg (4.4) 0.01 mg 3 . 5 mL

4、 (4.1) . , 100 mL (5.2) . 2. (7.1) 20 mg . 7.2.2 95 %( ) (5.1) (4.2) . (4.2) 0.05 mL . 3. (5.2) , . 7.2.3 F . sAgVmF = mAg： (mg) Vs： (mL) 0.05 %( ) . F . . 7.3 7.3.1 300 500 mg 0.01 mg (7.1) . 5 mL (4.1) . . 7.3.2 (Pd) (Pd) (4.3) . 100 mg 50 mL . 7.3.3 . . . 8. 8.1 8.1.1 F(7.2.3) mL mg D ISO 11427：

5、2006 3 , mAg(mg) . mAg FVs 8.1.2 (0/00) wAg . 3sAgAg10=mmw ms： (7.1) (mg) 8.2 2 (0/00) 1 . . 9. . a) , , b) c) d) (0/00) e) , f) g) h) i) ( ) 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KSKSKSSKSKS KSKS SKS KSKS SKSKS KSKSKSKorean Agency for Technology and Standards http:/www.kats.go.kr KS D ISO 11427： 2006 Determination of silver in silver jewellery alloysVolumetric (potentiometric) method using potassium bromide ICS 39.060