1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS M 8268 T( )KS M 8268:2012 2012 12 28 http:/www.kats.go.krKS M 8268:2012 : ( ) ( ) ( ) : (http:/www.standard.go.kr) : :1979 12 13 :2012 12 28 2012-0817 : : ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS M 8268:2012 T( ) Eriochrome black T 1 T1)( T .) .
2、 2 . . ( ) . KS M 0009, KS M 0024, KS M 8001, 3 3.1 T , . 3.2 KS M 0024 1 620 cm 1, 1 560 cm 1. 1 500 cm 1, 1 340 cm 1, 1 200 cm 1, 1 140 cm 1, 1 050 cm 1, 740 cm 1 660 cm 1 . , KS M 0024 7.2 a)( ) . 1 . 1) C.I. 11 . OHOH N=N SO3NaNO2C20H12N3NaO7S FW: 461.39 KS M 8268:2012 2 1 4 T 5. 1 . 1 (10 mg/L,
3、 pH 9.0) (105 C) ( )( ) 0.4 7.0 % 15.0 % 20.0 % 5 5.1 0.100 g 140 mL (200 mL) 20 mL . 20 mL 2)( 5.3 ). 5.2 2) , . (cm 1) (%) KS M 8268:2012 3 0.05 g 100 mL , 20 mL 2)( 5.6 ). 5.3 (10 mg/L, pH 9.0) 5.1 10 mL (200 mL) . 20 mL (100 mL) KS M 8001 6.28 ( ) a)( ) (pH 9.0)3)10 mL . 10 mm 620 nm 0.40 . 5.4
4、(105 C) KS M 0009 5.1.4 a)( 1: ) . 0.1 mg 1 g 4 , 70 mg ( 5.5 ). 5.5 ( )( ) 0.1 mg 5.4 0.5 g “ 0.5 mL (2 )”. 1 75 mg 100 mg . 5.6 10 mL 0.01 mol/L 0.05 mL, 0.05 mL 5.2 0.05 mL (A ). A 0.01 mol/L EDTA2Na 0.10 mL . 6 . 7 . a) “ T” “ ” b) , c) d) e) 3) pH pH 8.98 pH 9.02 . T() 153787 1 92 3(16) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS M 8268:2012 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Eriochrome black T ICS 71.040.30