1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS I ISO 15705 (ST-COD) KS I ISO 15705:2008 2008 11 24 http:/www.kats.go.krKS I ISO 15705:2008 : ( ) ( ) ( ) : (http:/www.standard.go.kr) ： ： 2003 12 3 ： 2008 11 24 2008-0794 ： ： ( 025097266) (http:/www.kats.go.kr). 10 5 , . KS I ISO 15705:2008 (ST-COD) Wate
2、r quality Determination of the chemical oxygen demand index(ST-COD) Small-scale sealed-tube method 2002 1 ISO 15705, Water quality Determination of the chemical oxygen demand index(ST-COD) Small-scale sealed-tube method , . . , , . 1 (Chemical Oxygen Demand ; ST-COD) . , . ST-COD 1 000 mg/L , 1 000
3、mg/L . ST-COD . COD . 1 000 mg/L . . 1 000 mg/L , 600 nm 15 mg/L, 6 mg/L ( 4.65 ) . . KS I ISO 6060 A . B . C . ( D, E KS I ISO 15705:2008 2 ). F . 2 . . ( ) . KS I ISO 5667 3, 3： KS M ISO 3696, 3 . 3.1 (chemical oxygen demand, ST-COD) ST-COD , 1 KS I ISO 6060 . 2 1 mol (Cr2O27) 3 mol (O) . 4 4.1 (I
4、I) . (Ag) . . Cr(III) , (600200) nm , 1 000 mg/L . ST-COD . 4.2 150 mg/L (44020) nm ( D, E ). 50 mg/L (34815) nm . 348 nm 440 nm (VI) . 4.3 (II) . 5 5.1 . (III) . (II) . 5.2 600 nm ( ) . 0 mg/L 1 000 mg/L , 500 mg/L ( ) 1 080 mg/L 1 086 mg/L ST-COD , 50 mg/L 121 mg/L 121 mg/L ST-COD . 440 nm (0 mg/L
5、 150 mg/L) (5.1). ( ) . KS I ISO 15705:2008 3 0 mg/L 150 mg/L , 500 mg/L ( ) 7 mg/L 8 mg/L ST-COD (C.6 ). 5.3 . . 5.4 ( ). 6 6.1 KS M ISO 3696 3 . 6.2 ST-COD ST-COD . . ( 50 mg/L, 160 mg/L, 1 000 mg/L 1 500 mg/L ) . , 1 000 mg/L 6.7 . , 10 nm . ST-COD . . (II) (C.6 ). 6.3 , c(K2Cr2O7) 0.10 mol/L( 1
6、000 mg/L ST-COD ) (29.4180.005) g (105 2 10 .) 600 mL . 160 mL (6.4.1) . 1 000 mL . 6 . 6.4 6.4.1 , (H2SO4) 1.84 g/mL 6.4.2 , c(H2SO4) 4 mol/L 500 mL (6.1) (22010) mL (6.4.1) . (1 00010) mL . . 12 . 6.4.3 c(H2SO4) 1.8 mol/L KS I ISO 15705:2008 4 (201) mL (6.4.1) (1802) mL . 12 . 6.5 (II) , c(HgSO4)
7、1.35 mol/L (801) g (II) (2002) mL . . B . 12 . 6.6 , c(Ag2SO4) 0.038 5 mol/L 2 L (6.4.1) (24.00.1) g . . . . 12 . 6.7 ( 1 000 mg/L ST-COD ) (0.500.01) mL (6.3) (7.1.2) . (0.200.01) mL (II) (6.5) (2.500.01) mL (6.6) . . , . , 1 . 1 (7.1.2) . (II) , , . , . 1 . . 6.8 6.8.1 (KHP) , C6H4(COOH)(COOK), ST
8、-COD 10 000 mg/L (1055) 2 10 (4.2510.002) g 350 mL (6.1) . 500 mL . 2 8 , . 500 mL 2 mL (6.4.2) KS I ISO 15705:2008 5 . 6.8.2 , 200 mg/L, 400 mg/L, 600 mg/L, 800 mg/L 1 000 mg/L ST-COD 20 mL, 40 mL, 60 mL, 80 mL 100 mL 10 000 mg/L (6.8.1) 4 mL (6.4.2) 1 000 mL . 2 8 , . 150 mg/L(O) , 30 mg/L, 60 mg/
9、L, 90 mg/L, 120 mg/L 150 mg/L ( C ). 2 8 , . 6.9 ( ) 6.9.1 (II) ( ; ferroin) (3.50.1) g (II) 7 (FeSO4 7H2O) 500 mL (6.1) . (7.40.1) g 1,10 1 (C12H8N4 H2O) . 1 . 6.9.2 (II) (FAS solution), 0.075 mol/L (30.00.5) g (II) 6 (NH)4Fe(SO4)2 6H2O 200 mL . (20.00.5) mL (6.4.1) . 1 000 mL . . (6.4.2) (0.50.01)
10、 mL 0.1 mol/L (6.3) 5 mL . (6.9.1) (II) . 1 (II) c (1) . VVc3.061.05.0 (1) V ： (II) (mL) 0.5 ： (mL) 0.1 ： (mol/L) 6 ： , 1 6 (II) 6 . 6.9.3 , c(AgNO3) 0.1 mol/L (17.00.1) g 1 000 mL (6.1) . . 6 . KS I ISO 15705:2008 6 6.9.4 , K2CrO4, (5 % ) (5.00.1) g (1001) mL (6.1) . (6.9.3) . . 1 . 7 7.1 7.1.1 (15
11、05) . 10 . . . 50 . 10 . 7.1.2 150 600 kPa ( 185 mm, 14 mm, 1 mm ) . . , . . . C ST-COD . 7.1.3 (2.000.02) mL . 7.2 7.2.1 7.2.1.1 KS I ISO 15705:2008 7 (60020) nm . ( C ). 7.2.1.2 . 7.2.1.3 (7.1.2) . 7.2.2 7.2.2.1 0.02 mL 10 mL , 0.02 mL . 7.2.2.2 7.2.2.3 8 KS I ISO 5667 3 . , , 2 8 . . 1 L (10.00.1
12、) mL (6.4.2) pH 2 . 5 . 20 1 . 9 9.1 ( ) 5 10 . 5 mL (6.1) . ( ). (7.2.1.1) 600 nm . 0.005 . 9.2 KS I ISO 15705:2008 8 6.7 9.3 / 6.8 . 10.1 10.2 . ST-COD (ST-COD) X , ( ) Y . , , . 10 10.1 10.1.1 . . 10.1.2 1 000 mg/L . F . (NaCl) 20 mg/L ST-COD . 10.1.3 (7.1.1) 150 . 10.1.4 (7.1.2) . 10.1.5 (7.1.3)
13、 2 mL . ST-COD 1 000 mg/L 2.00 mL . (6.1) . 10.1.6 . 10.1.7 . 10.1.8 (7.1.1) . 150 2 10 . 10.1.9 60 . . . 10.2 10.2.1 (7.2.1.1) 600 nm . (9.3) . KS I ISO 15705:2008 9 , 10 mm , . 10.2.2 , (4 000200) g (5.00.5) . 10.2.1 600 nm . . 10.2.3 10.3 . 10.3 10.3.1 . 1 mL (6.1) . 10.3.2 (6.9.1) . ST-COD . . 1
14、0.3.3 , FAS(6.9.2) . FAS (V2mL) . FAS (V1mL) . . . ( 150 mg/L) E . 11 11.1 (9.3 ) (10.2.1) . , . ST-COD 3 (mg O/L). 11.2 , ST-COD(mg O/L) . ST-COD021)(0008VVVc (2) c ： 6.9.2 (II) (mol/L) V0： (mL) V1： (II) (mL) KS I ISO 15705:2008 10 V2： (II) (mL) 8 000 ： 1/2 O2 (mg/mol) 12 ST-COD 3 . . 13 . a) b) 12
15、. c) d) 14 G . KS I ISO 15705:2008 11 A ( ) KS I ISO 6060 (COD) A.1 5 . 1 . A.2 / . A.3 . 1 . . A.4 (II) . . A.5 STCOD . ( 2 mL 3 mL .) . . 0.4 g (II) 4 . A.6 , . / . . 2 mL , . 2 mL . KS I ISO 15705:2008 12 B ( ) B.1 . , . . B.2 , , . HCN H2S , . B.3 (II) . . B.4 . . . B.5 , 150 . 150 50 %( ) . B.6 . . B.7 . . . B.8 ( .) .
