KS I ISO 22719-2009 Water quality－Determination of total alkalinity in sea water using high precision potentiometric titration《水质 用高精度电位滴定仪测定海水总碱度》.pdf

1、 KSKSKSKS KSKSKSK KSKSKS KSKSK KSKS KSK KS KS I ISO 22719 KS I ISO 22719 :2009 2009 12 18 http:/www.kats.go.krKS I ISO 22719:2009 : ( ) ( ) ( ) : (ISO/TC147) () ( ) () () : (http:/www.standard.go.kr) ： ：2009 12 18 2009-0831 ： ：(ISO/TC147) ( 02-509-7266) (http:/www.kats.go.kr). 10 5 , . KS I ISO 2271

2、9:2009 Water qualityDetermination of total alkalinity in sea water using high precision potentiometric titration 2008 1 ISO 22719, Water qualityDetermination of total alkalinity in sea water using high precision potentiometric titration , . . . . . 1 (open-cell) . mol/ kg . 30 40 (2 000 mol kg 1 2 5

3、00 mol kg 1 ) . 2 . . ( ) . KS I ISO 56671, 1： 3 . 3.1 A T 1 kg (proton donor) (proton acceptor) (25 , K 10 4.5 ) KS I ISO 22719:2009 2 5 . 3.2 S 15 , K 15 , KCl 32.435 610 3 (KCl) 6, p.12 , Oceanographic Tables and Standards, Sidney, B.C., Canada, September 1-5, 1980 UNESCO/ICES/SCOR/IAPSO Joint Pa

4、nel , . , . 4 2 . . ( ) pH 3.0 pH 3.5 0 . pH - , (EMF) . 5 5.2 5.4 1 . . 5.1 5.1.1 5.1.1.1 , 0.01 g 200 g . 5.1.1.2 , , 125 mL . 5.1.2 , , . . . 0.4 . . 5.2 5.2.1 , 57 mm , 200 mL , ( 1) KS I ISO 22719:2009 3 5.2.2 , 0.01 , 0.05 , . 5.2.3 , 0.05 . 5.2.4 , 38 mm8 mm . 5.2.5 , 5.3 EMF- 5.3.1 , 0.01 mV

5、 . 5.3.2 , EMF . pH (0.1 mV) . 5.3.3 pH pH . , pH 0.1 90 % 10 . , pH . pH . A T . . 5.4 (0.001 mL) . , . . 5.4.1 , (50.002) mL , (anti-diffusion tip) . 5.4.2 , 0.1 , . 5.5 5.5.1 , , . 2 ; . . 500 mL , 6 mm . 500 mm (rubber bulb) . . 500 mm (pinch clamp) . . KS I ISO 22719:2009 4 5.5.2 5.5.3 , (6.2).

6、 6 6.1 , 0.1 mol/kg 0.6 mol/kg , ( 7 ) , 0.02 % . ( , KS M ISO 758) 0.02 % . . , . . (CRM) (B.1.3 ). 6.2 , 18 M cm . 7 7.1 (KS I ISO 56671 ). . , . 0.02 % . ( ). . 7.2 1 . . , . . ( ) . . . , pH . , ( ). KS I ISO 22719:2009 5 1 6 2 7 3 8 4 9 EMF 5 HCl/NaCl 10 1 7.3 7.3.1 , . , . 7.3.2 (5.5.1) ; . ,

7、20 mL . (5.1.1.2) , (5.1.1.1). 0.01 g . 38 mm , 250 mL . . . 7.3.3 0.000 mLKS I ISO 22719:2009 6 , 0.1 . (5.1.2) . . 38 mm , 250 mL . 7.4 ( ) , . . 0.1 . , , . . , pH 3.5 . . , . CO 2 10 . pH 3.0 0.05 mL (20 ) . , 0.001 mL, EMF 0.01 mV, 0.01 . 7.5 , . . 3 . , . 7.6 , , , . 2 . , . . (6.2) , . . KS I

8、 ISO 22719:2009 7 , (6.2) . , 5 mL . , (6.2) (6.2) ( ) . 5 mL , (6.2) . , . . , . . . (filling hole) , . . 8 8.1 . pH 3.0 3.5 . 0 , HSO 4 HF . A.2.4 . 8.2 8.2.1 8.2.1.1 S 33.923 T 24.25 m 0140.32 g C 0.100 46 mol kg 1 acid1.023 9 g/mL , EMF 1 . KS I ISO 22719:2009 8 1 V mL EMF E V T 3.500 0.186 07 2

9、4.25 3.550 0.188 93 24.26 3.600 0.191 50 24.27 3.650 0.193 85 24.25 3.700 0.196 01 24.25 3.750 0.198 00 24.24 3.800 0.199 87 24.23 3.850 0.201 60 24.25 3.900 0.203 22 24.25 3.950 0.204 74 24.24 4.000 0.206 18 24.22 4.050 0.207 53 24.23 4.100 0.208 80 24.25 4.150 0.210 02 24.26 4.200 0.211 21 24.27 4

10、.250 0.212 33 24.26 4.300 0.213 41 24.26 4.350 0.214 46 24.26 4.400 0.215 46 24.25 4.450 0.216 41 24.25 4.500 0.217 33 24.25 4.550 0.218 21 24.25 8.2.2 A T 2 263.54 mol kg 1E o 0.394 28 V 8 , (A.2.4) . 8.2.3 A T2 260.10 mol kg 1 ( ) E o0.394 401 V KS I ISO 22719:2009 9 2 V mL EMF E V pH 3.500 0.186

11、07 3.530 4 3.550 0.188 93 3.481 9 3.600 0.191 50 3.438 4 3.650 0.193 84 3.398 5 3.700 0.196 01 3.361 9 3.750 0.198 00 3.328 2 3.800 0.199 86 3.296 5 3.850 0.201 59 3.267 2 3.900 0.203 21 3.239 8 3.950 0.204 73 3.214 0 4.000 0.206 17 3.189 6 4.050 0.207 53 3.166 7 4.100 0.208 80 3.145 2 4.150 0.210 0

12、2 3.124 5 4.200 0.211 20 3.104 4 4.250 0.212 33 3.085 4 4.300 0.213 41 3.067 1 4.350 0.214 46 3.049 3 4.400 0.215 45 3.032 3 4.450 0.216 41 3.016 2 4.500 0.217 32 3.000 6 4.550 0.218 20 2.985 7 KS I ISO 22719:2009 10 A () A.1 1 kg (proton donors)( , K 10 4.5 ) (proton acceptor)(25 , K 10 4.5 ) ( 5).

13、 HS NH SiO(OH) 2PO HPO OH B(OH) 2CO HCO 3 3 2 4 2 4 4 2 3 3 T A PO H HF HSO H 4 3 4 F - - - - - (A.1) , H + F , , . , . A.2 A.2.1 R (Faraday constant) F : R8.314 510(70) J K 1mol 1F96 485.309(29) C mol 1 , . A.2.2 A.2.2.1 T () S ( ) V (mL) m 0 (g) C (mol/kg) acid (g/mL) E EMF(V) A.2.2.2 m (g) K S K

14、F KS I ISO 22719:2009 11 S T (mol/kg) F T (mol/kg) A T (mol/kg) E o (V) A T , E o A T E o A.2.3 (A.2) . PO H HF HSO H 4 3 4 F HS NH SiO(OH) 2PO HPO OH B(OH) 2CO HCO 3 3 2 4 2 4 4 2 3 3 (A.2) . , ( ) (A.3) . PO H HF HSO H C 4 3 4 F H HS NH SiO(OH) 2PO HPO OH B(OH) 2CO HCO 3 3 2 4 2 4 4 2 3 3 (A.3) .

15、C(mol/ kg) m m 0 , m m mC A m 0 T 0 H C (A.4) , . , . (A.3) (A.4) , (A.5) . PO H HF HSO H 4 3 4 F 0 T 0 m m mC A m HS NH SiO(OH) 2PO HPO OH B(OH) 2CO HCO 3 3 2 4 2 4 4 2 3 3 (A.5) (A.5) . pH 3.0 3.5 , CO 2 , (A.5) (A.6) . HF HSO H 4 F 0 T 0 m m mC A m (A.6) A.2.4 K S K F S T F T S T , 9, 5 . , m 0 . 9, 5 .