1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS M ISO 3771 KS M ISO 3771： 2012 2012 10 12 http:/www.kats.go.krKS M ISO 3771:2012 : ( ) ( ) GS () SK ( ) : (http:/www.standard.go.kr) ： ：2000 12 30 ：2012 10 12 2012-0520 ： ： ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS M ISO 3771:2012 i ii 1 1 2 1 3
2、.1 4 2 5 2 6 4 7 4 8 5 8.1 5 8.2 .5 8.3 5 8.4 5 9 5 9.1 .5 9.2 6 9.3 6 9.4 .6 9.5 6 9.6 7 10 .7 11 .7 12 7 12.1 .7 12.2 .7 12.3 .8 13 .8 KS M ISO 3771:2012 ii 2011 3 ISO 3771, Petroleum products Determination of base numberPerchloric acid potentiometric titration method . KS M ISO 3771:2012 Petroleu
3、m products Determination of base number Perchloric acid potentiometric titration method , . 1 (glacial acetic acid) . , , ( ), , . . (unused oils)： 3 45 (additive concentrates)： 5 45 ： 3 30 2 . . ( ) . KS M ISO 3696, 3 . 3.1 (Base number) wBN 1 g mg . KS M ISO 3771:2012 2 4 , , ( ) . pH-Ag/AgCl (6.2
4、) . , . 5 KS M ISO 3696 3 . 5.1 (CH3COOH), (glacial acetic acid) 5.2 (CH3-CO)2O 5.3 5.4 5.5 TRISTris(hydroxymethyl)-aminomethane (C4H11NO3) 5.6 (KHC8H4O4) 5.7 0.4 mol (Tetraethylammoniumbromide, TEABr), . ( TEABr, 0.4 mol/L) . . TEABr (0.4 mol/L) . 5.8 (Lithium chloride, LiCl) (96 % ) . 500 mL 70 g
5、, . 5.9 (5.3) 6 , (5.1) 3 , (5.4) 1 . 5.10 (HClO4) 0.1 mol/L . 5.10.1 0.1 mol/L . , , . , . 3 1 . 500 mL , , 1 L . 24 . KS M ISO 3771:2012 3 , . . . 1 2 (Amine) . 1 %a mL mL 7072 8.5 30 6062 10.2 35 57 11.8 40 a “ %” . 5.10.2 TRIS(5.5) (5.6) . . a) A： TRIS(5.5) (desiccator) TRIS ( 24 ). 0.05 g TRIS
6、0.1 mg , 60 mL . 8.18.4 9.39.6 (5.10) . (10.1) . (titer) . b) B： (5.6) (5.6) 120 2 , . 0.1 mg 0.1 g 0.2 g 60 mL (5.1) . (5.10.1) ( A ). . 5.10.3 . a) A： TRIS(5.5) (1) mol/L c0(Tris) . pacTris)Tris(014.121 Vfmc= (1) mTris ： TRIS(5.5) (mg) fc ： 100 121.14 ： TRIS(5.5) mol (molar mass) (mg/mmol) Vpa： (m
7、L) b) B： (5.6) (2) mol/L c0(KHP) . KS M ISO 3771:2012 4 pacKHP)KHP(022.204 Vfmc= (2) mKHP ： (5.6) (mg) fc ： 100 204.22 ： (5.6) mol (molar mass) (mg/mmol) Vpa ： (mL) 6 6.1 , . , . 1/5 000 . 0.1 mol/L . , . . 6.2 pH-Ag/AgCl pH ( , , ) . pH . (100 M200 M) . (diaphragm) (Sleeve diaphragm) . . Ag/AgCl .
8、, (5.7 5.8). 6.3 , . , . , . 6.4 , . 6.5 , , , . , , . 6.6 , 30 0.001 g , 30 0.000 1 g . 7 KS M ISO 3771:2012 5 , . 60 . . 8 8.1 . (ground glass sleeve) ( ) . . ( ) . . . pH . , . . . 12 . (8.3 ) . 8.2 . . 8.3 , pH (pH 4 pH 7) (buffer solution) . / pH , . pH 4 pH 7, ( pH ) (mV ) . (8.1 ). 8.4 ( , ,
9、). (oil film) . (automatic sampler) . 9 9.1 5 mL . 2 (total base number)(3.1) . KS M ISO 3771:2012 6 2 g mg 315 2.00 1 1530 1.00 3045 0.25 0.1 10 2 g 9.2 60 mL100 mL (5.9) (6.3 ) . . 9.3 8.1 . . , . . . 0.1 mol/L . . 9.4 9.4.1 (Dynamic titration) (6.1 ) . ( ). 3 . 3 1： 2： 10 L , V 0.01 mL (drift) 10
10、 mV/min dE/dt 1/6 mV/s 20 s , tmax20 s 8 mL 8 mL 15 mV (threshold) 15 mV 9.4.2 (Incremental titration) . 9.5 (8.4 ). KS M ISO 3771:2012 7 9.6 (5.9) . . (batch) . . 10 10.1 . . . . . . 1 , . 10.2 (3) g mg KOH wBN . S120BN)(1.56mVVcw= (3) V1 ： (9.6 ) (5.10) (mL) V2 ： (5.10) (mL) c0 ： (5.10) (mol/L) (1
11、) (2) 56.1 ： mol (molar mass) (mg/mmol) mS ： (g) 11 10.2 wBN 0.1 mg KOH/g . 12 12.1 12.2 12.3 . 12.2 4 20 1 . KS M ISO 3771:2012 8 4 , wBN mg KOH/g % 3 wBN 20 5 wBN 20 3 3 wBN 20 5 wBN 20 5 12.3 2 , 5 20 1 . 5 , wBN mg KOH/g % 3 wBN 20 10 wBN 20 6 3 wBN 20 15 wBN 20 15 13 . a) (KS M ISO 3771:2012) b
12、) c) (11. ) d) , e) 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS M ISO 3771:2012 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Petroleum productsDetermination of base numberPerchloric acid potentiometric titration method ICS 75.080
