GOST 8 134-2014 State system for ensuring the uniformity of measurements pH measurement method based on the Harned cells《确保测量一致性的国家系统 基于Harned室的rN测量方法》.pdf

1、 , () INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION (ISC) 8.134 2014 2014 8.1342014 II , 1.092 . 1.22009 . , , . , , - 1 - - ( -) 2 3 , ( 30 2014 . 67-) : ( 3166) 00497 ( 3166) 00497 AM BY KG MD RU TJ UZ - 4 10 2014 . 788- 8.1342014 - 1 2015 5 8.13498 - , . () - - . , , 2014 -,

2、 - 8.1342014 III 1 . 1 2 . 1 3 . 2 4 2 5 5 6 5 7 . 5 8 6 9 . 8 10 . 8 () () . 9 () , .10 () .12 () 13 () 16 () 18 () , .19 .20 8.1342014 1 State system for ensuring the uniformity of measurements. measurement method based on the Harned cells 20150701 1 () - 1,679 12,454 - 5 95 . . 2 : 8.39580 . - .

3、12.1.00485 . . 12.1.00776 . . 12.1.01979 . . - 12.2.007.075 . . 12.4.00983 . -. . 12.4.02175 . . 102767 . (II) 3-. 127775 . . 311877 . . 423377 . . 432877 . . 446177 . . 59622013 . 670972 . 914780 . 12026 76 . 2393290 . 2533682 . , 8.1342014 2 OIML R 76-120111) . - . 1. . - , 1 , - . (), - () . , ,

4、, , . 3 : 3.1 : -. 3.2 : . 3.3 : ( ) 1 -. 3.4 : , 8.395. 3.5 (): - . 4 1,679 12,454 5 95 . - Ha HpH lga= . (1) , (1) (2) HH0pH lg ,mm= (2) m0 , /, 1; mH , /, ; H . (), .1 , Pt | 2(, = 1 = 101325 )| , l-(mCl) | AgCl | Ag - Clm = 0,005; 0,010 0,015 /. , , 1) 532282008. 8.1342014 3 0 H Cl H Cl02lg()mmE

5、E km = , (3) k ln10RTkF= , R R = 8,3144621 /(); , ; F F = 96485,3383 /; mH , /, ; H , /, ; mCl , /, ; Cl , /, ; m0 , /, 1; E0 , , - ( , 0 -). E0 1. 1 E0 , 0, 5 234,13 10 231,42 15 228,57 20 225,57 25 222,34 30 219,04 35 215,65 40 212,08 45 208,35 50 204,49 55 200,56 60 196,49 70 187,82 80 178,73 90

6、169,52 95 165,11 E0 Pt | 2(, = 1 = 101325 )|l (mHCl) | AgCl | Ag, mHCl HCl = 0,01 / 1, - (3), , 2H Cl = , - HCl, . 8.1342014 4 (3) ( )0H H Cl Cl00lg lgEEmmk =+ . (4) ( )H H ClH Cl0lg lgmam - mCl. ( )H H ClCl0lgmm fmm = - Cl0m . Cl ClH Cl 0 Cl 0pH lg( ) lg( ) .mma= + (5) - l, /, - 0Cl0lg1 1, 5IAmIm=+

7、, (6) (I 0,1 /), I , /; (. 2); m0 , /, 1. (6) , I 0,1 /. 2 E0, (k) - , 0 E0, k, - 5 234,13 55,191 0,4952 10 231,42 56,183 0,4988 15 228,57 57,175 0,5026 20 225,57 58,168 0,5066 25 222,34 59,160 0,5108 30 219,04 60,152 0,5150 35 215,65 61,144 0,5196 40 212,08 62,136 0,5242 45 208,35 63,128 0,5291 50

8、204,49 64,120 0,5341 8.1342014 5 , 0 E0, k, - 55 200,56 65,112 0,5393 60 196,49 66,104 0,5448 70 187,82 68,089 0,5562 80 178,73 70,073 0,5685 90 169,52 72,057 0,5817 95 165,11 73,049 0,5886 5 (. .1 ), (. .2 ), - : - OIML R 76 -11); - 0,15 ; - 50 85 , 0, 2 %; - 5 1100 - 20 ; - 0,0006 %. 6 6.1 : - (20

9、 5) ; - 80 %; - 96 104 ; - 207 244 ; - (50 1) . 7 7.1 - 12.1.007 12.4.021, 12.1.019 12.2.007.0. 7.2 , , 12.1.004. 7.3 , 2). 1) 532282008. 2) 50.01294. 2 8.1342014 6 8 8.1 8.1.1 . -, . 8.1.2 ( ) , . (pH 4,00). 8.1.3 , . 8.1.4 , - 1Clm= 0,005 /, 2Clm = 0,01 /, 3Clm = 0,015 /. . - , . 8.1.5 . . . - . 8.1.6 . . - . . 8.1.7 . - . - . 8.2 8.2.1