GOST 8 639-2014 State system for ensuring the uniformity of measurements Measuring electrodes for oxidation - reduction potential determination (ORP) Verification procedure《确保测量一致性.pdf

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1、 , () INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION (ISC) 8.639 2014 - 8.6392014 II , - 1.092 . 1.22009 . , -, . , , - 1 - - ( ) 2 3 , - ( 30 2014 . 67- ) : - ( 3166) 00497 ( 3166) 00497 - AM BY KG MD - RU TJ UZ UA 4 10 201 . 787- 8.6392014 - 1 2015 . 5 - , - . () - - . , , 201

2、4 -, 8.6392014 1 - State system for ensuring the uniformity of measurements. Measuring electrodes for oxidation reduction potential determination (ORP). Verification procedure 20150701 1 , - () ( ), - . 1, 2. 2 : 12.2.007.075 . . 177074 . , , , . 423477 . . 670972 . - , 1 , - . (-), () -. , , , , .

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4、605 3) ) FT-216-25 ( - 0 100 , 0,2 ) 1770 6709 7.5, 8.3.1, . . . . 4234 5.2 , - . 5.3 1). 6 6.1 , 12.2.007.0. 8.6392014 3 7 7.1 : - (20 5) ; - 80 %; - 86 106,7 ; - 207 240 ; - (50 1) . 7.2 , . 7.3 . 7.4 , - 01 . 7.5 - . 7.6 , .1 - . 8 8.1 : ; . 8.2 - ( ) . , - . 1 . . 8.3 8.3.1 - 8.3.1.1 - 011 . 3 (

5、. .1 ). - 3 1 (25 0,2) . 6 , - . 3 5, 7 4. 7 6. 9 . 5 3 5 (25 0,2) . 8 U 5 6. _ 1) 50.2.00694 8.6392014 4 Eh, , Eh = U + Ec (1) U , ; Ec , , . Eh, , Eh = Eh Eh(2) Eh Eh - 011 25 , (. .1 ). , Eh 3 . 5 7 - 8.3.1.1. . 8.3.1.2 - 012 . 3 (. .1 ). - 3 1 (25 0,2) . 6 , - . 3 5, 7 2. 7 5. 9 . 5 3 5 (25 0,2)

6、 . 8 U 5 6. , Eh (1). Eh (2). , Eh 3 . 5 7 - 8.3.1.2. - . 8.3.1.19 , 3 . 9 9.1 . 9.2 1). - . 9.3 - 1). 1) 50.2.00694 8.6392014 5 () - - 01 .1 - 01 : 01 1 012. .1. .1 - -01 - - , -, 1 3- , Eh - 25 , 011 - (KH2PO4), (Na2HPO4) ( 1); (12H10O4) ( 2) 3,388 3,533 4,0 (298 3) 012 2 KH3(2O4)222 ( 1); (12H10O4) ( 2) 12,610 4,0 (605 3) 1 - 011 - 1 3 = (6,86 0,01) 25 . - 1 012 - 1 3 = (1,65 0,01) 25 . .2 - .2.1 2- - - 6709 ( ) 5 104 1. - 2- 1770 ( ). 6 ( . - 011) , .

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