GOST 32743-2014 Food additives Method of potentiometric determining of citric acid and citric ions in the complex food additives《食品添加剂 复合食品添加剂中柠檬酸和柠檬离子的电位测定方法》.pdf

1、 , () INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION (ISC) 32743 2014 - 2015 327432014 II , - 1.092 . 1.2 2009 . -, . , , , 1 - , ( ) 2 3 , (- 25 2014 . 45-2014) : ( 3166) 004 97 ( 3166) 004 97 AM KZ KG RU TJ UZ 4 19 - 2014 . 904- 327432014 01 2016 . 5 - , . () - - . , , 2015 -,

2、 - 327432014 1 - Food additives. Method of potentiometric determining of citric acid and citric ions in the complex food additives 2016 01 01 1 , - (330) (331), (332) (333) , - - 110-3 1102 /3. 2 - : 12.0.00490 . - . 12.1.00491 . . 12.1.00588 . - 12.1.00776 . . - 12.2.007.075 . . 12.4.00983 . . . 12

3、.4.02175 . . 12.4.10383 . , . OIML R 76-12011 . - . 1. . 9082004 . 177074 ( 104283, 478880) . -, , , . 420477 . . 423377 . . 423477 . . 432877 . . 670972 . 1202676 . 1491983 , . 2533682 . , 327432014 2 25794.183 . - 2775288 - , -. 2849890 . . 2922791 ( 835-181) . . 1. - , 1 , - . (), - () . , , , ,

4、. 3 908. 4 4.1 12.1.007 12.4.103. 4.2 , , - 12.4.021. 4.3 12.2.007.0. 4.4 12.0.004. 4.5 12.1.004 12.4.009. 4.6 , - 12.1.005. 5 5.1 - - - ( ) . 687 ( ) 6573-( -) + 3+ ( ). (1) - - . (1). -, -, -, -. - . , - -. - 100- - ( = 10-2), 10- - ( = 10-1), 60- - ( = 0,6). - ( = 2). 5.2 5.2.1 : - . 15 25 ; - .

5、5 35 ; - 220 ; 327432014 3 - . 49 51 ; - . 5,5 7,5 . 5.2.2 , . 5.3 , , , - OIML R 76-1 0,0005 . OIML R 76-1 0,01 . 0 100 , 1 28498. - 27752. - 1010 0 14, - 999,9 999,9, 1999 1000, 1000 1999, - 0,05 - 1,0. - ( ) - - 110-5 110-1 /3, (350 250) 110-3 /3, - (20 5) 2108 . - 0 2104 , (20 5) 0,3 3,5 3/. 149

6、19. . 1100(500, 1000)2 1770. ()-1100, ()-1250 25336. 4111 29227. 11001 1770. . 12026. 4234. 4233. 2- ( ) 99 %. 4328, . . 1,83 /3 4204, . . 6709. , , , , , - . 5.4 5.4.1 (Na3657) = 0,1 / 100 2,94 2-, , - 100 . 5.2.1 1 . 5.4.2 20 250 160,00 , , 327432014 4 500 . , 5 10 . 20 . - . 5.2.1 1 . 5.4.3 250 /

7、 100 25,00 , , 100 . 5.2.1 1 . 5.4.4 (1/2 H2SO4) = 0,1 /3 (1/2 H2SO4) = 0,1 /3 25794.1. 5.2.1 6 . 5.4.5 (NaOH) = 0,1 /3 (NaOH) = 0,1 /3 25794.1. 5.2.1 6 . 5.4.6 (Na3657) = 0,1 /, 0,01 /, 0,001 /3, 0,0001 /3 0,00001 /3. - (Na3657) = 0,1 /, 5.4.1, . - - 6 . , - (1/2 H2SO4) = 0,1 /3 (. 5.4.4). 5.4.7 (NaCl) = 0,005 /3 100 0,2923 , , 1000 . 15 25 - 1 . 5.4.8 - (