GOST R 55331-2012 Milk and milk products Titrimetric method of calcium content determination《奶和奶制品 滴定法测定氮含量》.pdf

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3、. . 2922791 . . 1. 2925191 ( 385-184) . . 1. - - , 1 , - . - , , (). -, , , , , . - , , , , .3 , - 1, 52738.4 , - , - .5 , , 53228 - c177 2. , 0,3 , c177 0,6 . - 27752. 0 100 - 1 28498. , 0 100 c177 2 ., 1400 ./. 1-1-1-2-0,01 29251. 1-50-2, 1-100-2 1770. 1-1-2-5, 1-1-2-10, 1-2-2-20 29227. -1-25-0,2

4、1770. 1(3)-100-2 1770. -1-250-24/29 25336. -1-50, -1-500 25336.2 553312012 -75-110 25336. (), . -I 12026. . 3760. 1- 5712, , . - (KMnO4) = 0,02 /3. 4204. , 120 200 /3. 61, 20 %. , 0,5 /3. 6709. 96 %. , -.6 26809 . , (4 c177 2) 1 .7 7.1 500 3, - (20 c177 2) . , - (40 c177 2) , (20 c177 2) .7.2 200 /3

5、 100 3 (20,00 c177 0,01) , - . - . (20 c177 5) 1.7.3 120 /3 100 3 (12,00 c177 0,01) , - . - . (20 c177 5) 1.7.4 . - 250 3 (34,60 c177 0,01) , 100 3 - . (20 c177 2) .7.5 0,5 /3 100 3 (0,050 c177 0,001) , - (96 % ). . (20 c177 5) - 3 .3 5533120127.6 20 % 100 3 20 3 . . - . (20 c177 5) 3 .7.7 (I) 25 %

6、- 1:1. (20 c177 5) 3 .7.8 (II) 100 3 2 3 25 %. . - . (20 c177 5) 3 .7.9 20 3 , - , 80 3 . . (20 c177 5) - 3 .7.10 (KnO4) = 0,02 /3 - . . (20 c177 5) 1 .8 :- (20c177 5) ;- (55c177 25) %;- (96c177 10) ;- .(50c177 5) ;- .(220 c177 10) .9 9.1 50 3 (20,00 c177 0,01) . 200 /3(7.2), - . (30 c177 1) . , .9.

7、2 5 3, 9.1, 53 120 /3(7.3), 2 3 (7.4), 2 (7.5) 23 (7.6). .9.3 9.2 (I) (7.7) - . (7.6) - 4 .9.4 ( 9.3) 20 3 1400 ./ 10 . , .4 553312012 , - 5 3 (II) (7.8). 1400 ./ 5 - . .9.5 2 3 (7.9)53 . . , 0,02 /3(7.10) . - (58 c177 2) . , , 0,01 3.9.6 , 20 3- .10 10.1 , %, =0 004100,( ),VVfmc45(1) 0,004 , 1 3 0,02 /3, /3;V 0,02 /3, - , 3;V 0,02 /3, - , 3;f , ( 1);m , ;100

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