GOST 32471-2013 Urea for industrial use Potentiometric method of buffer capacity determination《工业用尿素 缓冲容量测定的电位滴定法》.pdf

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1、 , () INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION (ICS) 32471 2013 () 2014 324712013 II , 1.092 . 1.22009 . , . , , , 1 - , , ( ) 2 527 3 , ( 5 2013 . 61-) : ( 3166) 00497 ( 3166) 004 97 AM BY KG RU TJ 4 50568.5-93 () . . 5. 22 2013 . 1843- 324712013 1 2015 . 6. , . () . , .

2、2014 , . 324712013 1 () Urea for industrial use. Potentiometric method of buffer capacity determination 20150101 1 () (Hl) =0,05 /3 0,3 0,8 3. 2 : 8.135-2004 . - - 2- 3- . . 12.0.00490 . . 12.1.00491 . . 12.1.00588 . - 12.1.00776 . . 12.1.01979 . . 1 12.4.00983 . . . 12.4.02175 . . 177074 . , , , .

3、 20812010 . 311877 . 419976 10-. 432877 . 670972 . 73282001 . 9293-74 . 241042001 . 2 2533682 . , 1 12.1.0192009 . . 2 53228-2008 . 1. . 324712013 2 25794.183 . - 28498-90 . . 2925191 . . I. , 1 , . (), () . , , , , . 3 () . (Hl) =0,05 /3, , 100 1000 3 , 8 6 (200,5) . 4 , , : 4.1 - , 0,01 0,05 . (II

4、) 200 24104. (III) 1 24104. F1 F2 7328. 0 55 0,1 28498. 122250,1 29251. 1(2) 5002 , 1(2) 10002 1770. -1 (2)600 25336. 1(3)1002, 1(3)5002 1770. - 8.135. 4.2 3118. 4328. 10- 4199. 9293 ( ). . 6709 , . 324712013 3 5 2081. 6 : 12.1.007. 12.1.019. , . , , - 12.4.021; , 12.1.005. 12.1.004 12.4.009. 12.0.0

5、04. 7 , . , , , . 8 : - (200,5); - 80 % 25; - (500,4) ; - (22022) . 9 : 9.1 9.1.1 , (Hl) =0,05 /3 25794.1. 9.1.2 , (NaOH)=0,05 /3 25794.1. 9.1.3 , (NaOH)=0,5 /3 25794.1. 9.1.4 10-, 0,01 /3( ) (3,81 0,01) (Na2B4O7102) . 1000 3, . . 20 9,22. 9.1.5 (10,210;01) (64COOK) 500 3 70,90 3 (NaOH) =0,5 /3. 100

6、0 3, . 324712013 4 . 20 5,40. 9.2 - - (200,5) , . 9.1.4 . 9.1.5. , . 9.1.4, , - 8.135 9,18. 10 (500,05) , 300 3 . 500 3, . . - (205) , . 8,5, 0,25 3 (Hl) =0,05 /3 , 5,5. 510 . 8,5, 0,25 3 (NaOH)=0,05 /3, 510 , 8,5. , , , , 5,5. 11 : , ( 10 = 0,1 ), (Hl) =0,05 /3 ( 10 = 0,5 3). . (Hl) =0,05 /3 , 8 6. . ( ) , , 0,1 3 (Hl) =0,05 /3. 12 , %, 10 % =0,95. 13 , , : , 3 P=0,95, , 3 (Hl) =0,05 /3; 324712013 5 , 3 (Hl) =0,05 /3, = 0,95. = (1) , . : P=0,95, , , .

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