GOST EN 15478-2013 Fertilizers Determination of total nitrogen in urea《肥料 尿中氮总含量的测定》.pdf

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1、 , () INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION (ISC) EN 15478 2013 (EN 15478:2009, IDT) EN 154782013 II , 1.092 . 1.297 . , . , , , 1 84 ( ) 2 , 3 , ( 14 2013 . 44-2013) : ( 3166) 004 97 ( 3166) 004 97 KZ KG D RU UZ - 4 22 2013 . 1820- EN 15478-2013 c 01 2015 . 5 EN 15478:

2、2009 Fertilizers - Determination of total nitrogen in urea (. ). CEN/TC 260 . (en). . , , , , . (IDT). 6 EN 154782013 III , . () . , , 2014 , EN 154782013 1 Fertilizers. Determination of total nitrogen in urea 2015 01 01 1 . , . 2 . , ( ). EN 1482-2 Fertilizers and liming materials Sampling and samp

3、le preparation Part 2: Sample preparation ( . . 2. ) EN 12944-1:1999 Fertilizers and liming materials and soil improvers Vocabulary Part 1: General terms ( . . 1. ) EN 12944-2:1999 Fertilizers and liming materials and soil improvers Vocabulary Part 2: Terms relating to fertilizers ( . . 2. , ) EN IS

4、O 3696:1995 Water for analytical laboratory use Specification and test methods (ISO 3696:1987) ( . (ISO 3696:1987) , 1 , . (), () . , , , , . 3 EN 12994-1:1999 EN 12994-2:1999. 4 . , , , . . EN 154782013 2 5 5.1 (.) , ( 3- EN ISO 3696:1995). 5.2 5 , 100 K2SO4 . 5.3 , (20=1,84 /). 5.4 , NOH 500 /. 5.

5、5 , c=0,05 /, . 5.6 , , c=0,1 /, . 5.7 , c=0, 5 /. 5.8 , , c=1,0 /. 5.9 5.9.1 A: 1 37 0,1 / 1 . B: 1 1 . A B. , ; 0,5 (10 ). 5.9.2 0,1 50 95- 100 . . (-) . . 5.10 , , , , . 5.11 , . 6 6.1 , , , . . , , 1 4. , . EN 154782013 3 1 1000 ; 2 , , ( 18) ( ); 3 (PTFE) (6) ; 4 ( ) ( 18) , ( , ); 5 500 ; 6 (P

6、TFE) ( ); 7 1 1 EN 154782013 4 1 1000 ( 35); 2 , , ( 35) ( 18) , (PTFE) (5) ; 3 ( ) ( 18) , ; 4 500 ; 5 (PTFE) ; a 2 2 EN 154782013 5 1 750 1000 ; 2 , , ( 18) ; 3 ( 18) ( ); 4 ( ), ; 5 500 3 3 EN 154782013 6 1 1000 ; 2 , , ( 18) , (PTFE) (5) ( ); 3 ( ) , ( , ); 4 500 ; 5 (PTFE) ( ) 4 4 6.2 500 7 , .

7、 EN 1482-1. EN 1482-2. EN 154782013 7 8 8.1 , 0,001 , 500 10 800 . , , 30 (5.3) (5.2). 8.2 8.2.1 . , 250 25 C 20 30 . 1 , , 15 . 25 C. 8.2.2 , 500 , 30,00 0,5 / (5.7). 270 (5.9) , 3 . 250 (5.10), . , , , 120 (5.4). , . , . 15 . 150 . , , . , . 1,0 / . 8.3 , , , 20,00 0,05 / (5.5) , 0,1 / (5.6). 8.4 , , (5.11). 9 (N), , . wN, , : ,00 114220230 423211N m tVttVtw EN 154782013 8 30 0,5 / (5.7); 20 0,05 / (5.5); V1