GOST 32044 1-2012 Feeds mixed feeds and raw material Determination of mass fraction of nitrogen and calculation of mass fraction of crude protein Part 1 Kjeldahl method《饲料 混合饲料和原料 .pdf

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1、 , () INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION (ISC) 32044.12012 (IS 5983-1:2005) , , . 1. (ISO 5983-1:2005, MOD) 2014 32044.12012 (ISO 5983-1:2005) II , - 1.092 - . 1.22009 . -, . -, , , 1 - - ( ) 2 ( 004) 3 , ( 3 2012 . 54-) : ( 3166) 00497 ( 3166) 00497 AM BY KZ KG RU U

2、Z 4 ISO 5983-1:2005 Animal feeding stuffs. Determination of nitrogen content and calculation of crude protein content. Part 1: Kjeldahl method ( . . 1. ). ISO 5983-1:2005/Cor.1:2008, , - - . - . , , 1.5, . , . - . , - , , , , . , , , -. 32044.1-2012 (ISO 5983-1:2005) III - . . (en). (MOD) 5 28 2013

3、. 305 32044.12012 (ISO 5983-1:2005) - 1 2014 . 6 ( ) - . - , -. , 2014 -, - 32044.1 2012 (IS 5983-1:2005) 1 , , . 1. Feeds, mixed feeds and raw material. Determination of mass fraction of nitrogen and calculation of mass fraction of crude protein. Part 1. Kjeldahl method 20140701 1 , - - . 1 . 2 . 2

4、 -: 177074 ( 104283, 478880) - . -, , , . 414574 . . 4165-78 . II 5-. 420477 . . 432877 . . 5725-12003 ( ) . 1. 5725-22003 ( ) - . 2. - 583375 . . 670972 . 13496.080 , . 1653979 . (II) . 1830087 . 1870478 . 2166976 . 241042001 . 25794.183 . - 312182003 ( 6498:1998) , , . - (ISO 6498:1998, MOD) 32044

5、.12012 (ISO 5983-1:2005) 2 - , 1 , , . (), - () . , , , , . 3 21669 : 3.1 : , - , 6,25. 4 , , - , , 6,25. 5 5.1 4145. 5.2 : 4.2.1 4.2.2. 5.2.1 (II) (uO) 16539. 5.2 2 5- (II) (CuS45H2O) 4165. 5.3 4204 (H2SO4) = 18 /3, 20(H2SO4) = 1,84 /3. 5.4 . 5.5 5833. 5.6 : 5.6.1 5.6.2. 5.6.1 114 (N) 103,6 /. 5.6.

6、2 282 (N) 137,2 /. - . 5.7 4328, w (NaOH) = 33 %. 5.8 : 5.8.1 5.8.2. 5.8.1 - (H2SO4) = 0,05 /3 (H2SO4) = 0,125 /3. 5.8.2 18704, (H3BO3) = 40 /3. 5.9 : 5.9.1 - (NaOH) = 0,1 /3 (NaOH) = 0,25 /3. 5.9.2 - (1/2H2SO4) = 0,05 /3(0,1) (H2SO4) = 0,125 /3. 5.10 , 4,45,8 . . 2 1 1000 3 18300 95 %. 5.11 . 5.12

7、, , - 5 7 , . 32044.12012 (ISO 5983-1:2005) 3 1 . . 2 , (. 5.6), . 3 6709. 4 - . 5 (1/2 H2SO4) = 0,05 /3 - 25794.1. 6 , , : 6.1 24104 200 - 0,001 . 6.2 , . 6.3 -. 6.4 1(2, 3, 4) - 25(250, 500) 1770. 7 13496.0. , - . , . 8 31218. 9 9.1 . 0,005 0,2 , 0,2 . - 0,5 2,0 , 2,5 5,0 . 9.2 9.2.1 . - , . - ( 8

8、00 3). 15 (. 5.1) : 0,3 (. 5.2.1) 0,9 1,2 5- (. 5.2.2). 25 3 (H2SO4) = 18 /3(. 5.3) 6 12 3 - . , - . 30 45 . - . -. 32044.12012 (ISO 5983-1:2005) 4 . , (. 5.4). - , , . . , . , . - , , , . , ( - ), 2 . . -, . 9.2.2 9.2.2.1 250 350 3 . , . . (. 5.12). -. (. 5.1). 9.2.2.2 9.2.2.3. 9.2.2.2 25 3 (. 5.8.1) (H2SO4) = 0,05 /3 (H2SO4) = 0,125 /3, . 100 150 3 (. 5.10). 9.2.2.4. 9.2.2.3