KS M 1019-2009 Urea standard material《尿素》.pdf

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1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS M 1019 KS M 1019:2009 2009 11 30 http:/www.kats.go.krKS M 1019:2009 : ( ) ( ) SK R&D center () () () ( ) : (http:/www.standard.go.kr) : :1989 12 23 :2009 11 30 2009-0741 : : ( 02-509-7300) (http:/www.kats.go.kr). 10 5 , . KS M 1019:2009 Urea standard mate

2、rial 1 . 2 . . ( ) . KS A ISO 5725 1, ( ) 1: KS M 0001, 3 KS A ISO 5725 1 KS M 0001 . 4 KS M 0001 . 5 5.1 . , , , . 5.2 NH2C O (NH2)2CO FW: 60.06 NH26 8. 1 . KS M 1019:2009 2 1 (%) 99.9 () 133.0134.0 (%) 0.020.002 (%) 0.020.003 1.870.01(220 nm) 0.0360.001(280 nm) 0.0060.001(461 nm) (%) 0.0010.000 7

3、(%) 0.000 10.000 05 pH (10 w/v %) : 7.10.2(23 ) carbon 13 NMR(9: 1 H2O: D2O) ( 161.6) 7 20 mg/100 mL(0.2 mg/mL) . (1 L) 0.2 g . . 4 3 . 8 , , , , , . 8.1 0.01 mol % . 8.2 3 g10 g . 8.3 6 mol/L , 461 nm . (NH2CONHCONH2) . DMSO d6 FT NMR carbon 13 NMR . 8.4 2 cm UV 50 % . 8.5 KS M 1019:2009 3 20 g . ,

4、 800 . 8.6 25 g 100 mL , 110 . 8.7 0.5 /min . 8.8 H2O: D2O(9: 1 v/v) 10 mol/L , carbon 13 NMR . C 13 NMR 22.6 MHz 12 000 . 9 . 10 30 , , , , . 5 . 11 . , . 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KS M 1019:2009 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Urea standard material ICS 71.040.30 Korean Agency for Technology and Standards http:/www.kats.go.kr

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