1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS M 8420L- ( )KS M 8420:2012 2012 12 28 http:/www.kats.go.krKS M 8420:2012 : ( ) ( ) ( ) : (http:/www.standard.go.kr) : :1997 12 24 :2012 12 28 2012-0817 : : ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS M 8420:2012 L- ( ) L-Tryptophan 1 L- ( L- .) . 2
2、 . . ( ) . KS M 0006, KS M 0009, KS M 0024, KS M 0034, , , KS M 8001, 3 3.1 L- , . , . 3.2 KS M 0024 3 410 cm 1, 1 670 cm 1, 1 590 cm 1, 1 460 cm 1, 1 360 cm 1 740 cm 1 . , KS M 0024 7.2 a)( ) . 1 . C11H12N2O2FW: 204.23 H N CH2CH(NH2)COOHKS M 8420:2012 2 1 4 L- 5. , 1 . 1 20D (105 C) ( ) (Cl) (SO4)
3、(Pb ) (As) (Fe) (NH4) 99.0 % 30.5 32.5 0.2 % 0.05 % 0.01 % 0.02 % 0.001 % 1 mg/kg 0.001 % 0.02 % 5 5.1 (%) (cm 1) KS M 8420:2012 3 0.3 g 0.1 mg (98 %) 3 mL ( ) 50 mL 0.1 mol/L ( ) KS M 0034 6.( ) . , - . . 0.1 mol/L ( ) 1 mL 0.020 423 g C11H12N2O2 . 5.2 1 g (1:10) 20 mL . 5.3 20D 0.5 g 0.1 mg 40 mL
4、(50 mL) KS M 0006 4.4( ) . 15 C 25 C , (t) ( 0.10) 20 C . )20(10.120ttDD+= 5.4 (105 ) KS M 0009 5.1.4 a)( 1: ) . , 1.0 g 0.1 mg 3 2 mg . 5.5 ( ) KS M 0009 5.4.4 d)( 4: ) . 2.0 g 1 mg . 5.6 (Cl) a) 0.3 g 20 mL . b) (0.01 mg/mL) 3.0 mL 20 mL . c) KS M 8001 6.7 a)( ) . 5.7 (SO4) a) 0.3 g (2: 1) 0.3 mL
5、25 mL . b) (0.01 mg/mL) 6.0 mL (2: 1) 0.3 mL 25 mL . c) KS M 8001 6.15 a)( ) . 5.8 (Pb ) a) 4 g 10 mL , 1 mL (50050) C (2: 1) 2 mL 10 mL KS M 8420:2012 4 (5 C) ( ). 40 mL (A )(5.10 ). A 10 mL( 1.0 g) 15 mL . b) 10 mL 1 mL (50050) C (2: 1) 2 mL 10 mL (5 C) ( ). 40 mL (B )(5.10 ). B 10 mL( 1.0 g) (0.0
6、1 mg/mL) 1.0 mL 15 mL . c) KS M 8001 6.24 c)( ) . 5.9 (As) a) 3 g (100 mL) 40 mL . b) (0.001 mg/mL) 3.0 mL (100 mL) 40 mL . c) KS M 8001 6.19 c)N,N- (AgDDTC ) . 5.10 (Fe) a) 5.8 A 10 mL( 1.0 g) 15 mL . b) 5.8 B 10 mL (0.01 mg/mL) 1.0 mL 1 mL . c) M 8001 6.22 b)(1,10- ) . 5.11 (NH4) a) 0.5 g 1 g 80 m
7、L . b) (0.01 mg/mL) 10 mL 1 g 80 mL . c) KS M 8001 6.11 e)( - ) . 5.12 KS M 8001 6.25.1( ) , . a) b) 0.20 g 50 mL 5 L ( 20 g). c) 1- 2 1 1( ) . d) 10 cm e) 100 C 30 . 80 C 10 . f) L- (Rf) 0.6 . 6 . KS M 8420:2012 5 7 . a) “L- ” “ ” b) c) ( ) d) e) f) L-() 153787 1 92 3(16) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS M 8420:2012 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS L-Tryptophan ICS 71.040.30
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