N-

10 123.

1.

NO +H+1. (NO2-) 1.15.6216.8666.4913.413.404.812.0624.453.42mg/kg2.

2.

4~8202.0.002 0.424 1.106 6.708 146.0mg/Kg)3.

1. LD50200mg/kg0.30.5g1.0~3.0g 1. Fe2+ Fe3+ 1.

1.

2.

0.15g/kg50mg/kg30mg/kg2mg/kg ADI0~5mg/kgd0~0.2 mg/kgd 1.

1.

2. 20 N-

=N-N=O N-

R1 N- N N=O (N-nitrosamine) R2

N- (N-nitrosamide) R1 N N=O R2CO1N-2

1.N- 1N-10g/kgN-N-1 N- 1N-(NaNO3)(NaNO2)N2O3NO2N2O4NO1. 2.3.4. 1 (R-NH2)(R2NH)(R3N)(RCONH2) N-

2 pHSCN-Br-Cl- 1.N- 2.N- 1

g/kg

0.50.82.41.224

0.840

g/kg

44912242026

2.N-2

2.N-3

2.N-4

2.N-5

3.N-NPH