. DB/lSi - B4309617- 90 t B3!SmJJHil!ll *T$t*o *f,MEffl=f:iEfit fn1ifr !p;jjfill $LH 2 M!EifmBfJm* 2. 1 SitH .$adM.a,m.,AE.$ 1fIit, ;rG:fii,*o 2.2 l.llHtm * 1 J1it j :f it ,fij T Hlii II 1ll (%) J1tj (%) It: CT) -., /. 1.028 11.5-12.5 3.5-3.2 13.,16 2.3 m 2.3.1 .lJjo $:. 2 J1it - - - - * (PPm) (PPm) .l.A_l.1. (PPm) / DDT (PPm) I I -I- I I I : j 0.01 0.5 0.1 0.1 :tf . -.-_._- 2.3.2 !IH $Im.t 0 ;it 3 tjl W! 1!LMtA. *97.: immfl jjjt5J I f 63