2
( 50kg 26 (22
50 3 ( 50 WHO (27 101
1967 1968 1970 1970 Cd, Cu, As 1991 2002 1968 1970 Cu, Cd, As) 1975 1984 Hg, Cd 1986 1991 1992 1994 5 1994 1999 1999 2002 (2003
1975 1980 1985 1990 1995 1998
(26 ( ( ( 1.1- -1.2- PCB 1.3-1.1.1-1.1.2-100m 2 900 m 2
( L 0.01 mg 0.05 mg 0.0005 mg 0.01 mg 0.01 mg 0.01 mg 0.8 mg 1.0 mg 1. 2mm 2. / ph5.8-6.3, HCl) = 10% 500mL 3. 200 / 4-5cm 6 4. 10-30 5. 3000 rpm 20 0.45µm
( ) L 0.02 mg 0.002 mg 1,2-0.004 mg 1,1-0.02 mg 0.04 mg 1,1,1-1 mg 1,1,2-0.006 mg 0.03 mg 0.01 mg 1,3-0.002 mg 0.01 mg 1. 5mm 2. / ph5.8-6.3, HCl) = 10% 500mL 3. 4 4. 10-30 5. 0.45µm
( L PCB 0.006 mg 0.003 mg 0.02 mg ( kg 150 mg 250 mg ( 50 mg 15 mg 150 mg 150 mg 150 mg 4000 mg 4000 mg
1. 2mm 2. / 1 mol/l HCl) = 3(w/v)% 200mL 3. 200 / 4-5cm 2 4. 10-30 5. 3000 rpm 20 0.45µm 1965 1976 1977 1979 1997
196.5 485 2,3,7,8-750
PCBs (polychlorobiphenyls) ( (1954 1972 6 100 1968 1971 Cl x Cl y PCB: polychlorobiphenyl co-planer PCB 20 coplanarity 209
O O C C C O Cl x Cl y 2,3,7,8-tetrachlorodioxine Polychlorodibenzoparadioxines (PCDDs) 75 2,3,7,8-TCDD 17 C O Cl x Cl y Polychlorodibenzofurans (PCDFs) 135
TEF ( Toxic Equivalency Factor) 2,3,7,8-T 4 CDD TEQ (Toxic Equivalency Quantity) TEF 2,3,7,8-T 4 CDD TDI (Tolerable Daily Intake) (pg/kg LD 50 : lethal dose 50% (g/kg) 50 1kg LD 50 = 0.6 µg/kg TDI = 0.3~3.5 pgteq/ kg pg
TEF Toxic Equivalency Factor Ah (aryl hydrocarbon hydroxylase) 2,3,7,8-T 4 CDD TEF TEQ TEF WHO (ng TEQ/Nm 3 TEQ TEQ TEF 1~4
TDI Tolerable Daily Intake (EPA) WHO TDI (pg/kg 1~4 100 0.6pg-TEQ/m 3 GC-MS 1pg-TEQ/L JIS K0312 GC-MS 1000pg-TEQ/ GC-MS TEQ: Toxicity Equivalency Quantity, TEF 2,3,7,8-T 4 CDD
GC-MS M/ M = 10000 TCDD = 322 0.03 TEQ 2,3,7,8- PCDDs 17