The time-dependent changes in the concentration of the 2, 4, 6-trichlorophenol (TCP) were determined by GC/ECD,in a soil-wheat simulated ecosystem. It was demonstrated and the half-period of TCP equal to 3 days in soil, 8 days in wheat; the residue of the TCP not detected in soil and wheat after experimental period. Assuming that the transport and degradation of TCP concentration in soil and wheat were predicted by two compartment model. The comparison of the TCP concentration between calculation and experi...