Abstract: The slice chitosan was used to study the sorption dynamics of pentachlorophenol (PCP) under different temperatures (5, 15 and 25 ℃). The influences of temperature (5, 15 and 25 ℃), salinity w(NaCl)(0～7%), pH value (5～8) and chlorine atom substitution on the sorption of chlorophenols were investigated, and the uptake capability of seven kinds of CPs, i.e. PCP, 2,4,6-TCP, 2,5-DCP, 3,4-DCP, 2,3-DCP, 2,6-DCP and 3-MCP, compared under the temperature of 5 ℃. It was showed that lower temperature markedly decreased the adsorption rates, but elevated the maximum PCP uptake capacities on the polymer. PCP uptake capacity was halved at pH levels higher than 6.5 under the temperature of 5 ℃, and w(NaCl) greater than 1% blocked PCP sorption almost completely. Of the seven kinds of chlorophenols, PCP has the maximum uptake capacity, followed by TCP, DCP, and finally MCP. The four kinds of DCP, with the same elemental compositions, achieved similar sorption performances.