Fate of particle-reactive pollutants in the Xiamen Bay

A simple model is established to describe the fate of particle-reactive pollutants in the Xiamen Bay.Based on the conditional distribution coefficients(K_a)of chemicals and residence times of particle and waters,the model can be used to predict the fractions of pollutants which would be scavenged to sediments and would escape from the system.The model is calibrated using scavenging data derived from ²³⁴Th-²³⁸U disequilibrium.The fate of a potential pollutant which will be scavenged is a function of the properties of the chemical,of the particle dynamics,and of the waters dynamics in the environment.It is inappropriate to overlook any factor.