[Evidence of benzo-3, 4-pyrene in the water and organic sediments of briny pools of polynesian atolls. Biotic and abiotic factors].

The presence of 3,4-benzopyrene is reported in samples of water and sediments from three briny ponds free from pollution of exogenous origin belonging to three different atolls of Polynesia. The synthesis of this hydrocarbon seems to be dependent on the presence of abundant phytoplancton and of bacterial flora.