珠江口沙井水域及牡蛎体中石油烃的含量、组成及其变化特点

VARIATIONAL CHARACTERS OF CONCENTRATION OFPETROLEUM HYDRCARBON IN WATERS AND OYSTERS AROUBD SHAJIN,PEARL RIVER ESTUARY

本文研究了珠江口沙井水域及牡蛎体中石油烃的含量、组成及其变化特点。两个研究周期的研究结果表明，沙井水域的石油烃水平没有发生明显变化；牡蛎体中烃类的特征参数显示出明显的石油烃特点，其来源可能是燃料油类；育肥期间牡蛎体中的石油烃存在一个净化过程，其净化速率和程度与水体中石油烃浓度、盐度和水温等有密切关系。

The tendencies and characters of petroleum hydrocarbon in sea water,sediments and oysters around Shajin,Pearl River Estuary,were studied during oysterfattening periods.No obvious differences in concentrations of petroleum hydrocarbon wereobserved in sea water and sediments between two fattening periods.The characteristicparameters showed that petrogenic hydrocarbons were obvious in oysters and light fuel oilsmight be the main source. A purification process of petroleum hydrocarbon in oysters wasobserved.The rate and extent of release of petroleum hydrocarbon in oysters were closely inrelation to concentration of petroleum hydrocarbon in sea weater,salinity,and temperature.