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1986年9月—87年2月,对珠江口伶仃洋东岸沙井水域的育肥牡蛎软组识的石油烃进行了研究。研究结果表明:(1)牡蛎软组织总烃浓度随时间呈逐渐下降趋势,其变化规律可用指数方程C_t=C_oe~(-bt)来描述,据此计算了总石油烃化合物的生物学半保留期为43d;(2)牡蛎软组织总烃浓度变化受水体石油烃浓度的影响,它们间有一定的正相关关系,而与底质的石油烃浓度间不是正相关;(3)牡蛎软组织的总烃浓度与其脂类含量间亦没有明显的相关关系;(4)牡蛎样品的荧光光谱特征表明,分子量小、溶解度大的芳烃化合物比分子量大、溶解度小的优先被释放。
From September 1986 to February 1987, the petroleum hydrocarbons identified by the soft-fat diet of fattening oysters from the manhole in the east bank of the Lingdingyang Sea, Pearl River Estuary were studied. The results showed that: (1) The total hydrocarbon concentration of oyster soft tissue decreased gradually with time, and its variation law could be described by the exponential equation C_t = C_oe ~ (-bt). Based on this, the biological half retention period of total petroleum hydrocarbon compounds (43). (2) The change of total hydrocarbon concentration in oyster soft tissue was affected by the concentration of petroleum hydrocarbons in the oyster, and there was a positive correlation between them. However, it was not positively correlated with the petroleum hydrocarbon concentration in the substrate. (3) There was no significant correlation between concentration and lipid content. (4) The fluorescence spectra of oyster samples showed that the aromatic compounds with small molecular weight and high solubility had higher molecular weight and lower solubility, which were preferentially released.