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于2010年6月对雷州半岛海域进行了采样调查,研究分析了雷州半岛海域表层海水和沉积物中石油烃浓度的平面分布特征,并对石油烃与其它水质参数的相关关系进行了探讨。结果表明,雷州半岛海域表层海水石油烃质量浓度为0.013~0.093 mg/L,平均值为0.038 mg/L,基本属于一、二类水质,部分站位达到三类水质,所占比率为19.3%;水质等级属于影响,未达到污染。在地域分布上,呈现出东侧>南侧>西侧的分布趋势,且在东、南两侧海域,石油烃浓度明显呈现出由海洋向沿岸逐渐增大的分布趋势,而在西侧,此分布趋势并不明显。雷州半岛海域沉积物石油烃质量浓度为0.06~11.05μg/g,平均值为2.92μg/g,质量等级属于一类;底质等级属于良好,未受石油污染。在地域分布上,沉积物石油烃浓度呈现出东侧>南侧>西侧的分布趋势,且在东、南、西侧,石油烃浓度均呈现出明显的从海洋到沿岸逐渐增大的分布趋势。雷州半岛海域表层海水石油烃与p H、TOC呈现出一定正相关性,与水温、沉积物石油烃呈现出不显著负相关,与盐度、Eh和多环芳烃则无明显相关关系。
In June 2010, a sampling survey was conducted on the waters of Leizhou Peninsula. The distribution characteristics of petroleum hydrocarbons in the surface seawater and sediment of the Leizhou Peninsula were studied and analyzed. The correlation between petroleum hydrocarbons and other water quality parameters was also discussed. The results showed that the concentration of petroleum hydrocarbon in the surface seawater of Leizhou Peninsula was 0.013-0.093 mg / L, with an average value of 0.038 mg / L, basically belonging to one or two types of water quality, and some of the stations reached three types of water quality, accounting for 19.3% ; Water quality is an impact, did not meet the pollution. In terms of geographical distribution, the distribution trend on the east> south> west appears, and in the east and south seas, the petroleum hydrocarbon concentration obviously shows a distribution trend from the ocean to the coast. On the west side, This distribution trend is not obvious. The mass concentration of petroleum hydrocarbons in the sediments of Leizhou Peninsula was 0.06-11.05μg / g with an average value of 2.92μg / g, the quality grades belonged to one class; the sediment grade was good and not oil-contaminated. In terms of geographical distribution, the petroleum hydrocarbon concentration in sediments shows the distribution trend on the east> south> west and the petroleum hydrocarbon concentrations on the east, south and west sides show a clear distribution from the ocean to the coast trend. There was a positive correlation between p H and TOC and p H and TOC in surface seawater of Leizhou Peninsula, but no significant negative correlation with water temperature and sediment petroleum hydrocarbon, and no significant correlation with salinity, Eh and PAHs.