舟山海洋沉积物及沿海沉积物流动相石油污染的电阻率特性及其影响因素研究

发布时间：2018-04-29 21:30

本文选题：海洋沉积物 + 沿海沉积物　；参考：《海洋与湖沼》2017年04期

【摘要】：海洋沉积物作为难以降解的石油类污染物的最终归宿,其污染程度的监测至关重要。本文通过现场采集舟山海洋沉积物及沿海沉积物(包括中砂、粉砂质砂和粉砂),以流动相原油为代表,采用单因素分析法室内配制标准污染沉积物样品测定电阻率,探讨沉积物类型、含水率、含油率、时间因素对石油污染海洋及沿海沉积物的电阻率影响及变化规律。结果显示,未污染和原油污染后海洋沉积物中砂、粉砂质砂、粉砂的电阻率随含水率的升高均呈幂函数降低趋势,并符合Archie公式。在含水率15%时,电阻率随含油率总体上升;而在含水率5%时,中砂电阻率呈现一个小幅上升的趋势;粉砂电阻率先小幅下降后略上升再小幅下降,粉砂质砂电阻率则是先大幅下降后略上升再小幅下降。15%含水率污染沉积物的电阻率随时间增加持续上升;5%含水率污染沉积物电阻率先上升后略下降再大幅上升。研究成果可为海洋及沿海沉积物石油污染电阻率法快速监测提供理论支持,以期为海洋环境管理部门提供相应的决策依据。
[Abstract]:Marine sediment is the final destination of petroleum pollutants, which is difficult to degrade, so it is very important to monitor the pollution degree of marine sediment. In this paper, we collected marine and coastal sediments (including medium sand, silty sand and silty sand) from Zhoushan, taking mobile phase crude oil as the representative, using single factor analysis method to prepare standard polluted sediment samples to determine the resistivity. The effects of sediment types, water content, oil content and time on the resistivity of marine and coastal sediments polluted by oil are discussed. The results show that the resistivity of sand, silty sand and silt in marine sediment decreases with the increase of water content, and accords with the Archie formula. When the water cut is 15, the resistivity increases with the oil content, while at the water cut of 5, the resistivity of medium sand increases slightly, and the resistance of silt decreases slightly, then increases slightly and then decreases slightly. The resistivity of silty sand first decreased significantly, then increased slightly and then decreased slightly. The resistivity of sediment contaminated with water content of 15% increased continuously with the increase of time, and the resistance of sediment contaminated with water content of 5% increased first, then decreased slightly and then increased sharply. The research results can provide theoretical support for rapid monitoring of oil pollution resistivity of marine and coastal sediments, and provide corresponding decision basis for marine environmental management department.
【作者单位】：浙江海洋大学水产学院;
【基金】：国家自然科学基金项目,41502261号浙江省教育厅一般项目,Y201534409号浙江省大学生科技创新活动计划(新苗人才计划)项目,2016R411015号浙江海洋大学大学生科技创新活动计划(育苗人才计划)项目,YMJH201609号
【分类号】：X55

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