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| 钦州湾海水中石油烃时空变化特征及其影响因素 |
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杨 斌1,2,3, 钟秋平1,2, 张晨晓1,2, 鲁栋梁1,2,3, 梁燕茹1,2, 李尚平4
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1.钦州学院 广西北部湾海洋生物多样性养护重点实验室;2.钦州学院 北部湾海洋生物资源开发与保护广西高校重点实验室;3.中国海洋大学 海洋化学理论与工程技术教育部重点实验室;4.广西民族大学 化学化工学院
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| 摘要: |
| 2009 年1 月至11 月对广西钦州典型养殖海湾?钦州湾海域表层海水石油烃进行了4 次采样调查,分析该海域石油烃污染状况, 探讨石油烃的时空分布特征及其影响因素。结果表明, 钦州湾表层海水石油烃的质量浓度在0.001～0.095 mg/L 之间, 平均值为0.022 mg/L; 季节变化呈现夏季最高, 秋、冬季次之, 春季最低的特点, 夏、冬季海水受到不同程度石油污染, 春、秋季均达到国家《海水水质标准》二类标准。水平分布上总体呈现春、秋季节外湾大于内湾, 夏、冬季节内湾大于外湾的特征。钦州湾水产养殖活动及陆地径流输入是影响石油烃时空变化的主要因素。春季石油烃的质量浓度与温度和溶解氧等环境因子有着较好的相关性, 夏季石油烃和溶解无机磷存在显著正相关。总体上钦州湾海域目前受石油烃污染程度较轻, 仍有一定接纳自净能力。 |
| 关键词: 石油烃 时空变化 影响因素 污染评价 钦州湾 |
| DOI：10.11759/hykx20150224001 |
| 分类号: |
| 基金项目:广西科学研究与技术开发计划项目(桂科攻No. 0992027-1);广西教育厅科研项目(No. 201012MS195, No. 201106LX546) |
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| Spatiotemporal variations of petroleum hydrocarbon and its influencing factors in seawater of Qinzhou Bay |
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YANG Bin1,2,3, ZHONG Qiu-ping1,2, ZHANG Chen-xiao1,2, LU Dong-liang1,2,3, LIANG Yan-ru1,2, LI Shang-ping4
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1.Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, Qinzhou University;2.Key Laboratory of Exploitation and Protection of Beibu Gulf Marine Biological Resources, Guangxi Colleges and Universities, Qinzhou University;3.Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China;4.School of Chemistry and Chemical Engineering, Guangxi University for Nationalities
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| Abstract: |
| In this study, we conducted four cruises in Qinzhou Bay, a typical aquaculture area in Qinzhou, Guangxi Zhuang Autonomous Region, from January to October 2009, to determine petroleum hydrocarbon (PHC) concentrations, to analyze the PHC pollution status in the surface seawater, and to determine the spatiotemporal variations of PHC and its influencing factors. Our results show that the concentrations of PHC ranged from 0.001-0.095 mg/L, with an average of 0.022 mg/L, and the PHC concentrations varied seasonally as follows: summer> autumn> winter>spring. The seawater of Qinzhou Bay displayed different PHC pollution levels in summer and winter, and seawater quality fell within the national seawater quality standards for the first and second classes of seawater in spring and autumn. The PHC concentration in the outer bay was higher than that in the inner bay in spring and autumn, and vice versa in summer and winter. Aquaculture activities and land runoff were the main factors influencing spatiotemporal variations of PHC in the surface seawater of Qinzhou Bay. The PHC concentration corresponds well with water temperature and with dissolved oxygen in spring, and is positively correlated with dissolved inorganic phosphate in summer. Overall, while Qinzhou Bay is only moderately contaminated with PHC at present, steps could be taken to improve its self-purification ability. |
| Key words: petroleum hydrocarbon spatiotemporal variations influence factor pollution assessment Qinzhou Bay |