Wang Zhaohui, Lu Xinxin, Zhang Ke
College of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China.
College of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China.
J Environ Sci (China). 2016 Mar;41:6-15. doi: 10.1016/j.jes.2015.06.009. Epub 2015 Aug 14.
Metals and biogenic elements were analyzed from surface sediments of sixteen stations and a 32cm core collected from Zhifu Bay in July 2009. High concentrations of biogenic silica (BSi) reflected the high diatom productivity in the Bay. Meanwhile, total organic carbon (TOC) in Zhifu Bay was mainly from terrestrial sources. All metals were lower than the marine sediment quality guidelines. Based on the vertical profiles of biogenic elements, there was a clear increase of TOC, total nitrogen (TN), and total phosphate (TP) between 1985 and 2000. TN concentrations decreased after the start of the operation of the sewage treatment plant in 1998; however TOC and BSi remained at high levels. Metal concentrations showed a general increase from the bottom to the top of the core. Most anthropogenic metals reached a maximum during 1996 and 2000, and decreased after the startup of the sewage plant; however, they have increased again recently. The results from correlation analysis and principal component analysis show that industrial pollution is the main source of Cd, Cr, Cu, Ni, Pb and Zn contamination in Zhifu Bay, and Yantai Port and ship transportation also contribute a lot to Cd, Cu, Hg, and Pb pollution.
对2009年7月从芝罘湾采集的16个站位的表层沉积物和一根32厘米长的岩芯进行了金属和生源要素分析。高浓度的生物源二氧化硅（BSi）反映了该海湾硅藻的高生产力。与此同时，芝罘湾的总有机碳（TOC）主要来自陆源。所有金属含量均低于海洋沉积物质量指南。根据生源要素的垂直剖面，1985年至2000年间TOC、总氮（TN）和总磷（TP）明显增加。1998年污水处理厂运行后TN浓度下降；然而，TOC和BSi仍处于高水平。金属浓度从岩芯底部到顶部总体呈上升趋势。大多数人为源金属在1996年至2000年期间达到最大值，污水处理厂启动后下降；然而，它们最近又有所增加。相关分析和主成分分析结果表明，工业污染是芝罘湾镉、铬、铜、镍、铅和锌污染的主要来源，烟台港和船舶运输对镉、铜、汞和铅污染也有很大贡献。
