Marine sewage outfalls are the cheapest method of disposal for municipalities with restricted funds, despite their negative effects on marine ecosystems. This study was conducted on the marine sewage outfalls of the Turkish cities Rize (Black Sea) and Yalova (Sea of Marmara). Heavy metals, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and organochlorine pesticides (OCPs) were investigated in the sediments for determine pollution degree. Two of Yalova stations were classified as having high contamination levels (1034.436 and 1476.483 ng/g, respectively) and all the other stations suffered moderate pollution in terms of ∑₁₆PAHs. ∑DTTs in sediments above probable effect levels (PELs), were observed both stations Yalova and Rize. The highest metal concentrations in the sediments from the eight stations ranged from 4.97 to 29.65 mg/kg for Ni; 7.57–44.14 mg/kg for Cr; 9.84–42.76 mg/kg for Cu; and 48.08–103.77 mg/kg for Zn. In sum, examination of pollutant sources provides clear evidence of an anthropogenic effect on the discharge environments.

尽管资金有限，但市政污水排污口对市政海洋生态系统有不利影响，但排污口是最便宜的处理方法。这项研究是针对土耳其城市里兹（黑海）和亚洛瓦（马尔马拉海）的海洋污水排放口进行的。对沉积物中的重金属，多环芳烃（PAH），多氯联苯（PCB）和有机氯农药（OCP）进行了研究，以确定污染程度。Yalova的两个站点被归类为高污染水平（分别为1034.436和1476.483 ng / g），所有其他站点都受到∑ ₁₆中等污染多环芳烃。在Yalova和Rize站都观测到了高于可能影响水平（PELs）的沉积物中的ΣDTT。八个站的沉积物中最高的金属镍浓度范围为4.97至29.65 mg / kg。铬7.57–44.14 mg / kg；铜9.84-42.76 mg / kg; 锌为48.08-103.77 mg / kg。总而言之，对污染物源的检查提供了人为影响排放环境的明确证据。