The main pollutants are: oil, dredge materials, chemical waste-water, domestic sewage, goods dust, sludge, rubbish and heavy metal etc.

• 分别阐述了港口水域的主要污染和污染物:油类、疏浚物、化学品、生活污水、货物粉尘、垃圾及重金属等的来源及其危害。