The sediment of waterbody is the main carrier of heavy metal elements, their contents reflect the environmental quality in the water system.
水体沉积物是重金属元素的重要载体,其含量高低能够反应水系环境质量状况。
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Under natural conditions, lakes, rivers, and other water bodies undergo Eutrophication, an aging process that slowly fills in the waterbody with sediment and organic matter.