(Table 60) Bulk contents of chemical elements and their speciation in bottom sediments@en

Forms of element occurrence in bottom sediments are shown in % of bulk contents. Form 1 - sorbed and combined with calcium carbonate; Form 2 - combined with Mn-oxyhydroxides; Form 3 - combined with Fe-oxyhydroxides; Form 4 - residue (combined with aluminosilicates).底沉积物中元素的赋存形式以占全样总含量（bulk contents）的百分比表示。形式1：吸附态及与碳酸钙（calcium carbonate）结合态；形式2：与羟基氧化锰（Mn-oxyhydroxides）结合态；形式3：与羟基氧化铁（Fe-oxyhydroxides）结合态；形式4：残渣态（与硅铝酸盐（aluminosilicates）结合）