采集东湖柱状沉积物，分析了铅、镉、铜、锌、铁等金属元素的垂直分布特征。
The vertical distribution of lead, cadmium, copper, zinc and iron has been investigated in the sediments of East Lake, Wuhan.
锌和镉电解沉积物的铬酸盐处理。
Chromate conversion coatings on zinc or cadmium electrodeposits.
结果表明沉积物中铅含量近年来有所下降，镉和锌含量明显高于背景值。
The content of lead has decreased in recent years while cadmium and zinc are relatively high.
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