Chelating agents can be used to remove toxic metal ions from soil or water.

螯合剂可以用来从土壤或水中清除有毒的金属离子。

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This bacterial boom could lead to higher levels of methylmercury, a bioavailable form of the toxic metal.

这种细菌爆发式增加可能导致甲基汞水平增高，这是一种有毒金属的生物可利用形式。

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Thallium is a highly toxic metal element that plays not role in the metabolism of plants or animals.

铊是一种剧毒且对动植物的新陈代谢不起任何促进作用的金属元素。

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Key challenges facing society over the next decades include management of our environmental legacy, particularly toxic metal contamination and safe disposal of the significant global radioactive legacy.

UNESCO: 2011 UK and Ireland Winners

The Unep assessment said the concentration of mercury in the top 100m of the world's oceans had doubled over the past century, and estimated that 260 tonnes of the toxic metal had made their way from soil into rivers and lakes.

BBC: Nations agree on legally binding mercury rules

The Unep assessment says that the concentration of mercury in the top 100m of the world's oceans has doubled over the past century, and estimates that 260 tonnes of the toxic metal have made their way from soil into rivers and lakes.

BBC: UN: Rising mercury emissions increase risk to humans