Oil-based mud and toxic compound mud used in drilling may not be discharged into the sea.

钻井所使用的油基泥浆和其他有毒复合泥浆不得排放入海。

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In this article, some research was done about the enrichment and try to find new way to study the degrading of toxic compound.

本文从富集液的角度进行了六六六微生物降解方面的相关研究，拓宽了微生物降解有毒化合物的研究范围。

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Nitrobenzene compounds, a highly toxic compound, is very difficult to be degraded and its chemistry property is very stabilizing.

硝基苯类化合物是一类高毒性的有机污染物，它们性质稳定，极难生化降解。

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So, yes, they're very poisonous, and in fact, there are areas where you find this toxic compound, cyanide.

因此，没错，它们毒性非常强，而实际上，你会发现很多地方都有这种有毒成分，氰化物。

麻省理工公开课 - 化学原理课程节选

By combining an artist and scientific quest, the two professors at Michigan State University found that a certain type of metal-loving bacteria can transform high amounts of the toxic chemical compound gold chloride from a liquid into solid 24-karat gold.

FORBES: FOCUS: 'Microbial Alchemy' Produces Gold From Toxic Chemical

The plaques receded, but the compound proved toxic.

FORBES: Skin Deep

The compound appears not to show any toxic side-effects, although much more safety testing will be needed.

BBC: 'New vitamin' could fight brittle bone