Coal ash contains toxic heavy metals, including arsenic, cadmium, mercury and lead, which leach into water systems and get blown into the air during windy days.

煤灰含有有毒的重金属，包括砷、镉、水银和铅，这些会从供水系统中过滤处理，在有风的时候吹到空中。

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Coal ash is known to contain dangerous elements including arsenic, lead, and selenium, yet the TVA refused at first to issue any health warnings about contamination from the spill.

煤灰渣含有多种危险物质，包括砷、铅、硒等，然而田纳西流域管理局起先矢口否认煤灰渣中含有对健康有害的物质。

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Most trace elements, including manganese and arsenic, get into the water through the natural process of rock weathering.

大部分微量元素，包括锰和砷，通过自然过程中的岩石风化作用进入水体。

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Delhi draws three-quarters of its drinking water from the Yamuna river, into which the city dumps quantities of sewage, almost all of it untreated, to join a cocktail of farm chemicals and industrial effluents, including arsenic.

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The FSA says it tested almost 80, 000 samples of food last year and focuses "on those risks that can make people ill or worse" including looking for arsenic and listeria.

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He said second-hand smoke contained more than 4, 000 chemicals, including benzene, formaldehyde, arsenic, ammonia and hydrogen cyanide.

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