Air quality is monitored for six pollutants: particulate matter, ground-level ozone, sulfur dioxide, nitrogen dioxide, carbon monoxide and lead.

空气监包括颗粒物、地面臭、化硫、化氮、一化碳和铅六种污染物。

And when it is, it gives off emissions like carbon dioxide, sulfur dioxide, mercury, ash and particulates, all of which can pollute the environment.

当燃烧煤炭时就会产化碳，化硫、汞、灰尘和微粒，所有这些都会污染环境。

It's the same gas chemist Jeff Sutton monitors carefully at Hawaii's Kilauea volcano.

Jeff Sutton 在夏威夷 Kilauea 火山仔细地监视这些化硫。

Half million of ton sulfur dioxide spilt into the atomsphere every year.

每年超过半吨的化硫泄入到大气中。

Sulfur dioxide is a popular molecule there, and clouds form from sulfuric acid.

化硫充斥着大气，云团是由硫酸形成的。

They're also monitoring the air for traces of hydrogen sulfide and sulfur dioxide.

他们还在监空气中硫化氢和化硫的痕迹。

Rob Guzman and his husband fled their guest-house rental business just 10 km from the lava flow. They were worried about the ground shaking from the eruptions, clouds of sulfur dioxide gas and roads being closed.

罗布·古斯曼和他的丈夫辞去了距离熔岩流仅10公里的宾馆租赁业务。他们担心火山爆发时，地面会发摇晃，以及空气中化硫有毒气体，以及道路也会封闭。

Since 3 November, the air quality index (AQI) — a measure of eight pollutants, including fine particulate matter, ozone and sulfur dioxide — in Delhi has remained consistently above 99. Anything above 150 is classified as unhealthy.

自 11 月 3 日以来，德里的空气数（AQI）一直保持在 99 以上，该数是对细颗粒物、臭和化硫等八种污染物的衡。

Other researchers have suggested that recent efforts to clean up sulfur pollution from ships around the world may be pushing up temperatures slightly, since sulfur dioxide tends to reflect sunlight and cool the planet somewhat.

其他研究人员则表示，近期世界各地在清理船舶带来的硫磺污染，这一行动可能会略微抬高气温，因为化硫往往会反射阳光，让地球变得凉爽一些。

Yes, the sulfur dioxide mixed with water and oxygen in the atmosphere to become sulfuric acid which is a major contributor to ozone reduction.

是的，化硫与大气中的水和气混合成为硫酸，这是臭减少的主要原因。

Gases such as sulfur dioxide can react with the atmosphere and create what's called Vog, a hazy air pollutant that can irritate the skin and have respiratory effects.

像化硫这样的气体会与大气发反应并产所谓的“Vog（火山雾）”，这是一种雾蒙蒙的空气污染物，会刺激皮肤并影响呼吸。

The readings of PM2.5, PM10, nitrogen dioxide and sulfur dioxide were all at their lowest levels for the same five-month period since records began in 2013.

PM2.5、PM10、化氮和化硫的读数都是 2013 年有记录以来同一时期的最低水平。

The team found that electric power plants -- which release sulfur dioxide -- were the biggest contributor to deaths related to pollution from other states.

研究小组发现，释放化硫的发电厂是造成其他州与污染相关死亡的最大原因。

Smoke from peatland wildfires contains a number of hazardous components, including carbon monoxide and sulfur dioxide, other gases, and particles of various sizes.

泥炭地野火产的烟雾含有多种有害成分，包括一化碳、化硫以及其它气体，还有各种大小的颗粒。

These gases are a death filled cocktail of hydrochloric acid, hydrogen, hydrogen sulfide, and sulfur dioxide.

这些气体是由盐酸、氢气、硫化氢和化硫混合而成的致命混合物。

You know, breathing high concentrations here of sulfur dioxide, carbon dioxide and methane gas, in unequal quantities -- 19 years of this.

你知道，呼吸这里高浓度的化硫、化碳、和甲烷气体，这些不等的气体－19年都是如此。

That acid rain was coming from the sulfur dioxide pollution spewed by coal-fired power plants upwind in states like Ohio.

这些酸雨来自燃煤发电厂排除的化硫，而发电厂们位于俄亥俄州等州逆风处。

Other dangerous pollutants include gases like nitrogen dioxide or sulfur dioxide, which are also produced from burning fuels.

其他危险的污染物包括化氮或化硫等气体，这些也是燃烧燃料产的。

But the Tonga eruption released only a small amount of sulfur dioxide, which scientists have linked to cooling.

但汤加火山喷发只释放了少的化硫，科学家们认为这与降温有关。

That last one being most important.

最后那个化硫是最重要的。