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

空气质量监测包括颗粒物、地面臭氧、二氧化硫、二氧化氮、一氧化碳和铅六种污染物。

Which would also screen out particulate matter dangerous to human health.

过滤器还可以筛选出危害人类健康的颗粒物。

Common combustion products include hydrocarbons, oxides of nitrogen and sulfur, ammonia and particulate matter.

常见的燃烧产物包括碳氢化物、氮和硫的氧化物、氨和颗粒物。

It urged more action to reduce particulate matter that damages lungs.

它敦促采取更多行动来减少损害肺部的颗粒物。

But County Health Director Christine Stinson says particulate matter is a concern.

但县卫生主任克里斯汀·斯廷森表示，悬浮颗粒物是一个令人担忧的问题。

And one of the primary measurements for the Index is particulate matter 2.5.

数的主要测量标之一是“颗粒物 2.5”。

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 3 日以来，德里的空气质量数（AQI）一直保持在 99 以上，数是对细颗粒物、臭氧和二氧化硫等八种污染物的衡量。

In the past two weeks, there have been over 400 wildfires in Canada, nearly 250 of which that are still uncontrolled, which means they are dispersing a lot of fine particulate matter into the air.

在过去的两周里，加拿大发生了 400 多起野火，其中近 250 起仍未得到控制，也就是说，这些大火正在向空中扩散大量细颗粒物。

Mr. Wehrum said the analyses the agency is conducting " illuminate the issue" of particulate matter and the question of what level is acceptable for the purposes of policymaking.

韦鲁姆说，机构正在进行的分析“阐明了”颗粒物问题，也阐明了制定政策时怎样的水平才能被接受的问题。

And the truth is, yes, some particulate matter does come from electric stoves, but they're not combusting methane, which means you're not getting products like nitrogen dioxide.

事实上，是的，电灶确实会释放一些颗粒物，但它们并不燃烧甲烷，这意味着不会有像二氧化氮这样的产物。

Particulate matter can end up deep in the lungs and cause heart attacks, strokes and asthma, he said, adding that the risk is particularly acute in urban areas.

他说，微粒物质最终会被吸入肺部，导致心脏病发作、中风和哮喘，城市地区居民面临的风险尤其严重。

Diesel engines, on the other hand, produce more Nitrogen Oxide and fine particulate matter in the form of soot, which is characterized by heavy black deposits.

另一方面，柴油发动机以烟灰的形式产生更多的氮氧化物和细颗粒物，其特征是大量的黑色沉积物。

And there are some studies already showing that the very small particulate matter can go directly into the brain affecting office workers.

一些研究已经证明，这种极小的颗粒物质可以直接进入大脑，影响办公室工作人员。

The substance is known as particulate matter, a mixture of small, solid particles and water droplets found in the air.

这种物质被称为颗粒物，是空气中发现的小固体颗粒和水滴的混物。

The air inside virtually every house contains some fine particulate matter, coming from sources such as mold and cooking smoke.

事实上，每家每户的空气中都含有一些来自霉菌和炊烟等来源的细颗粒物。

They also face pollution from particulate matter, like vehicle exhaust or wildfire smoke, which can enter classrooms from the outside.

他们还面临着来自颗粒物的污染，比如汽车尾气或野火产生的烟雾，这些颗粒物可能会从室外进入教室。

The WHO study finds a reduction in air pollutants could lessen deaths from particulate matter by 15 percent.

世界卫生组织研究发现，空气污染物减少可以使因颗粒物污染造成的死亡率降低15%。

In parts of the capital levels of fine particulate matter reached 30 times the limit deemed safe.

在首都的某些地方，大气细颗粒物的含量达到了最低安全标的30倍。

We have super sophisticated air handling systems that prevent any smoke or particulate matter from getting in.

我们拥有超精密空气处理系统，能完全阻隔烟雾和颗粒物进入。

Pollutants and small particulate matter landing on your plants can block sunlight, which is essential for photosynthesis.

污染物和小颗粒物质落在植物上会阻挡阳光，而阳光对光作用至关重要。