The 2005 AQG set for the first time a guideline value for particulate matter (PM).

2005年空气质量准则第一次为可吸入颗粒物（PM）确定了一项指导值。

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Most deep-sea faunas rely for food on particulate matter, ultimately derived from photosynthesis, falling vent would dwarf any contribution from advection.

大多数深海动物依靠颗粒物质作为食物，这些颗粒物质最终来自于光和作用，下降的排放口会使平流的作用相形见绌。

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Scientists have known for a long time that aerosols such as soot, dust and other small particulate matter, alter cloud density and the radiative balance of the atmosphere.

科学家们很早之前就发现，诸如煤烟、灰尘和其他细小的微粒，能改变云体的密度及大气的辐射平衡。

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The report also says that the congestion charge has caused reductions in the two most concerning pollutants to London, by 8% for nitrogen oxides and 7% for particulate matter that is fine enough to penetrate the lungs and cause health problems (referred to as PM10).

FORBES: Paul Maidment

It aims to establish a platform for exchange of knowledge with respect to methods for characterisation of colloidal and particulate matter in these systems and to cover the technological aspects of particulate matter in different water treatment processes such as drinking water, wastewater and landfill polluted waters.

UNESCO: Water Portal | Water Events Worldwide

The study compared mice fed a high-fat diet with those fed a normal, healthy diet, and exposed some members of both groups daily to fine particulate matter, controlling for all other factors.

FORBES: Two New Reasons to Worry about Air Pollution: Obesity and Diabetes