The goal is to learn how to write better.

分析的目的是为了提高科技英语写作水平(不是针对作者)。

Green highlight is used to show good writing.

好好学习：用绿色标出。

Yellow means "questionable."

敢于提问：用黄色标出。

Synthetic fibers in atmospheric fallout: A source of microplastics in the environment?

https://www.sciencedirect.com/science/article/abs/pii/S0025326X16300066

 Sources, pathways and reservoirs of microplastics, plastic particles smaller than 5 mm, remain poorly documented in an urban context. 

While some studies pointed out wastewater treatment plants as a potential pathway of microplastics, none have focused on the atmospheric compartment.

In this work, the atmospheric fallout of microplastics was investigated in two different urban and sub-urban sites. 

Microplastics were collected continuously with a stainless steel funnel. Samples were then filtered and observed with a stereomicroscope. 

Fibers accounted for almost all the microplastics collected. 

An atmospheric fallout between 2 and 355 particles/m²/day was highlighted. 

Registered fluxes were systematically higher at the urban than at the sub-urban site. 

Chemical characterization allowed to estimate at 29% the proportion of these fibers being all synthetic (made with petrochemicals), or a mixture of natural and synthetic material. 

Extrapolation using weight and volume estimates of the collected fibers, allowed a rough estimation[,] showing that between 3 and 10 tons of fibers are deposited by atmospheric fallout at the scale of the Parisian agglomeration every year (2500 km²). 

These results could serve the scientific community working on the different sources of microplastic in both continental and marine environments.

Follow me, if you want to improve your writing skill:

如果你想提高科技英语写作能力，请跟我来...

http://blog.sciencenet.cn/blog-306792-1146690.html