这一过程产生氢气和一氧化碳的混合物，也叫做合成气，剩余的是无定形的基本碳，也叫做炭黑。
This releases a mixture of hydrogen and carbon monoxide, known as syngas, and leaves a residue of amorphous elemental carbon called carbon black.
炭黑作为化学颗粒混合物的一部分，鉴于其对人类健康造成的影响，长期以来都被当做一种空气污染物而备受关注。
Black carbon is part of a chemical mix of particulate matter that has long been an air-pollution concern due to its impacts on human health.
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