气候变化领域集成服务门户(CCPortal): Organic profiles of brake wear particles

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DOI	10.1016/j.atmosres.2021.105557
	Organic profiles of brake wear particles
	Alves C.; Evtyugina M.; Vicente A.; Conca E.; Amato F.
发表日期	2021
ISSN	0169-8095
卷号	255
英文摘要	Four brake pads were tested in a bench dynamometer under test cycles with different braking severities: i) two types of conventional brake pads (low steel 1 and 2), and ii) two types of non-asbestos organic brake pads (NAO 1 and 2) with non-ferrous materials. Wear particles (PM10) were analysed for total carbon by a thermo-optical method and then solvent-extracted and analysed by gas chromatography–mass spectrometry. In general, the test protocols with less braking and lower temperatures gave rise to much lower PM10 levels. Total carbon accounted for PM10 mass fractions in a wide range (5.07–75.4%), generally decreasing with the severity of the braking cycles. More than 150 organic compounds were quantified, comprising aliphatics, polycyclic aromatic hydrocarbons (PAHs), alcohols, several types of acids (alkanoic, alkenoic, diacids and others), glycol/glycerol derivatives, plasticisers, sugars, sterols and various phenolic constituents. Globally, larger amounts of most of these compounds were emitted by NAO 2 under the smoothest braking cycle. Several correlations between compounds with the same functional groups were established. No PAH with five or more benzenic rings was detected. The differences in composition and concentrations are discussed based not only on the characteristics of the braking circuits, but also on the diverse quantities and types of organic compounds used in the brake pad formulations. © 2021 Elsevier B.V.
英文关键词	Acids; Brake wear; PAHs; Phenolic compounds; Plasticisers; PM10
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236792
作者单位	Department of Environment and Planning, Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, 3810-193, Portugal; Institute of Environmental Assessment and Water Research, Spanish Research Council (IDÆA-CSIC), Barcelona, 08034, Spain; Department of Chemistry, University of Turin, Via Pietro Giuria, Turin, 10125, Italy
推荐引用方式 GB/T 7714	Alves C.,Evtyugina M.,Vicente A.,et al. Organic profiles of brake wear particles[J],2021,255.
APA	Alves C.,Evtyugina M.,Vicente A.,Conca E.,&Amato F..(2021).Organic profiles of brake wear particles.Atmospheric Research,255.
MLA	Alves C.,et al."Organic profiles of brake wear particles".Atmospheric Research 255(2021).