Opposite impact of DOM on ROS generation and photoaging of aromatic and aliphatic nano- and micro-plastic particles

doi:10.1016/j.envpol.2022.120304

CORC > 植物研究所 > 中国科学院植物研究所 > 中科院北方资源植物重点实验室

	Opposite impact of DOM on ROS generation and photoaging of aromatic and aliphatic nano- and micro-plastic particles
	Cao, Runzi ; Liu, Xinna 5,6,7; Duan, Jiajun ; Gao, Bowen ; He, Xiaosong 1; Bolan, Nanthi 2,3; Li, Yang
刊名	ENVIRONMENTAL POLLUTION
	2022
卷号	315
关键词	Particulate plastics Dissolved organic matter Weathering Reactive oxygen species UV irradiation
ISSN号	0269-7491
DOI	10.1016/j.envpol.2022.120304
文献子类	Article
英文摘要	Dissolved organic matter (DOM) plays a significant role in the photochemical behavior of nano-and micro-plastic particles (NPs/MPs). We investigated the influence of DOM on the mechanism on the photoaging of NPs/MPs with different molecular structures under UV365 irradiation in water. DOM components used in this study are mainly humic acid and fulvic acid. The results showed that DOM promoted the weathering of aliphatic NPs/MPs (polypropylene (PP)), but inhibited or had only a minor effect on the photoaging of aromatic NPs/MPs (poly-styrene (PS) NPs/MPs, carboxyl-modified PS NPs, amino-modified PS NPs, and polycarbonate MPs). NPs with a large surface area may adsorb sufficient DOM on the particle surfaces through pi-pi interactions, which competes with NPs for photon absorption sites, thus, can delay the photoaging of PS NPs. Aromatic MPs may release phenolic compounds that quench center dot OH, thereby weakening the photoaging process. For aliphatic MPs, the detection of peracid, aldehyde, and ketone groups on the polymer surface indicated that DOM promoted weathering of PP MPs, which was primarily because the generation of center dot OH due to DOM photolysis may attack the polymer by C-C bond cleavage and hydrogen extraction reactions. This study provides insight into the UV irradiation weathering process of NPs/MPs of various compositions and structures, which are globally distributed in water.
学科主题	Environmental Sciences
电子版国际标准刊号	1873-6424
出版地	OXFORD
WOS关键词	DISSOLVED ORGANIC-MATTER ; HUMIC-ACID ; PHOTOCHEMICAL FORMATION ; OXYGEN ; MICROPLASTICS ; PHOTODEGRADATION ; NANOPARTICLES ; PHOTOGENERATION ; NANOPLASTICS ; EXPOSURE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000869487100004
资助机构	Fund for National Key R & D Program of China [2021YFC3200401] ; National Natural Science Foundation of China [52171018, 21677015, 22006031] ; Natural Science Foundation of Hebei Province [B2019204315]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/28809]
专题	中科院北方资源植物重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China 2.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China 3.Univ Western Australia, Sch Agr & Environm, Perth, WA 6009, Australia 4.Univ Western Australia, UWA Inst Agr, Perth, WA 6009, Australia 5.Beijing Normal Univ, Sch Environm, Key Lab Water & Sediment Sci, State Key Lab Water Environm Simulat,Minist Educ, Beijing 100875, Peoples R China 6.Chinese Acad Sci, Inst Bot, Beijing Key Lab Grape Sci & Enol, Beijing 100093, Peoples R China 7.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Cao, Runzi,Liu, Xinna,Duan, Jiajun,et al. Opposite impact of DOM on ROS generation and photoaging of aromatic and aliphatic nano- and micro-plastic particles[J]. ENVIRONMENTAL POLLUTION,2022,315.
APA	Cao, Runzi.,Liu, Xinna.,Duan, Jiajun.,Gao, Bowen.,He, Xiaosong.,...&Li, Yang.(2022).Opposite impact of DOM on ROS generation and photoaging of aromatic and aliphatic nano- and micro-plastic particles.ENVIRONMENTAL POLLUTION,315.
MLA	Cao, Runzi,et al."Opposite impact of DOM on ROS generation and photoaging of aromatic and aliphatic nano- and micro-plastic particles".ENVIRONMENTAL POLLUTION 315(2022).