Are recyclable plastics eco-friendly? Recycled PVC microplastics show higher toxicity than pristine PVC on Vallisneria natans, regardless of Cadmium

doi:10.1016/j.aquatox.2024.107024

KIB OpenIR

	Are recyclable plastics eco-friendly? Recycled PVC microplastics show higher toxicity than pristine PVC on Vallisneria natans, regardless of Cadmium
	Han, Xiaohui; Gao, Yuxuan; Yang, Li; Wei, Junxin; Li, Xi; Wang, Lei; Zhang, Xinhou
	2024
发表期刊	AQUATIC TOXICOLOGY
ISSN	0166-445X
卷号	273 页码:107024
摘要	As environmental awareness increases, the use of recyclable plastics has risen. However, it is currently unclear whether recycled microplastics (MPs) pose a lesser or greater environmental risk than pristine MPs. Cadmium (Cd), known for its toxicity to most organisms, can bind with MPs and accumulate in sediments. Few studies have explored the environmental risks posed by the coexistence of recycled MPs and pristine MPs with Cd to rooted macrophytes. We investigated the effects of recycled PVC MPs (R-PVC-MPs) and pristine PVC MPs (PVC-MPs) on Vallisneria natans in the presence and absence of Cd. Results showed that at moderate and high Cd levels, R-PVCMPs reduced plant Cd enrichment. Despite this, the fresh weight of V. natans exposed to R-PVC-MPs was significantly lower than those exposed to PVC-MPs. Furthermore, R-PVC-MPs had more negative impacts on the physiological traits of V. natans than PVC-MPs, as chlorophyll was significantly reduced across all Cd levels. At high Cd levels, both R-PVC-MPs and PVC-MPs caused significantly high oxidative stress, with no significant differences observed. The PCoA plot showed that different MPs cause noticeable variations within the same Cd concentration. The trait network diagrams illustrated strong interactions among traits, with R-PVC-MPs showing the highest complexity. Lower average degree and decreased edge density indicate that traits of plants with RPVC-MPs addition are more independent of each other. Our findings suggest that recycled PVC MPs pose a greater environmental risk than pristine PVC MPs, offering reference for assessing the risks of recycled plastics in freshwater ecosystems.
DOI	10.1016/j.aquatox.2024.107024
WOS记录号	WOS:001271711000001
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/76113
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Han, Xiaohui,Gao, Yuxuan,Yang, Li,et al. Are recyclable plastics eco-friendly? Recycled PVC microplastics show higher toxicity than pristine PVC on Vallisneria natans, regardless of Cadmium[J]. AQUATIC TOXICOLOGY,2024,273:107024.
APA	Han, Xiaohui.,Gao, Yuxuan.,Yang, Li.,Wei, Junxin.,Li, Xi.,...&Zhang, Xinhou.(2024).Are recyclable plastics eco-friendly? Recycled PVC microplastics show higher toxicity than pristine PVC on Vallisneria natans, regardless of Cadmium.AQUATIC TOXICOLOGY,273,107024.
MLA	Han, Xiaohui,et al."Are recyclable plastics eco-friendly? Recycled PVC microplastics show higher toxicity than pristine PVC on Vallisneria natans, regardless of Cadmium".AQUATIC TOXICOLOGY 273(2024):107024.

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