PMID- 37639827 OWN - NLM STAT- MEDLINE DCOM- 20230925 LR - 20230925 IS - 1090-2414 (Electronic) IS - 0147-6513 (Linking) VI - 264 DP - 2023 Oct 1 TI - Aging rate, environmental risk and production efficiency of the low-density polyethylene (LDPE) films with contrasting thickness in irrigated region. PG - 115399 LID - S0147-6513(23)00903-X [pii] LID - 10.1016/j.ecoenv.2023.115399 [doi] AB - Physical thickness of low-density polyethylene (LDPE) films might determine the release rate of phthalic acid esters (PAEs) & structural integrity and affect production efficiency. However, this critical issue is still unclear and little reported. Aging effects were evaluated in LDPE films with the thickness of 0.006, 0.008, 0.010 and 0.015 mm in a maize field of irrigation region. The Scanning electron microscope (SEM) results showed that the proportion of damaged area (Dam) to total area of LDPE films was massively lowered with increasing thickness after aging. The highest and lowest Dam was 32.2% and 3.5% in 0.006 and 0.015 mm films respectively. Also, the variations in peak intensity of asymmetric & symmetrical stretching vibrations (ASVI & SSVI) were detected using Fourier transform infrared spectrum (FTIR), indicating that the declines in peak intensity tended to be slower with thickness. Interestingly, the declines in physical integrity were tightly associated with increasing exhalation rate of PAEs. Average releasing rate of PAEs was 38.2%, 31.4%, 31.5% and 19.7% in LDPE films from 0.006 to 0.015 mm respectively. Critically, thicker film mulching can lead to greater soil water storage at plough layer (SWS-PL) and better thermal status, accordingly harvesting higher economic benefit. Therefore, LDPE film thickening may be a solution to reduce environmental risk but improve production efficiency in arid region. CI - Copyright (c) 2023 The Authors. Published by Elsevier Inc. All rights reserved. FAU - Xiong, Xiao-Bin AU - Xiong XB AD - State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China. FAU - Zhao, Ze-Ying AU - Zhao ZY AD - State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China. FAU - Wang, Peng-Yang AU - Wang PY AD - State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China. FAU - Mo, Fei AU - Mo F AD - College of Agronomy, Northwest A&F University, Yangling, Shaanxi, PR China. FAU - Zhou, Rui AU - Zhou R AD - School of Ecology and Environmental Science, Yunnan University, Kunming 650091, PR China. FAU - Cao, Jing AU - Cao J AD - State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China. FAU - Liu, Shu-Tong AU - Liu ST AD - State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China. FAU - Zhang, Feng AU - Zhang F AD - State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China. FAU - Wesly, Kiprotich AU - Wesly K AD - State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China. FAU - Wang, Yi-Bo AU - Wang YB AD - Gansu Key Laboratory of Resource Utilization of Agricultural Solid Wastes, Tianshui Normal University, Tianshui 741000, PR China. FAU - Fang, Xiang-Wen AU - Fang XW AD - State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China. FAU - Tao, Hong-Yan AU - Tao HY AD - State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China. FAU - Xiong, You-Cai AU - Xiong YC AD - State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China. Electronic address: xiongyc@lzu.edu.cn. LA - eng PT - Journal Article DEP - 20230826 PL - Netherlands TA - Ecotoxicol Environ Saf JT - Ecotoxicology and environmental safety JID - 7805381 RN - 9002-88-4 (Polyethylene) RN - 0 (Soil) SB - IM MH - *Polyethylene MH - *Light MH - Soil MH - Vibration OTO - NOTNLM OT - Aging rate OT - Dryland maize OT - LDPE film thickness OT - PAEs OT - Water productivity COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/08/29 00:41 MHDA- 2023/09/25 06:42 CRDT- 2023/08/28 18:03 PHST- 2023/06/01 00:00 [received] PHST- 2023/08/15 00:00 [revised] PHST- 2023/08/20 00:00 [accepted] PHST- 2023/09/25 06:42 [medline] PHST- 2023/08/29 00:41 [pubmed] PHST- 2023/08/28 18:03 [entrez] AID - S0147-6513(23)00903-X [pii] AID - 10.1016/j.ecoenv.2023.115399 [doi] PST - ppublish SO - Ecotoxicol Environ Saf. 2023 Oct 1;264:115399. doi: 10.1016/j.ecoenv.2023.115399. Epub 2023 Aug 26.