老化轮胎磨损颗粒对生菜的毒性研究
Journal: Ecological Environment and Protection DOI: 10.12238/eep.v8i1.2447
Abstract
轮胎磨损颗粒(TWPs)已成为环境微塑料的主要来源之一,其对生态系统构成的潜在威胁受到了越来越多的关注。然而,目前仍缺少关于老化TWPs增强生物毒性作用机理的研究。基于此,本研究旨在深入考察不同老化程度的TWPs对生菜生长发育和氧化应激反应的影响。研究结果表明,相较于未老化的TWPs,老化TWPs对生菜的毒性显著增强。老化15天的TWPs使生菜的鲜重分别降低了18%和35%,而根长则分别缩减了14%和25%。与此同时,老化后的TWPs对生菜产生了更加严重的氧化损伤。综上所述,本研究揭示了TWPs在老化过程中毒性显著增强的现象,这为评估农田中微塑料污染的潜在风险提供了重要的科学依据。
Keywords
轮胎磨损颗粒；持久性自由基；老化；植物毒性；活性氧
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