纳米塑料是否会影响Hordeum vulgare L.的Pb吸收?没有
Nataliia Ryzhenko1, Lionel Dutruch1, Briscine Tabo1
1Univ. Rennes, CNRS, Géosciences Rennes - UMR 6118, F-35000 Rennes, France.
NanoImpact
|August 8, 2024
概括
土壤中的聚烯纳米塑料 (PS-NPs) 降低了大麦植物的 (Pb) 吸收,从而降低了Pb的生物可用性. 这种相互作用会影响植物的积累,并引发食品安全问题.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 植物生物学 植物生物学
背景情况:
- 纳米塑料 (NP) 的生物积累主要研究在水生系统中.
- 陆地生态系统与污染物的NP相互作用研究不足.
- 了解土壤植物系统中的NP污染物相互作用对于食品安全至关重要.
研究的目的:
- 研究聚烯纳米塑料 (PS-NP) 对 (Pb) 在Hordeum vulgare L. (大麦) 的生物积累的影响.
- 评估PS-NP如何影响植物内的Pb转移.
- 检查Pb对PS-NP生物可用性的相互影响.
主要方法:
- 使用RHIZOtest设备控制土壤污染.
- 在KOH消化后使用热解气色谱学/质谱学 (Py-GCMS) 在大麦芽中量化50nmPS-NP.
- 在暴露于不同度的PS-NPs和Pb的植物中测量了Pb的吸收和转移.
主要成果:
- 在大麦中,PS-NP显著降低了Pb的生物积累和生物可用性.
- Pb吸收指数显示,在存在PS-NP时,Pb的转位减少.
- 的存在降低了PS-NP的生物可用性,可能是由于聚合或电荷修改.
- 芽中的PS-NP度在土壤总NP的3.9%至5.75%之间.
结论:
- PS-NP 改变了 Pb 在大麦中的生物积累和转移,减少了植物的吸收.
- 在土壤植物系统中NP和金属之间的相互作用是复杂的.
- 需要进一步的研究来了解NP-金属联合效应和食品安全风险.
关键词:
生物积累 生物积累 生物积累黄 (Hordeum vulgare L.) 是一种常见的植物.领导 领导 领导 领导 领导聚乙烯纳米粒子 (PS-NP) 是一种聚乙烯纳米粒子.转移 转移 转移 转移 转移更多相关视频
相关概念视频
Microbial Bioremediation of Pesticides
85
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
85
Bioplastics
70
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
70
Microbial Bioremediation of Plastics
131
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
131


