The effects of CdSe/ZnS quantum dots on autofluorescence properties and growth of algae Desmodesmus communis: dependence on cultivation medium†

IF 5.1 2区环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Environmental Science: Nano Pub Date : 2024-03-11 DOI:10.1039/D3EN00955F

Agnė Kalnaitytė-Vengelienė, Danguolė Montvydienė, Emilija Januškaitė, Živilė Jurgelėnė, Mindaugas Kazlauskas, Nijolė Kazlauskienė and Saulius Bagdonas

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Abstract

The discovery and development of quantum dots (QDs), which are tiny luminescent nanoparticles (NPs), was awarded the Nobel Prize in Chemistry in 2023, highlighting the prospects of their technological applications. However, it is still not very well known how such NPs could affect aquatic ecosystems, especially given that natural conditions are varied and unpredictable. Thus, the aim of this study was to determine the influence of natural and artificial aqueous media on the interaction of CdSe/ZnS–COOH QDs with Desmodesmus communis algae using fast non-invasive optical methods. The cumulative short-term effects of QDs on algae growth and population structure were evaluated and changes in the photosynthetic activity of green algae were demonstrated using pulse-amplitude modulated (PAM) fluorometry. The present study demonstrated that natural and artificial cultivation media had different effects on the growth pattern, physiological processes and photoadaptation properties of algae as well as altering their responses to core/shell QDs. Thus, to fully assess the environmental risk of NPs, it is necessary to evaluate the simultaneous interactions of NPs with abiotic and biotic factors using a combination of physico-optical and ecotoxicological tools.

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CdSe/ZnS量子点对藻类Desmodesmus communis的自发荧光特性和生长的影响：对培养基的依赖性

量子点（QDs）是一种微小的发光纳米粒子（NPs），它的发现和开发获得了 2023 年诺贝尔化学奖，彰显了其技术应用前景。然而，人们对这类 NPs 如何影响水生生态系统仍然知之甚少，尤其是考虑到自然条件是多样且不可预测的。因此，本研究旨在利用快速无创光学方法确定天然和人工水介质对 CdSe/ZnS-COOH QDs 与 Desmodesmus communis 藻类相互作用的影响。研究评估了 QDs 对藻类生长和种群结构的短期累积效应，并利用脉冲幅度调制（PAM）荧光测定法证明了绿藻光合作用活性的变化。本研究表明，天然培养基和人工培养基对藻类的生长模式、生理过程和光适应特性有不同的影响，同时也改变了它们对核/壳 QDs 的反应。因此，要全面评估 NPs 的环境风险，有必要结合物理光学和生态毒理学工具，同时评估 NPs 与非生物因素和生物因素的相互作用。

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来源期刊

Environmental Science: Nano CHEMISTRY, MULTIDISCIPLINARY-ENVIRONMENTAL SCIENCES

CiteScore

12.20

自引率

5.50%

发文量

290

审稿时长

2.1 months

期刊介绍： Environmental Science: Nano serves as a comprehensive and high-impact peer-reviewed source of information on the design and demonstration of engineered nanomaterials for environment-based applications. It also covers the interactions between engineered, natural, and incidental nanomaterials with biological and environmental systems. This scope includes, but is not limited to, the following topic areas: Novel nanomaterial-based applications for water, air, soil, food, and energy sustainability Nanomaterial interactions with biological systems and nanotoxicology Environmental fate, reactivity, and transformations of nanoscale materials Nanoscale processes in the environment Sustainable nanotechnology including rational nanomaterial design, life cycle assessment, risk/benefit analysis