海水中的纳米颗粒物与铅对海洋微藻抗氧化酶系统的复合影响研究

Nanoparticles (NPs), which are sized at least one dimension less than 100 nanometers, exhibit unique physical characteristics such as a large specific surface area and a unique surface structure that cause high surface reactivity. NPs are increasingly used for industrial and commercial purposes, which may increase the NP release into the environment. Therefore, the potential negative environmental effect of NPs has drawn significant attention in recent years. However, most studies merely focused on the environmental effect of single nanomaterial. It is common to find the co-existence of several toxins in a same place in the real environment. This project will employ standard toxicity test method with the antioxidant enzymes of algae as the indicator. The combined effect of nanoparticles and lead on the antioxidant enzyme system of marine algae in sea water will be investigated. The results of this project will not only make further understanding on the ecotoxicity of nanoparticles, but also provide scientific support for developing the marine environmental criteria.

纳米材料因为具有独特的物理特性及表面结构而大量应用在生活用品中。随着纳米废弃物向环境排放的增加，纳米材料的潜在生态危害性逐渐引起全球的关注。以往的研究大多专注于单一纳米颗粒物的生物效应，然而在实际环境中，多种污染物往往同时存在。本项目拟以海洋微藻细胞中的抗氧化酶的活性变化为指示物，研究海水中的纳米颗粒物与共存的铅对海洋微藻抗氧化酶系统的复合影响，并对其机理进行探讨。该结果不仅可以深化对纳米颗粒物在生态环境效应上的认识，还可以为提高海洋环境质量标准提供科学依据和参考。

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