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Updated: Jan 11, 2026

Salinity-dependent Toxicity Assay of Silver Nanocolloids Using Medaka Eggs
06:29

Salinity-dependent Toxicity Assay of Silver Nanocolloids Using Medaka Eggs

Published on: March 18, 2016

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离子强度调节了酸盐涂层的银纳米颗粒对复杂环境矩阵中的大夫尼大菌的尺寸控制生态毒性

Ping Luo1, Zhenghao Xu1, Jiageng Zhang2

  • 1School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, People's Republic of China.

Environmental geochemistry and health
|November 15, 2025
PubMed
概括

离子强度显著影响银纳米粒子 (AgNP) 对水生生物的毒性. 较高的离子强度最初通过促进聚合来降低AgNP的毒性,但超高水平可以通过颗粒分解来增加它,这表明当前的法规可能低估了风险.

关键词:
达夫尼亚大 (Daphnia magna) 是一个大的植物.水生生物 水生生物 水生生物生态毒理学 生态毒理学环境矩阵环境矩阵离子强度强度 离子强度银纳米颗粒 银纳米粒子

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Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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