Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/116530
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Type: | Journal article |
Title: | Quantitative evaluation and in vivo visualization of mercury ion bioaccumulation in rotifers by novel aggregation-induced emission fluorogen nanoparticles |
Author: | Jiang, Y. He, T. Chen, Y. Ruan, Y. Zhou, Y. Tang, B.Z. Qin, J. Tang, Y. |
Citation: | Environmental Science: Nano, 2017; 4(11):2186-2192 |
Publisher: | The Royal Society of Chemistry |
Issue Date: | 2017 |
ISSN: | 2051-8153 2051-8161 |
Statement of Responsibility: | Yusheng Jiang, Tao He, Yuncong Chen, Yinlan Ruan, Yabin Zhou, Ben Zhong Tang, Jianguang Qin and Youhong Tang |
Abstract: | In this study, a specifically-designed aggregation-induced emission fluorogen (AIEgen) with nanoparticle aggregates was used to quantitatively evaluate the bioaccumulation of Hg2+ and visualize Hg2+ kinetics in vivo within the rotifer Brachionus plicatilis for the first time. Quantitative results showed that a sharp drop in Hg2+ concentration occurred at the very beginning in the medium containing rotifers and Hg2+, showing a quick initial uptake of Hg2+ by the rotifers, and then the concentration in the medium plateaued after 5 min. With an increase in rotifer density, the amount of bioaccumulation increased in the rotifer. However, the bioaccumulation efficiency of Hg2+ decreased from 5.28 mu g mg -1 h -1 at a low rotifer density of 0.093 mg ml -1 to 2.61 mu g mg -1 h -1 at a high rotifer density of 0.375 mg mL-1. Moreover, the fluorescence images and spectra results illustrate that the ingestion of Hg2+ by the rotifer was via its mouth surrounded by the ciliary corona to the digestive tract, and Hg2+ could not permeate into the body integument through diffusion during the study period. Hg2+-induced fluorescence in rotifers dissipated in 6 h after staining, possibly through defecation and excretion. This study indicates that inorganic mercury can be quickly ingested by a rotifer via feeding, but is unlikely deposited as methylated mercury in rotifer tissues. |
Description: | Print edition (ISSN 2051-8153) is obsolete. eISSN entered is active. |
Rights: | This journal is © The Royal Society of Chemistry 2017 Open Access Article. Published on 12 September 2017. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. |
DOI: | 10.1039/c7en00599g |
Published version: | http://dx.doi.org/10.1039/c7en00599g |
Appears in Collections: | Aurora harvest 3 IPAS publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_116530.pdf | Published version | 2.7 MB | Adobe PDF | View/Open |
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