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首页> 外文期刊>Ecotoxicology and Environmental Safety >Ecotoxicological effects of carbofuran and oxidised multiwalled carbon nanotubes on the freshwater fish Nile tilapia: Nanotubes enhance pesticide ecotoxicity
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Ecotoxicological effects of carbofuran and oxidised multiwalled carbon nanotubes on the freshwater fish Nile tilapia: Nanotubes enhance pesticide ecotoxicity

机译：呋喃丹和氧化的碳纳米管对淡水鱼尼罗罗非鱼的生态毒理作用：纳米管增强了农药的生态毒性

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摘要

The interactions of carbon nanotubes with pesticides, such as carbofuran, classical contaminants (e.g., pesticides, polyaromatic hydrocarbons, heavy metals, and dyes) and emerging contaminants, including endocrine disruptors, are critical components of the environmental risks of this important class of carbon-based nanomaterials. In this work, we studied the modulation of acute carbofuran toxicity to the freshwater fish Nile tilapia (Oreochromis niloticus) by nitric acid treated multiwalled carbon nanotubes, termed HNO_3-MWCNT. Nitric acid oxidation is a common chemical method employed for the purification, functionalisation and aqueous dispersion of carbon nanotubes. HNO_3-MWCNT were not toxic to Nile tilapia at concentrations ranging from 0.1 to 3.0 mg/L for exposure times of up to 96 h. After 24,48, 72 and 96 h, the LC_(50) values of carbofuran were 4.0, 3.2, 3.0 and 2.4 mg/mL, respectively. To evaluate the influence of carbofuran-nanotube interactions on ecotoxicity, we exposed the Nile tilapia to different concentrations of carbofuran mixed together with a non-toxic concentration of HNO_3-MWCNT (1.0 mg/ L.). After 24, 48, 72, and 96 h of exposure, the LC_(50) values of carbofuran plus nanotubes were 3.7, 1.6, 0.7 and 0.5 mg/L, respectively. These results demonstrate that HNO_3-MWCNT potentiate the acute toxicity of carbofuran, leading to a more than five-fold increase in the LC_(50) values. Furthermore, the exposure of Nile tilapia to carbofuran plus nanotubes led to decreases in both oxygen consumption and swimming capacity compared to the control. These findings indicate that carbon nanotubes could act as pesticide carriers affecting fish survival, metabolism and behaviour.
机译：碳纳米管与农药（例如，呋喃丹），经典污染物（例如，农药，聚芳烃，重金属和染料）以及新兴污染物（包括内分泌干扰物）的相互作用，是此类重要碳排放环境风险的重要组成部分。基纳米材料。在这项工作中，我们研究了硝酸处理的多壁碳纳米管（称为HNO_3-MWCNT）对淡水鱼尼罗罗非鱼（Oreochromis niloticus）的急性呋喃呋喃毒性的调节作用。硝酸氧化是用于碳纳米管的纯化，功能化和水分散的常用化学方法。 HNO_3-MWCNT对尼罗罗非鱼无毒，浓度范围为0.1至3.0 mg / L，暴露时间长达96小时。 24,48、72和96小时后，呋喃丹的LC_（50）值分别为4.0、3.2、3.0和2.4 mg / mL。为了评估呋喃丹-纳米管相互作用对生态毒性的影响，我们将尼罗罗非鱼暴露于不同浓度的呋喃丹与无毒浓度的HNO_3-MWCNT（1.0 mg / L）混合。暴露24、48、72和96 h后，呋喃丹加纳米管的LC_（50）值分别为3.7、1.6、0.7和0.5 mg / L。这些结果表明，HNO_3-MWCNT增强了呋喃丹的急性毒性，导致LC_（50）值增加了五倍以上。此外，与对照组相比，尼罗罗非鱼对呋喃丹加纳米管的暴露导致氧气消耗和游泳能力的降低。这些发现表明，碳纳米管可以充当农药载体，影响鱼类的生存，新陈代谢和行为。

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  • 来源
    《Ecotoxicology and Environmental Safety》 |2015年第1期|131-137|共7页
  • 作者

    Janaina Campos-Garcia; Diego Stefani T. Martinez; Oswaldo L. Alves; Antonio Fernando Gervasio Leonardo; Edison Barbieri;

  • 作者单位

    Programa de Pos Graduacao do Instituto de Pesca-SP- APTA-SAA/SP, Caixa Postal 157, Cananeia, SP 11990-000, Brazil;

    Laboratorio de Quimica do Solido (LQES), Instituto de Quimica, Universidade Estadual de Campinas-UNICAMP, Caixa Postal 6154, Campinas, SP 13081-970, Brazil,Laboratorio Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materials - CNPEM, Caixa Postal 6192, 13083-970 Campinas, SP, Brazil;

    Laboratorio de Quimica do Solido (LQES), Instituto de Quimica, Universidade Estadual de Campinas-UNICAMP, Caixa Postal 6154, Campinas, SP 13081-970, Brazil;

    Polo Regional Vale do Ribeira. Rodovia BR 116, km 460 Caixa Postal 122-CEP 11900-000 Registro, SP, Brazil;

    Programa de Pos Graduacao do Instituto de Pesca-SP- APTA-SAA/SP, Caixa Postal 157, Cananeia, SP 11990-000, Brazil,Instituto de Pesca - APTA-SAA/SP, Caixa Postal 157, Cananeia, SP 11990-000, Brazil;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Interaction; Carbon nanotubes; Aquatic ecotoxicology; Nanotoxicity;

    机译：相互作用;碳纳米管;水生生态毒理学;纳米毒性;

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