...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials science & engineering >Electrochemical sensors for improved detection of paraquat in food samples: A review
【24h】

Electrochemical sensors for improved detection of paraquat in food samples: A review

机译：电化学传感器可改善食品样品中百草枯的检测：综述

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Paraquat (1,10-dimethyl-4,40-dipyridinium chloride), also known as methyl viologen, is widely used as a quaternary ammonium herbicide (broadleaf weed killer) all over the world owing to its excellent effect in plant cells for crop protection and horticultural use. However, it is dangerous because of its high acute toxicity even at low concentrations. Its detection in the environment is therefore necessary. As a consequence of its widespread usage, it causes genotoxic, teratogenic as well as other environmental and ecological adverse impacts. Exposure to PQ leads to a high mortality rate because no specific drug is effective for treatment. Excessive consumption of PQ can cause cellular damage and necrosis in the brain, heart, lungs, liver, and kidneys. The diversity and sensitivity of the analyses currently required have forced the experimenter to use more advanced and efficient techniques, which can provide qualitative and quantitative results in complex environments. Electrochemical methods generally meet these criteria while offering other advantages to achieve excellent accuracy and fast handling.This paper provides an overview of the determination of PQ using electrochemical methods combined with several modified electrodes in food samples, including milk, apple juice, tomato juice, and potato juice. Emphasis was placed on the most relevant modifiers used to generate high selectivity and sensitivity such as noble metals, metallic nanoparticles, polymers, biomolecules, clay, and apatite minerals. Comprehensively, it is strongly convincing that the synergy between the sensor substrate and the modifier architecture gives the electrodes a high capacity to detect paraquat in complex matrices such as food. In line with the context, information's on the mechanism of electrooxidation or reduction of PQ has been reported with the discussion of some future prospects and some insights. To the best of our knowledge, there is no review article relating the electrochemical determination of paraquat.
机译：百草枯（1,10-二甲基-4,40-联吡啶鎓氯化物），也称为甲基紫精，由于其在植物细胞中的优异保护作用，在世界范围内被广泛用作季铵盐除草剂（阔叶除草剂）。和园艺用途。但是，由于即使在低浓度下也具有很高的急性毒性，因此很危险。因此，必须在环境中对其进行检测。由于其广泛使用，它会引起遗传毒性，致畸性以及其他环境和生态方面的不利影响。暴露于PQ会导致较高的死亡率，因为没有特定的药物可有效治疗。过量摄入PQ会导致脑，心脏，肺，肝和肾脏的细胞损伤和坏死。当前所需分析的多样性和敏感性迫使实验者使用更先进，更有效的技术，这些技术可以在复杂的环境中提供定性和定量的结果。电化学方法通常可以满足这些标准，同时还具有其他优点，可实现出色的准确性和快速处理。本文概述了电化学方法与食品，牛奶，苹果汁，番茄汁和土豆汁。重点放在用于产生高选择性和灵敏度的最相关的改性剂上，例如贵金属，金属纳米颗粒，聚合物，生物分子，粘土和磷灰石矿物。总体而言，强烈说服力的是，传感器基板和修饰剂结构之间的协同作用使电极具有检测复杂基质（例如食物）中百草枯的高能力。根据上下文，已经报道了有关电氧化或PQ还原机理的信息，并讨论了一些未来前景和见解。据我们所知，尚无有关百草枯电化学测定的评论文章。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号