染色探头附着多孔聚合物单体作为实时固态传感器,用于检测超微量有毒离子
Anju Pavoor Veedu1, Satheesh Kuppusamy1, Akhila Maheswari Mohan1
1Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India.
Environmental research
|October 14, 2023
概括
研究人员开发了一种新的聚合物传感器,用于检测水中的有毒离子. 这种固态系统为环境监测提供快速,选择性和可重复使用的超微量 (Hg2+) 检测.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 分析化学 分析化学
背景情况:
- 越来越多的水污染需要先进的方法来检测有毒的重金属离子.
- (Hg2+) 离子对环境和健康构成重大风险,需要敏感的检测技术.
- 染色材料为检测特定离子提供了一种视觉方法.
研究的目的:
- 开发一种简单,高效,固态色度传感器,用于超微量离子检测.
- 用一个多孔聚合物模板为染色体离子受体的均输注和装饰.
- 为了在环境样本中实现对Hg2+的特定目标传感.
主要方法:
- 从甘氨基甲基烯酸 (GMA) 和乙烯基甘醇二甲基烯酸 (EGDMA) 合成一个中/宏多孔聚合物模板.
- 在聚合物框架上注入一种染色体离子受体,4-(硫-2-) -N,N-二甲基氨 (BTDA).
- 使用电子显微镜,光谱 (X射线衍射,光电子,能量散射X射线,光学) 和表面/孔径分析对传感器材料进行表征.
主要成果:
- 聚GMA-co-EGDMA) -BTDA传感器显示Hg2+的线性响应范围为1-150μg/L.
- 达到0.29μg/L的低检测极限和Hg2+的0.97μg/L的量化极限.
- 在环境样本中表现出快速反应 (40秒),明显的颜色变化 (黄色到橄) 和高选择性 (≥99.2%的回收),可重复使用长达七个周期.
结论:
- 开发的固态传感器提供了一种高效可靠的方法来检测超微量离子.
- 多孔聚合物模板促进染色体受体的有效固定,以提高传感性能.
- 传感器显示了现场实时监测环境水中的污染的潜力.
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