Heavy metal ion detection using fiber optic sensors

使用光纤传感器检测重金属离子

• 批准号: 396766-2010
• 负责人: Bock, Wojtek
• 金额: $ 14.35万
• 依托单位: Québec en Outaouais
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=487556
• 关键词: Heavy; metal; ion; detection; using

Heavy metals such as arsenic, mercury, lead and cadmium are important pollutants of water, soil and food. They have very high stability and a refractory nature, and are widely distributed in the atmosphere, lithosphere, biosphere and hydrosphere. As industry continues to expand and pollution increases, more and more heavy metals enter the hydrosphere, the soil and the air via domestic sewage and industrial wastewater. Being absorbed by plants and animals and then entering the human body, these heavy metals can cause severe consequences in humans such as bone disease, anemia, brain damage and diabetes. The goal of this project is to conceive, study and implement a novel fiber-optic-based multi-channel sensing system for sensitive and selective detection of heavy metals. A complementary and vertically integrated set of tasks will be undertaken, including (a) development and characterization of novel fluorescent molecular probes for sensing trace amounts of heavy metals such as mercury, lead, arsenic and cadmium in water; and development of (b) methods for integrating these molecular probes and depositing them on optical fibers; (c) methods of modeling, fabrication, instrumentation and testing of efficient fiber-optic sensing devices based on this original combination of fluorescent sensory materials, including both polymer and liquid forms; and (d) methods of high-level system integration with fiber sensing architectures featuring high signal-to-noise ratios and multiple-channel sampling capabilities. The main focus will be to develop a hand-held system for on-site, fast, cheap and multi-target analysis of water without any pre-treatment procedures. Such a system could prove its value as a monitoring tool in Canada in remote locations or during remediation of chemical spills, as well as in underdeveloped countries where it could provide a cheap individual water monitoring tool to hundreds of millions of people.

砷、汞、铅、镉等重金属是水、土壤和食品的重要污染物。它们具有非常高的稳定性和耐火性，广泛分布于大气圈、岩石圈、生物圈和水圈。随着工业的不断扩大和污染的增加，越来越多的重金属通过生活污水和工业废水进入水圈、土壤和空气。这些重金属被植物和动物吸收，然后进入人体，会对人类造成严重后果，如骨骼疾病，贫血，脑损伤和糖尿病。 本计画的目标是构想、研究并实作一种新颖的光纤多通道感测系统，以灵敏且选择性地侦测重金属。将开展一系列相互补充和纵向一体化的任务，包括（a）开发和鉴定用于检测水中痕量重金属如汞、铅、砷和镉的新型荧光分子探针;（B）开发将这些分子探针一体化并将其沉积在光纤上的方法;（c）基于荧光传感材料的这种原始组合（包括聚合物和液体形式）的有效光纤传感装置的建模、制造、仪器和测试方法;以及（d）具有高信噪比和多通道采样能力的光纤传感结构的高级系统集成方法。主要重点将是开发一种手持式系统，用于现场，快速，廉价和多目标的水分析，而无需任何预处理程序。在加拿大偏远地区或化学品泄漏补救期间，以及在不发达国家，这种系统可以证明其作为监测工具的价值，在这些国家，它可以为数亿人提供廉价的个人水监测工具。