有机-金属配合物的设计及其对水质中污染物质的检测研究

The pollutions of water resources by cyanide and hydrogen sulfide cause serious threat to human health. In this project, we targeted at detecting cyanide and hydrogen sulfide simultaneously based on colorimetric and fluorescent complex sensors, and exploring the possible detection mechanisms. Zn2+ coordination unit (carbonyl-substituted o-hydroxy azobenzene), and Hg2+ coordination unit (thiol-thiazoline or dansyl amide), were combined into one detection system, the distance of these two units was adjusted by the alkyl chain length, the possible detection mechanisms for CN- and H2S were given: binding site-signaling subunit approach or displacement approach; Through a series of experimental demonstration, complex sensors with superior performance will be selected and coated on TLC plate in order to perform real-time monitoring of H2S and CN- in water environment of the Yongjiang River. This project will establish a laboratory technical reserves for rapid monitoring, serving the environmental protection of Yongjiang River and for the prevention of drinking water safety, providing theoretical basis for the preparation of complexes-based nano-materials in order to remove H2S and CN- timely and effectively in water; providing theoretical foundation for developing multi-functional colorimetric and fluorescent sensing systems in detecting versatile species of water pollutants, thus, the type and polluted area of pollutants will be clearly detected and the treatment proposal will be made appropriately.

氰化物和硫化氢对水资源的污染，严重威胁人类健康。本项目的研究目标是利用配合物比色荧光传感器同时检测水质中的氰化物和硫化氢并探索其检测机理。通过将Zn2+配位基团（羰基修饰邻羟基偶氮苯）和Hg2+配位基团（巯基噻唑啉或丹磺酰胺）拟合到同一检测体系中，利用烷基链长调控两种配位基团之间的距离，提出氰化物和硫化氢检测的可能机理：键合部位-信号单元机理或取代机理；通过一系列实验论证，筛选出性能优越的配合物传感器负载于TLC板，应用于邕江水环境中氰化物和硫化氢的现场监测。本项目研究将建立实验室快速监测技术储备，服务于邕江环境保护和饮用水安全防治工作，为制备配合物纳米材料及时有效地去除水质中的CN-和H2S提供理论基础；针对水质中污染物质种类的多样性，为开发其它污染物质的多功能比色荧光传感检测体系，提供理论依据，以便在较短时间内摸清污染物的种类以及污染范围，制订出相应的处理方案。

氰化物（CN-）和硫化氢(H2S) 是急性剧毒物质，严重威胁人类健康。本课题针对水质中CN-和H2S污染物检测的迫切需求，设计、合成了单配体和双配体类金属配合物传感器并探索其对阴离子的响应性和检测机理。传感器中有机分子结构的细微差异和金属种类的不同对配合物传感器性能的影响是难以预测的。因此，在遵循基本理论的基础上，我们通过实验的方法来验证单双配体金属配合物传感器的应用性能和机理，为开发其它类型污染物质的传感检测技术，提供理论依据。