自激荧光在污染水体中轻重金属离子检测研究

Research of Light and Heavy Metal Ions Detection in Polluted Water Under Self Excited Fluorescence

受污染水体中很少存在单一的污染源,导致污染水体中混合污染源难以确定与区分。研究一种在多污染源中各种金属离子的确定和检测问题。提出了采用自激荧光对受污染水体进行检测,对污染物中混有轻重金属的污染水体分别检测,对重金属污染物采用紫外光谱吸收与荧光光谱吸收检测,对轻金属污染物自激荧光光谱检测。形成了活泼金属离子的检测与治理方法,通过分析自激荧光在猝灭过程中产生的特殊光谱特性来进行不同污染物种的金属离子判断,采用紫外光对重金属离子进行二次判断,以达到快速检测的目标。实验结果表明,检测方法能有效检测污染水体中的各金属离子,对受污染水体的判断具有较好的指导性。

The contaminated source single rarely exist in the polluted water, leading to the polluted water in mixed source of pollution is difficult to determine and distinguish. The identification and detection of metal ions in multiple sources are re-searched. The self fluorescence of polluted water body were detected, respectively to detect pollutants mixed with water pol-lution of heavy metals on light, heavy metal pollutants using UV absorption detection and fluorescence spectra of light met-al pollutants, self fluorescence detection. The formation of the active metal ions detection and treatment methods, through the analysis of the special spectral characteristics of self-excited fluorescence in the quenching process for metal ion pollu-tion in different species of judgment, the UV two judgments on heavy metal ions, in order to achieve the goal of rapid detec-tion. The experimental results show that, the metal ion detection method can effectively detect pollution in water bodies, guiding better judgment of polluted water body.