Wang Li-sha, Hu Hong-ying, Koichi Fujie
State Key Joint Laboratory of Environment Simulation and Pollution Control, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
Huan Jing Ke Xue. 2007 Jul;28(7):1524-8.
The change of DOM (dissolve organic matter) during wastewater chlorine and chlorine dioxide disinfections was characterized by 3DEEM (three-dimensional excitation emission matrix fluorescence spectroscopy) method. The results showed that the DOM in wastewater tested was quite different from drinking water and surface waters. It contained more aromatic proteins and soluble microbial products, and the humus were predominately microbially derived and had less aromatic moieties. After chlorine and chlorine dioxide disinfections, the excitation or emission wavelength of EEM (excitation emission matrix) peaks for aromatic proteins and soluble microbial products shifted to longer wavelength by several nanometers, which was probably caused by the decomposition of aromatic structure; while the excitation or emission wavelength of EEM peaks for humus shifted to shorter wavelength by several to more than twenty nanometers, which was different from surface waters, and this phenomenon was considered to be caused by their different resources. Similar to the change in genotoxicity, ammonia nitrogen significantly influenced the change in EEM during chlorine disinfection, but not during chlorine dioxide disinfection.
采用三维激发发射矩阵荧光光谱法（3DEEM）对废水氯消毒和二氧化氯消毒过程中溶解性有机物（DOM）的变化进行了表征。结果表明，受试废水中的DOM与饮用水和地表水有很大差异。它含有更多的芳香族蛋白质和可溶性微生物产物，腐殖质主要来源于微生物且芳香部分较少。氯消毒和二氧化氯消毒后，芳香族蛋白质和可溶性微生物产物的激发发射矩阵（EEM）峰的激发或发射波长向长波长方向移动了几纳米，这可能是由于芳香结构的分解；而腐殖质的EEM峰的激发或发射波长向短波长方向移动了几纳米至二十多纳米，这与地表水不同，这种现象被认为是由它们不同的来源引起的。与遗传毒性的变化类似，氨氮在氯消毒过程中显著影响EEM的变化，但在二氧化氯消毒过程中则不然。
