CAJ | 학술논문

应用荧光发射、三维荧光光谱(EEM)技术研究了重庆主城区长江、嘉陵江水体中溶解有机质(DOM)的荧光光谱特征在2008年4～8月的变化规律,以"5·12"汶川地震及唐家山堰塞湖事件与7和8月丰水期为出发点,结合两江各采样段面的pH,DO,DOC,TOC与EEM指纹特征、荧光指数(f_(450/500))等参数,探讨了两江DOM的组成、分布及其变化规律,着重阐述了EEM中类腐殖酸、类富里酸和类蛋白质3类荧光峰的环境生态行为特征及其影响.实验结果显示两江水体中DOM以类富里酸和类腐殖酸为主,嘉陵江类蛋白质较强,两江水体汇合后,各荧光峰都有所减弱;5月、6月和丰水期两江DOM的类蛋白显著增强,多为陆源所致,丰水期两江各荧光峰在汇合后明显降低.
응용형광발사、삼유형광광보(EEM)기술연구료중경주성구장강、가릉강수체중용해유궤질(DOM)적형광광보특정재2008년4～8월적변화규률,이"5·12"문천지진급당가산언새호사건여7화8월봉수기위출발점,결합량강각채양단면적pH,DO,DOC,TOC여EEM지문특정、형광지수(f_(450/500))등삼수,탐토료량강DOM적조성、분포급기변화규률,착중천술료EEM중류부식산、류부리산화류단백질3류형광봉적배경생태행위특정급기영향.실험결과현시량강수체중DOM이류부리산화류부식산위주,가릉강류단백질교강,량강수체회합후,각형광봉도유소감약;5월、6월화봉수기량강DOM적류단백현저증강,다위륙원소치,봉수기량강각형광봉재회합후명현강저.
The fluorescence emission and excitation emission matrix (EEM) technologies were used to characterize the dissolved organic matter (DOM) in the water body of the Yangtze River and Jialing River around the Chongqing urban areas from April to August 2008. Concerning about the accidents of the Wenchuan's Earthquake in May and Tangjiashan Yansaihu' s effects in June, and the high water period time in the summer in two months of July and August, from the EEM obtained from each sampling station and time, the composition, distribution and their changing features of the DOM in the two rivers were investigated as combined with the water samples' environmental parameters such as pH, DO, DOC with EEM's fingerprint features, f_(450/500) etc; finally the bio-environment behavior effects of the three types of fluorescence peaks were elaborated, where humic-like, ful-vic-like, and protein-like from the five sampling stations' EEMs during the five months were given detailed representation. From the experimental results obtained, the fluorescence peaks are mainly composed of two types of fluorophores: humic-like and protein-like in the two rivers around the Chongqing urban areas during the investigation in five months, the protein-like's peaks value in Jialing River is higher than the values in the Yangtze River, and all the fluorescence peaks in the two Rivers' water body decrease more or less after the two Rivers join in Chun Tan sampling station; the protein-like peak is notably higher after the "5·12" Earthquake period time including May and June and high water period time, which mainly originated from terrestrial sources, but its intensities decreased observably while the water bodies of the two rivers joining together in the Chao Tian-men and Chun Tan's sampling station.