The release pathway of dissolved organic matter (DOM) in sediments of the Xinkaihe River in Shenyang, as well as the effect of time, temperature, pH, sediment particle size, salinity, and dissolved organic carbon (DOC) concentration in the overlying water on the release of DOM in sediments was evaluated. In addition, the effect of release of DOM in sediments on the spectroscopy characteristics of DOM in the overlying water was also examined. The results showed that the mixing action of interstitial water had the greatest influence on the release of DOM in sediments, which was followed by the static release of surface sediment, while the release of suspended particles made slight influence on the release of DOM in sediments. The release amount of DOM in sediments increased with the increase of temperature, pH, sediment particle size, and the salinity. When the DOC concentration in the overlying water was relatively high, the DOM moved from the overlying water to the sediment. The disturbance could affect the migration of DOM in sediments. The fulvic acid- and aromatic protein-like fluorophores were dominant in fluorescent materials in DOM in sediments. The fluorescent materials with excitation wavelength of 280~300nm and 320~380nm were the main fluorescent materials which were released from the sediment to the overlying water. Moreover, the disturbance promoted the release of fluorescent materials from the sediment to the overlying water.
韩琦, 薛爽, 刘影, 洪悦, 刘红. 河流底泥中溶解性有机物的释放途径及影响因素研究[J]. 中国环境科学, 2016, 36(12): 3737-3749.
HAN Qi, XUE Shuang, LIU Ying, HONG Yue, LIU Hong. Release pathway and influencing factors of dissolved organic matter in river sediments. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(12): 3737-3749.
Yang L Y, Guo W D, Chen N W, et al. Influence of a summer storm event on the flux and composition of dissolved organic matter in a subtropical river, China[J]. Applied Geochemistry, 2013,28(3):164-171.
Baghoth S A, Sharma S K, Amy G L. Tracking natural organic matter (NOM) in a drinking water treatment plant using fluorescence excitation-emission matrices and PARAFAC[J]. Water Research, 2011,45(2):797-809.
[5]
Yang X, Meng F, Huang G, et al. Sunlight-induced changes in chromophores and fluorophores of wastewater-derived organic matter in receiving waters-the role of salinity[J]. Water Research, 2014,62(10):281-292.
[6]
Nguyen H V, Lee M, Hur J, et al. Variations in spectroscopic characteristics and disinfection byproduct formation potentials of dissolved organic matter for two contrasting storm events[J]. Journal of Hydrology, 2013,481(5):132-142.
[7]
Huang H, Wu Q Y, Hu H Y, et al. Dichloroacetonitrile and dichloroacetamide can form independently during chlorination and chloramination of drinking waters, model organic matters, and wastewater effluents[J]. Environmental Science & Technology, 2012,46(19):10624-10631.
Johnsson W, Logan B. Enhanced transport of bacteria in porous media by sediment-phase and aqueous-phase and aqueous-phase natural organic matter[J]. Water Res, 1996,30(100):923-931.
Yang L Y, Guo W D, Chen N W, et al. Influence of a summer storm event on the flux and composition of dissolved organic matter in a subtropical river, China[J]. Applied Geochemistry, 2013,28(3):164-171.
Baghoth S A, Sharma S K, Amy G L. Tracking natural organic matter (NOM) in a drinking water treatment plant using fluorescence excitation-emission matrices and PARAFAC[J]. Water Research, 2011,45(2):797-809.
[5]
Yang X, Meng F, Huang G, et al. Sunlight-induced changes in chromophores and fluorophores of wastewater-derived organic matter in receiving waters-the role of salinity[J]. Water Research, 2014,62(10):281-292.
[6]
Nguyen H V, Lee M, Hur J, et al. Variations in spectroscopic characteristics and disinfection byproduct formation potentials of dissolved organic matter for two contrasting storm events[J]. Journal of Hydrology, 2013,481(5):132-142.
[7]
Huang H, Wu Q Y, Hu H Y, et al. Dichloroacetonitrile and dichloroacetamide can form independently during chlorination and chloramination of drinking waters, model organic matters, and wastewater effluents[J]. Environmental Science & Technology, 2012,46(19):10624-10631.
Johnsson W, Logan B. Enhanced transport of bacteria in porous media by sediment-phase and aqueous-phase and aqueous-phase natural organic matter[J]. Water Res, 1996,30(100):923-931.