光化学降解溶解有机物及其对生物过程的影响

doi:10.7517/j.issn.1674-0475.2004.04.298

摘要/Abstract

摘要： 溶解有机物对控制海洋和淡水水生系统的化学、生物和物理特性有重要的影响.光化学降解溶解有机物改变了生态体系的溶解有机碳、有机物的分子量及光学特性,并且产生复杂的反应性氧化合物、二氧化碳、一氧化碳、小分子量的有机酸、氨基酸、二硫化碳等,对生物过程有重要的影响.本文简要综述了光化学降解溶解有机物的过程机理及其对生物过程的影响.

关键词: 光化学, 溶解有机物, 生物过程

Abstract: Dissolved organic matter (DOM) plays an important role on regulating the chemical,biological and physical characteristics of marine and freshwater ecosystems.Photodegradation of DOM results in reduction of dissolved organic carbon (DOC),average molecular weights,changes in water optical properties and in the production of complex mixture of reactive oxygen species and carbon photoproducts.The photoproducts mainly are inorganic compounds(e.g.carbon monoxide,carbon dioxide and other dissolved inorganic carbon (DIC))that represent direct photochemical mineralization of the DOM,other photoproducts are low molecular weight organic molecules,amino acids and carbon disulphide and carbonyl sulphide,which have a great impact on the biological processes.

Key words: photochemistry, dissolved organic matter, biological processes

中图分类号:

汪学军, 楼涛. 光化学降解溶解有机物及其对生物过程的影响[J]. 影像科学与光化学, 2004, 22(4): 298-305.

WANG Xue-jun, LOU Tao. Photodegradation of Dissolved Organic Matterand Its Impact on the Biologic Processes[J]. Imaging Science and Photochemistry, 2004, 22(4): 298-305.

参考文献

[1] Zsolnay A.Dissolved Organic Matter (DOM): artefacts definitions and functions[J]. Geoerma,2003,113(3-4):187-209.
[2] Cai W, Wang Y. The chemistry, fluxes and sources of carbon dioxide in the estuarine water of the Satilla and Altamaha Rivers Georgia[J]. Limnol. Oceanogr., 1998,43 (4): 657-668.
[3] Aluwihare L, Repeta D, Chen R. Chemical composition and cycling of dissolved organic matter in the mid-Atlantic bight[J]. Deep-Sea Research Ⅱ, 2002,49 (20): 4421-4437.
[4] Mopper K,Zhou X. Kieber R J. Photochemical degradation of dissolved organic carbon and its impact on the oceanic carbon cycle[J]. Nature, 1991,353,60-62.
[5] 王春霞,彭安不同来源腐殖酸的光解及过氧化氢对其影响[J].环境科学学报,1996,16(3):270-275Wang C X, Peng A. Photodegradation of fulvic acids of various origins and the effects of hydrogen peroxide[J]. Journal of Environmental Sciences,1996,16(3):270-275.
[6] Wetzel R G, Hatcher P G. Bianchi T S. Natural photolysis by ultraviolet irradiance of recalcitrant dissolved organic matter to simple substrate for rapid bacterial metabolism[J]. Limnol. Oceanogr., 1995,40(6):1369-1380.
[7] Clark C D, Jimenez-Morais J, Jone G, Zanardi-Lamardo E, Moore A A, Zike R G. A time-resolved fluorescence study of dissolved organic matter in a riverine to marine transition zone[J]. Marine Chemistry,2002,78(2-3): 121-135.
[8] Castillo A E, Coble P G, Morell J M, Lopez J M, Corredor J E. Analysis of the optical properties of the Orinoco river plume by absorption and fluorescence spectroscopy[J]. Marine Chemistry, 1999,66(1): 35-51.
[9] Frimmel F H. Photochemical aspects related to humic substances[J]. Environment International, 1994,20(3): 373-385.
[10] Miles C J, Brezonik P L. Oxygen consumption in humic-colored waters by a photochemical ferrous-ferric catalytic cy cle[J]. Environmental Science & Technology, 1981,15(9): 1089-1095.
[11] Emmenegger L, Schonenberger R, Sigg L, Sulzberger B. Light-induce redox cycling of iron in circumneutral lakes[J].Limnol. Oceangr., 2001,46 (1): 49-61.
[12] King D W, Farlow R. Role of carbonate speciation on the oxidation of Fe(Ⅱ) by H₂O₂[J]. Mar. Chem., 2000,70(1-3):201-209.
[13] Miller W L, Zepp R G. Photochemical production of dissolved inorganic carbon from terrestrial organic matter: significance to the oceanic organic cycle[J]. Geophys. Res. Lett., 1995,22(3):417-420.
[14] Gao H, Zepp R G. Factors influencing photoreactions of dissolved organic matter in a coastal river of the southeastem United States[J]. Environmental Science & Technology, 1998,32(19):2940-2946.
[15] Moran M A, Sheldon W M, Zepp R G. Carbon loss and optical property changes during long-term photochemical and biological degradtion of estuarine dissolved organic matter[J]. Limnol. Oceangr.,2000,45(6): 1254-1264.
[16] Andrews S S, Caron S, Zafiriou O C. Photochemical oxygen consumption in marine waters:A major sink for colored dissolved organic matter?[J]. Lim nol. Ocea ngr., 2000,45 (2): 267-277.
[17] Scully N M, Cooper W J, Tranvik L J. Photochemical effects on microbial activity in natural waters: the interaction of reactive oxygen species and dissolved organic matter[J]. FEMS Microbiology Ecology, 2003,1559:1-5.
[18] Fukushima M,Tatsumi K, Nagao S. Degradation characteristics of humic acid during photo-fenton processes[J]. Environmental Science & Technology,2001,35(18):3683-3690.
[19] Voelker B M,Sulzberger B. Effects of fulvic acid on Fe(Ⅱ) oxidation by hydrogen peroxide[J]. Environmental Science & Technology, 1996,30(4): 1106-1114.
[20] Chen R, Pignatello J J. Role of quinine intermediates as electron shuttles in fenton and photoassisted fenton oxidations of aromatic compounds[J]. Environmental Science & Technology, 1997,31 (8): 2399-2406.
[21] Schmitt-Kopplin P, Hertkom N, Schulten H, Kettrup A. Structural changes in a dissolved soil humic acid during photochemical degradation process under O₂ and N₂ atmosphere[J]. Environmental Science & Technology, 1998,32(17):2531-2541.
[22] Kulovaara M, Corin N, Bachlund P, Tervo J. Impact of UV254-radiation on aquatic humic substances[J]. Chemosphere, 1996,33 (5): 783 -790.
[23] Sormmaruga R. The role of solar UV radiation in the ecology of alpine lakes[J]. J. Photochem. Photobio. B: Biology,2001,62(1):35-42.
[24] Mill T. Predicting photoreaction rates in surface waters[J]. Chemsphere, 1999,38(6):1379-1390.
[25] 李克斌,刘维屏,邵颖.重金属离子在腐植酸上吸附的研究[J].环境污染与防治,1997,19(1):9-11.Li K B, Liu W P, Shao Y. Study of absorption of heavy metal ions to humic acids[J]. Environmental Pollution and Control, 1997,19 (1): 9-11.
[26] Kacker T, Haupt E, Garms C, Francke W, Steinhart H. Structural characterisation of hurnic acid-bound PAH residues in soil by 13C-CPMAS-NMR-spectroscopy:evidence of covalent bonds[J]. Chemosphere,2002,48(1):117-131.
[27] Pandey A K, Pandey S D, Misra V, Viswanathan P N. Role of free radicals in the binding of organochlorine pesticides and heavy metals with humic acid[J]. The Science of the Total Environment,1999, 231(2- 3):125-13 3.
[28] Avena M, Koopal L, Riemsdijk W. Proton binding to humic acids: electrostatic and intrinsic interaction[J]. Journal of Colloid and Interface Science, 1999,217 (1): 37-48.
[29] Nikkila A, Penttinen S, Kukkonen J S. UV-B-induced acute toxicity of pyrene to the waterflea Daphnia magna in natural freshwaters[J]. Ecotoxocology and Environmental Safety: Environmental Research, Section B, 1999,44 (3):271-299.
[30] Kamiya M, Kameyama K, Ishiwata S. Effects of cyclodextrins on photodegradation of organophosphorus pesticides in humic water[J]. Chemosphere,2001,42(2):251-255.
[31] Bushaw K L, Zepp R G, Ta-r M A, Schulz-Jander D, Bourbonniere R A, Hodson R E, Miller W L, Bronk D A, Moran M A. Photochemical release of biologically available nitrogen from aquatic dissolved organic matter[J]. Nature, 2002,381: 404-407.
[32] Miller W L, Moran M A. Interaction of photochemical and microbial processes in the degradation of refractory dissolved organic matter from a coastal marine environment[J]. Limnol. Oceanogr., 1997,42(6): 1317-1324.
[33] Mcknight D M, Boyer E M, Wsterhoff P K, Doran P T, Kulbe T, Anderson D. Spectrofluorometric characterization of dissolved organic matter for indication of precursor organic material and aromaticity[J]. Limnol. Oceanogr., 2001,46(1):38-48.
[34] Buffam I, Mcglathery K G. Effect of ultraviolet light on dissolved nitrogen transformations in coastal lagoon water[J].Limnol. Oceanogr.,2003,48(2):723-734.
[35] Vahatalo A V, Salkinoja-Salonen M, Taalas P, Salonen K. Spectrum of the quantum yield for photochemical mineralization of dissolved organic carbon in a humic lake[J]. Limnol. Oceanogr.,2000,45(4):664-676.
[36] Osbum C L, Zagareae H E, Morris D P, Hargreaves B R, Cravero W E. Calculation of spectral weighting functions for the solar photobleaching of chromophoric dissolved organic matter in temperate lakes[J]. Limnol. Oceanogr.,2001,46(6): 1455-1467.
[37] Moran M A, Zepp R G. Role of photoreactions in the formation of biologically labile compounds from dissolved organic matter[J]. Limnol. Oceanogr., 1997,42(6): 1307-1316.
[38] Miller W L, Moran M A, Sheldon W M,Zepp R G. Determination of apparent quantum yidd spectra for the formation of biologically labile photoproducts[J]. Limnol. Oceanogr., 2002,47 (2): 343-352.
[39] Kieber R J,Zhou X,Mopper K. Formation of carbonyl compounds from UV-induced photodegradation of humic substances in natural waters: fate of riverine carbon in the sea[J]. Limnol. Oceanogr., 1990,35(6): 1503-1515.
[40] Kieber R J, Mcdaniel J A, Mopper K. Photochemical source of biological substrates in sea water: implication for carbon cycling[J]. Nature, 1989,341:637-639.
[41] Bertilsson S,Allard B. Sequential photochemical and microbial degradation of refractory dissolved organic matter in a humic freshwater system[J]. Arch. Hydrobiol., 1996,48(1):133-141.
[42] Bertilsson S,Tranvik L J. Photochemically produced carboxylic acids as substrates for fresh water bacterioplankton[J]. Limnol. Oceanogr., 1998,43(5):885-895.
[43] Xie H, Zafiriou O C, Wang W, Taylor C D. A simple automated continuous-flow-equilibration method for measuring carbon monoxide in seawater[J]. Environnental Science & Technology,2001,35(7): 1475-1480.
[44] Valentine R L, Zepp R G. Formation of carbon monoxide from the photodegradation of terrestrial dissolved organic carbon in natural waters[J]. Environmental Science & Technology, 1993,27(2):409-412.
[45] Amon R M W, Benner R. Photochemical and microbial consumption of dissolved organic carbon and dissolved oxygen in the Amazon river system[J]. Goechim. Cosmochim. Acta, 1996,60(10):1783-1792.
[46] Salonen K,Vahatalo A. Photochemical mineralization of dissolved organic matter in lake Skjervatjem[J]. Environ.Internat., 1994,20 (3): 507-312.
[47] Tarr M A, Wang W, Bianchi T S, Engelhaupt E. Mechanisms of ammonia and amino acid photoproduction from aquatic humic acid and colloidal matter[J]. Water Research,2001,35(15):3688-3696.
[48] Wang W, Tarr M A, Bianchi T S, Engelhaupt E. Ammonium photoproduction from aquatic humic and colloidal matter[J]. Aqua. Geochem., 2000,6 (2): 275-292.
[49] Xie H, Moore R M, Miller W. Photochemical production of carbon disulphide in seawater[J]. J. Geophys. Res.,1998,103 (C3): 5635-5644.
[50] Xie H,Moore R M. Carbon disulfide in the north Adantic and Pacific oceans[J]. J. Geophys. Res.,1999,104(C3):5393-5402.