Space-time characteristics of chromophoric dissolved organic matter from typical polluted city river
YU Min-da1,2,3, HE Xiao-song1,3, TAN Wen-bing1,3, XI Bei-dou1,3, ZHANG Hui1,3, MA Li-na1,3, ZHANG Yuan1,3, DANG Qiu-ling1,3, GAO Ru-tai1,3
1. State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Beijing 100012, China;
2. School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China;
3. Innovation Base of Ground Water and Environmental System Section Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
Typical urban polluted city river-Hebei Xiao River water CDOM of the source, spatial and temporal distribution characteristics were studied by fluorescence excitation-emission matrix spectra (EEM), ultraviolet-visible (UV-vis) combine with parallel analysis (PARAFAC), principal component analysis (PCA), and the correlation of CDOM and water chemical indicators was investigated as well. The results showed that Xiao River water CDOM was mainly microbial-derived for rencent human emission of water. The concentration of CDOM was at higher level in fall (August) and winter (November), but low in the spring (February) and summer (May). Variation characteristics of space redered on first increase and then decreases from upstream to downstream. Four florescence components were identified, and component 1 (fulvic acid), component 2 (humic) and component 3 (humic acid) originated from humic-like substance, while component 4ascribed to protein-like materials. The components had difference source and distribution was variable and changed with time. In addition to summer the protein-like and humic-like components had similar sources, especially with the humic acid components. The concentration of protein-like was higher in spring and winter, but lower in the summer and autumn. In the Xiao River fluorescent substance had greatly contribution of ammonia and nitrite, and the humic-like had an important influence of chemical oxygen demand. The results demonstrated that, EEM and UV-vis spectra coupled with PARAFAC, PCA and cluster analysis can be used to analyze the seasonal variation of the CDOM and identify the spatial distribution of pollution in the Xiao River.
Schmidt M W I, Torn M S, Abiven S, et al. Persistence of soil organic matter as an ecosystem property[J]. Nature, 2011, 478(7367):49-56.
[2]
Huguet A, Vacher L, Saubusse S, et al. New insights into the size distribution of fluorescent dissolved organic matter in estuarine waters[J]. Organic Geochemistry, 2010,41(6):595-610.
[3]
Chen M, Price R M, Yamashita Y, et al. Comparative study of dissolved organic matter from groundwater and surface water in the Florida coastal Everglades using multi-dimensional spectrofluorometry combined with multivariate statistics[J]. Applied Geochemistry, 2010,25(6):872-880.
Wang L, Wu F, Zhang R, et al. Characterization of dissolved organic matter fractions from Lake Hongfeng, Southwestern China Plateau[J]. Journal of Environmental Sciences, 2009,21(5):581-588.
[6]
Gree S A, Blough N V. Optical absorption and fluorescence properties of chromophoric dissolved organic matter in natural waters[J]. Limnology and Oceanography, 1994,39(8):1903-1916.
Andrew A A, Vecchio R D, Subramaniam A, et al. Chromophoric dissolved organic matter (CDOM) in the Equatorial Atlantic Ocean:Optiacl properties and their relation to CDOM structure and source[J]. Marine Chemistry, 2013,148:33-43.
[9]
Carder K L, Steward R G, Harvey G R, et al. Marine humic and fulvic acids:their effects on remote sensing of ocean chlorophyll[J]. Limmology and Oceanography, 1989,34(1):68-81.
Kowalczuk P, Durako M J, Young H, et al. Charaterization of dissolved organic matter fluorescence in the South Atlantic Bight with use of PARAFAC model:Interannual Variability[J]. Marine Chemistry, 2009,113(3):182-196.
Matsuoka A, Hooker S B, Bricaud A, et al. Estimating absorption coefficients of colored dissolved organic matter (CDOM) using a semi-analytical algorithm for southern Beaufort Sea waters:application to derving concentration of dissolved organic carbon from space[J]. Biogeoscience, 2013,10(2):917-927.
[15]
Du C F, Shang S L, Dong Q, et al. Characteristics of chromophoric dissolved organic matter in the nearshore waters of the western Taiwan Strait[J]. Estuarine, Coastal and Shelf Science, 2010,88(3):350-356.
[16]
Granskog M A, Macdonald R W, Mundy C J, et al. Distribution, characteristics and potential impacts of chromophoric dissolved organic matter (CDOM) in Hudson Strait and Hudson Bay, Canada[J]. Continental Shelf Research, 2007,27(15):2032-2050.
[17]
He M C, Shi Y H, Lin C Y. Charaterization of humic acids extracted from the sediments of the various rivers and lakes in China[J]. Journal of Environmental Science, 2008,20(11):1294-1299.
Stedmon C A, Bro R. Charaterizing dissolved organic matter fluorescence with parallel factor analysis:a tutorial[J]. Limnology and Oceanography:Methods, 2008,6:572-579.
Helms J R, Stubbins A, Ritchie J D, et al. Absorption spectral slopes and slope ratios as indicators of molecular weight, source, and photobleaching of chromophoric dissolved organic matter[J]. Limnology and Oceanography, 2008,53(3):955-969.
[23]
Chen M, Maie N, Parish K, et al. Spatial and temporal variability of dissolved organic matter quantity and composition in a logographic subtropical coastal wetland[J]. Biogeochemistry, 2013,115(1-3):167-183.
[24]
Salve P R, Lohkare H, Gobre T, et al. Charaterization of chromophoric dissolved organic matter (CDOM) in rainwater using flurescence spectrophotometry[J]. Bullettin of Environmental Contamination and Toxicology, 2012,88(2):215-218.
[25]
Bahram M, Bro R, Stedmon C, et al. Handling of Rayleigh and Raman scatter for PARAFAC modeling of fluorescence data using interpolation[J]. Journal of Chemomtrics, 2006,20(3/4):99-105.
Carder K L, Steward R G, Harvey G R, et al. Marine humic and fulvic acid:Their effects on remote sensing of oceam chorophyll[J]. Limnology and Oceanography, 1989,34(1):68-81.
[31]
Helms J R, Stubbins A, Ritchie J D, et al. Absorption spectral slopes and slope ratio as indicators of molecular weight, source, and photobleaching of chromophoric dissolved organic matter[J]. Limnology and Oceanography, 2008,53(3):955-969.
[32]
Blough N V, Green S A. Spectroscopic characterization and remote sensing of nonliving organic matter[A]. In:The role of nonliving organic matter in the Earth's carbon cycle[M]. Chichester:John Wiley and Sons, 1995:23-45.
[33]
Coble P G, Delcastillo C E, Avril B. Distribution and optical properties of CDOM in the Arabian Sea during the 1995 Southwest Monsoon[J]. Deep Sea Research:Part II. Topical Studies in Oceanography, 1998,45(10/11):2195-2223.
Coble P G. Characterization of marine and terrestrial DOM in seawater using excitation-emission matrix spectroscopy[J]. Marine Chemistry, 1996,51(4):325-346.
[36]
Leenheer J A, Croue J. Peer reviewed:characterizing aquatic dissolved organic matter[J]. Environment Science & Technology, 2003,37(1):18A-26A.
Yamashita Y, Jaffe R. Characterizing the interactions between trace metals and dissolved organic matter using excitation-emission matrix and parallel factor analysis[J]. Environmental Science and Technology, 2008,42(19):7374-7379.
