Effect of Straw Incorporation on Three-Dimensional Fluorescence Spectrum of Dissolved Organic Matter in Arid Loess
FAN Chun-hui1, ZHANG Ying-chao2, HE Lei1, WANG Jia-hong1
1. College of Resource & Environment, Shaanxi University of Science & Technology, Xi’an 710021, China 2. College of Environment, Tsinghua University, Beijing 100084, China
Abstract：The three-dimensional fluorescence spectrum was used to investigate the fluorescence characterization of dissolved organic matter (DOM) before and after straw incorporation in arid loess, and the variation of humification degree and Pb(Ⅱ) speciation were illustrated. The results showed that the fluorescence peaks of loess appears at the regions of λex/em=240～270/280～340 and λex/em=325/450, referred as UV fulvic-like fluorescence, and visible fulvic-like and humic-like fluorescence, respectively. After straw incorporation for 60 days, the intensity of UV fulvic-like fluorescence peaks increases, and novel humic-like fluorescence peaks appears around the region of λex/em=250/440 and λex/em=320～350/350～400. The longer time of straw incorporation would accelerate the humification degree of loess and decrease the bioactivity of Pb(Ⅱ). The three-dimensional fluorescence spectrum is appropriate for characterization identification of DOM in arid loess before and after straw incorporation.
范春辉1，张颖超2，贺 磊1，王家宏1 . 秸秆还田对旱田黄土可溶性有机质三维荧光光谱的影响 [J]. 光谱学与光谱分析, 2013, 33(07): 1820-1823.
FAN Chun-hui1, ZHANG Ying-chao2, HE Lei1, WANG Jia-hong1 . Effect of Straw Incorporation on Three-Dimensional Fluorescence Spectrum of Dissolved Organic Matter in Arid Loess. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(07): 1820-1823.
[1] Norse D. Pedosphere, 2005, 15(4): 499. [2] Magee B R, Lion L W, Lemley A T. Environmental Science & Technology, 2001, 25(2): 323. [3] Sanchiz C, Garcia-Carrascosa A M, Pastor A. Aquatic Botany, 2001, 69(1): 63. [4] Zhang H M, Zhou Q H, Xue M G, et al. Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy, 2011, 78(3): 1018. [5] Schniter M. “Organic Matter Extraction. Characterization”. Methods of Soil Analysis. Part 2, 2nd ed. ASA, Madison: WI Press, 1982. 581. [6] National Standard of the People’s Republic of China(中华人民共和国国家标准), GB/T17141—1997. Soil Quality Determination of Lead, Cadmium-Graphite Furnace Atomic Absorption Spectrophotometry(土壤质量铅、镉的测定—石墨炉原子吸收分光光度法). [7] Tessier A, Campbell P G C, Blsson M. Analytical Chemistry, 1979, 51(7): 844. [8] JUAN Ying-hua, WU Zhi-jie, CHEN Li-jun, et al(隽英华, 武志杰, 陈利军, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2010, 30(7): 1918. [9] FU Ping-qing, LIU Cong-qiang, YIN Zuo-ying, et al(傅平青, 刘丛强, 尹祚莹, 等). Geochimica(地球化学), 2004, 33(3): 301. [10] Kalbitz K, Solinger S, Park J H, et al. Soil Science, 2000, 165(4): 277. [11] Baker A, Curry M. Water Research, 2004, 38(10): 2605. [12] Cobel P G, Green S A, Blough N V, et al. Nature, 1990, 348(6300): 432. [13] Patel-Sorrentino N, Mounier S, Benaim J Y. Water Research, 2002, 36(10): 2571. [14] Riffaldi R, Levi-Minzi R, Saviozzi A, et al. Agriculture, Ecosystem & Environment, 1998, 69(2): 113. [15] ZHOU Jiang-min, CHEN Hua-lin, TANG Dong-min, et al (周江敏, 陈华林, 唐东民, 等). Plant Nutrition & Fertilizer Science (植物营养与肥料学报), 2008, 14(4): 678. [16] Matthews B J H, Jones A C, Theodorou N K, et al. Marine Chemistry, 1996, 55(3-4): 317. [17] Zsolnay A, Gorlitz H. Soil Biology & Biochemistry, 1994, 26(9): 1257.
