Abstract:In order to truly understand the character and structure of fulvic acid, which contains many substances, the authors isolated fulvic acid detailedly according to its definite character and its characteristic of similar structure. Fulvic acid with H+ can be adsorbed by the XAD-8 column balanced by the usual buffer(pH 2). The hydrophilic fraction in fulvic acid can be divided into three groups using the buffer with various pH (4.8, 7.0 and 11.0), while the hydrophobic fraction can be classified into two groups by the distilled water and alcohol separately. For FTIR(Fourier transform infrared) and NMR(nuclear magnetic resonance) spectroscopy analysis, three paddy soils were used. It may be concluded that the content of oxygen and carboxyl group dissolved at low pH is more than that dissolved in the water and alcohol, but the content of aliphatic fraction is less and has short side chain.
刘本定,李夏,代静玉*. XAD树脂分组水稻土富里酸组分的脂肪族特性[J]. 光谱学与光谱分析, 2007, 27(10): 2032-2037.
LIU Ben-ding, LI Xia, DAI Jing-yu*. Aliphatic Characteristics of the Fractions Isolated from the Soil Fulvic Acid Using XAD-8 Column. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(10): 2032-2037.
[1] Kang K H, Shin H S, Park H. Water Research, 2002, 36: 4023. [2] Klavins M, Apsite E. Environment International, 1997, 23(6): 783. [3] Fooken U, Libezeit G. Marine Geology, 2000, 164: 173. [4] Alborzfar M, Jonsson G, Gron C. Water Resource, 1998, 32: 2983. [5] MacCarthy P, Peterson M J, Malcolm R L, et al. Anal. Chem., 1979, 51: 2041. [6] Yonebayashi K, Hattori T. Geoderma, 1990, 47: 327. [7] ZHOU Jiang-min, DAI Jing-yu, PAN Gen-xing, et al(周江敏,代静玉, 潘根兴,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2004,24(9):1060. [8] Van Krevelen D W. Fuel, 1950, 29: 269. [9] Kuwatsuka S, Tsutsuki K, Kumada K. Soil Sci. Plant Nutr., 1978, 24: 337. [10] Yonebayashi K, Hattori T. Soil Sci. Plant Nutr., 1988, 34: 571. [11] Morrison R T, Boyd R N. Organic Chemistry. Part 17, Neston, Massachusetts: Allyn and Bacon Inc: 1983. [12] Kaisert K, Zech W. Science of Soils, 1997, 2: 71. [13] GU Zhi-mang, WANG Xiao-rong, et al(顾志忙, 王晓蓉, 等). Chinese Journal of Analytical Chemistry(分析化学), 2000, 28(3): 314. [14] WU Jing-gui,XIShi-quan, JIANG Yan(吴景贵,席时权,姜 岩).Spectroscopy and Spectral Analysis(光谱学与光谱分析),1998,18(1):52. [15] Wilson M A, Collin P J, Tate K R. Jounal of Soil Science, 1983, 34: 297. [16] DOU Sen, HUA Shi-ying(窦 森, 华士英). Acta Pedologica Sinica(土壤学报),1997, 34(3): 225.