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CHARACTERIZATION OF HUMIC AND FULVIC-ACIDS EXTRACTED WITH NAOH AND NAOH-NA-PYROPHOSPHATE MIXTURE FROM SOILS OF ARID AND SUBHUMID REGIONS .2. SPECTROSCOPIC PROPERTIES 期刊论文
发表期刊: ARID SOIL RESEARCH AND REHABILITATION. 出版年: 1992, 卷号: 6, 期号: 3, 页码: 187-200
作者:  TOMAR, NK;  YADAV, RP;  RELAN, PS
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HUMIC ACIDS  FULVIC ACIDS  E4/E6 RATIOS  EXTINCTION COEFFICIENTS  ULTRAVIOLET VISIBLE SPECTRA  IR SPECTRA  X-RAY DIFFRACTION