Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2007, Vol. 23 ›› Issue (8): 233-233.

• 土壤肥料科学 • Previous Articles     Next Articles

Spectroscopies of Soil Humic Substances: A Review

Chen Lan, Tang Xiaohong, Wei Chaofu   

  • Online:2007-08-05 Published:2007-08-05

Abstract: The application of organic matter spectroscopies to characterization researches of soil humic substances have promoted the structural study achieves more development. Compared with the classic chemical analysis methods,the advantages of spectroscopies are minimal sample preparation,as well as being rapid, sensitive, noninvasive, accurate, informative and repeatable. However, people had not made sure of the structure characteres of soil humic substances, due to the complication and lack of advanced research means. For conquering the influence of extraction and pyrolysis on the structures and the limitation of spectroscopies, the main future researches are: (1) the extraction of soil humic substances. Extractant,methylating,hydrolysis,oxidation and reduction have influence on humics characterization; (2) the response to substances. The structure and chemical property of the same soil humic substances can vary with climate,parent material,altitude,vegetational form and soil management; and (3) the development of chemical analysis. Every spectroscopy has certain limitation because of some influencing factors,such as,sample preparation,analysis and operating condition,according,can attect the structure. And the standard spectrogram has not included all soil humic substances.

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