Abstract:Humic substances, i.e., humic acids (HA) and fulvic acids (FA), were extracted from the uncomposted and composted samples, and used as the electron donators and mediators. The results showed that the RC of HA increased from 22.85mmol e-/molC to 26.84mmol e-/molC, whereas the RC of FA decreased from 37.67mmol e-/molC to 33.68mmol e-/molC after composting. The RC of HA and FA determined by FeCit was higher than that measured by Fe(NO3)3. Compared with the native RC, the microbial RC of humic substances decreased, and the decrease level was related to microbial species. Based on the composition analysis by UV-visible spectra and excitation-emission matrix spectra, it can be found that the RC is positively correlated with the content of humic-like substances and quinine, but it showed a negative correlation with the aromatic degree and molecular weight of humic substances.
崔东宇, 何小松, 席北斗, 檀文炳, 高如泰, 袁英, 张慧, 许鹏达. 堆肥腐熟前后胡敏酸与富里酸的还原容量比较[J]. 中国环境科学, 2015, 35(7): 2087-2094.
CUI Dong-Yu, HE Xiao-Song, XI Bei-Dou, TAN Wen-Bing, GAO Ru-Tai, YUAN Ying, ZHANG Hui, XU Peng-Da. The comparison of reduction capacity between humic acid and fulvic acid extracted from the compost. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(7): 2087-2094.