School of Environment, Beijing Normal University, Beijing, China.
Bioresour Technol. 2011 Feb;102(3):2322-7. doi: 10.1016/j.biortech.2010.10.085. Epub 2010 Oct 25.
For the purpose of evaluating the stability of municipal solid waste (MSW) excavated from a landfill, dissolved organic matter was extracted and characterized by physicochemical and spectroscopic methods. Results showed that dissolved organic carbon concentration, ratio of dissolved organic carbon to dissolved organic nitrogen, and specific ultraviolet absorbance at 254 nm were in the range of 0.383-3.502 g kg(-1), 0.388-3.693 and 2.700-4.629 L mg(-1) m(-1), respectively, indicating the stability of MSW. Results obtained from Fourier transform infrared spectra have demonstrated that the stability of excavated MSW was characterized by disappearance of some easily biodegradable compounds; and the 1635/1406 ratio varied from 0.979 to 1.840 and was higher than that of the matured compost. The excitation-emission matrix spectra have shown that the principal components in excavated MSW comprised humic substances and the MSW was stable by the presence of a peak with wavelength pair of ∼280/420 nm.
为了评估从垃圾填埋场挖掘出的城市固体废物 (MSW) 的稳定性，采用物理化学和光谱方法提取并表征了溶解有机物。结果表明，溶解有机碳浓度、溶解有机碳与溶解有机氮的比值以及在 254nm 处的特定紫外吸光度分别在 0.383-3.502gkg-1、0.388-3.693 和 2.700-4.629Lmg-1m-1 的范围内，表明 MSW 的稳定性。傅里叶变换红外光谱的结果表明，挖掘出的 MSW 的稳定性特征是一些易生物降解的化合物消失了；1635/1406 的比值从 0.979 到 1.840 变化，高于成熟堆肥的比值。激发发射矩阵光谱表明，挖掘出的 MSW 的主要成分包括腐殖质，并且存在波长对为~280/420nm 的峰表明 MSW 是稳定的。
