摘要
采用XAD-8大孔吸附树脂对水体和底泥中的有机物进行组分分离,并通过傅里叶变换红外光谱(FTIR)、紫外-可见光谱(UV-Vis)和三维荧光光谱(3DEEMs)对自然水体和底泥中的疏水酸(腐殖酸、富里酸)、疏水碱、疏水中性物质和亲水物质进行表征和对比.结果表明,水体中有机物含量:亲水物质>富里酸>腐殖酸>疏水碱>疏水中性物质,底泥中有机物的含量为:腐殖酸>富里酸>亲水物质>疏水碱>疏水中性物质.根据红外、紫外、三维荧光光谱可知底泥中有机物的芳香程度、不饱和程度及分子量大小略高于水体有机物.根据荧光指数(FI)和自生源指标(BIX)可知,底泥和水体的腐殖酸和富里酸主要来源于陆生动植物和土壤有机质,而其余物质主要源于细菌和藻类活动.
Humic acid （ HA）, fulvic acid （FA）, hydrophobie base （ HOB ）, hydmphobic neutral （HON） and hydrophilie substance （HI） in water and sediment were separated with XAD-8 macroporous adsorption resin. Fourier transform infrared spectroscopy （ FTIR）, ultraviolet visible spectroscopy （ UV- Vis） and three-dimensional fluoreseenee spectra（3DEEMs） were employed to characterize and compare the functional groups of those organic matter. The results show that the content of organic matter in the natural water： HI 〉 FA 〉 HA 〉HOB 〉 HON, while the content of organic matter in the sediment： HA〉 FA〉 HI〉 HOB〉 HON. Based on the results of FT-IR, UV and 3DEEMs, it is demonstrated that the ammaticity, unsaturation and molecular weight of organic matter in sediment were slightly higher than those of natural water. The fluorescence index （FI） and autochthonous index （BIX） of 3DEEMs indieated that HA and FA of sediment and water were mainly derived from terrestrial animals ＆plants and soil organie matter, and the rest three speeies were mainly derived from bacteria and algae.
作者
李梦琦
杨春风
刘立超
何彦
付璐婧
胡承志
李静
LI Mengqi YANG Chunfeng LIU Lichao HE Yan FU Lujing HU Chengzhi LI Jing(School of Civil and Transportation, Hebei University of Technology,Tianjin 300401 Civil Engineering Technology Research Center of Hebei Province,Tianjin 300401 China Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences Beijing 100085)
出处
《环境科学学报》
CAS
CSCD
北大核心
2017年第10期3823-3829,共7页
Acta Scientiae Circumstantiae
基金
河北省高等学校科学技术研究项目(No.QN2014081)~~
关键词
有机物
XAD-8大孔吸附树脂
紫外-可见光谱
红外光谱
三维荧光光谱
organic matter
XAD-8 macroporous adsorption resin
ultraviolet visible spectrum
fourier transform infrared spectroscopy
three-dimensional fluorescence spectrum
