| 电喷雾离子源傅立叶变换离子回旋共振质谱分析IHSS Nordic湖富里酸的分子结构 |
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| 引用本文： | 徐磊,宋凡浩,秦帅,郭飞,刘沙沙.电喷雾离子源傅立叶变换离子回旋共振质谱分析IHSS Nordic湖富里酸的分子结构[J].分析试验室,2019,38(6):637-642. |
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| 作者姓名： | 徐磊 宋凡浩 秦帅 郭飞 刘沙沙 |
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| 作者单位： | 南昌大学资源环境与化工学院,鄱阳湖环境与资源利用教育部重点实验室,南昌330031;中国环境科学研究院,环境基准与风险评估国家重点实验室,北京100012;辽宁大学环境学院,沈阳,110036 |
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| 摘 要： | 基于电喷雾离子源傅立叶变换离子回旋共振质谱(ESI FT-ICR MS)技术,分析了IHSS Nordic湖富里酸参考样品的分子组成。结果表明:Nordic湖富里酸主要是由CHO类物质组成的,含S物质来源于微生物的作用,含N物质来源于微生物作用或陆源输入;木质素类组分是Nordic湖富里酸占比最大的组分,其来源可能是水体植物降解时释放的水溶性木质素;AImod值表明CHON类物质的芳香性结构最强;在CHO类物质中,DBEaverage随着氧原子的增加表现出先减后增的趋势,两部分的相关性指数r^2分别为0. 7456和0. 9888,且随着氧原子的增加,高不饱和度的分子占的比例也越来越大,说明低氧原子数的分子含有较多的羟基和支链结构,高氧原子数的分子有较多的羧基和芳香结构。实验结果拓宽了对富里酸分子结构的认识,有助于进一步了解与污染物质的结合机理。
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| 关 键 词： | Nordic湖富里酸 傅立叶变换离子回旋共振质谱 分子结构 |
Characterization of IHSS Nordic lake fulvic acid by electrospray ionization fourier transform ion cyclotron resonance mass spectrometry |
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| XU Lei,SONG Fan-hao,QIN Shuai,GUO Fei,LIU Sha-sha.Characterization of IHSS Nordic lake fulvic acid by electrospray ionization fourier transform ion cyclotron resonance mass spectrometry[J].Chinese Journal of Analysis Laboratory,2019,38(6):637-642. |
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| Authors: | XU Lei SONG Fan-hao QIN Shuai GUO Fei LIU Sha-sha |
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| Affiliation: | (Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource, Environment and Chemical Engineering, Nanchang University, Nanchang 330031;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences,Beijing 100012;School of Environmental Science, Liaoning University, Shenyang 110036) |
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| Abstract: | XU Lei;SONG Fan-hao;QIN Shuai;GUO Fei;LIU Sha-sha(Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource, Environment and Chemical Engineering, Nanchang University, Nanchang 330031;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences,Beijing 100012;School of Environmental Science, Liaoning University, Shenyang 110036) |
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| Keywords: | Nordic Lake fulvic acid ESI FT-ICR MS Molecular composition |
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