摘要
溶解性有机质(dissolved organic matter,DOM)是具有芳香族和脂肪族碳氢化合物结构以及富含多种官能团和元素的复杂有机混合物,在陆生和水生环境中的物理、化学和生物过程中起着至关重要的作用。DOM巨大的复杂性和异质性,以及在环境水体中的浓度较低并与无机盐共存,给分离富集DOM并对其组成和结构进行全面深入分析带来了巨大的挑战。本文围绕DOM分离富集应用最广的固相萃取法(solid phase extraction,SPE),阐述了该方法的原理和步骤,萃取DOM的吸附剂、洗脱和影响因素、以及多SPE柱串联和SPE结合其他方法萃取DOM的进展,以期促进对基于SPE分离富集水体中DOM及其表征的认识和理解。
Dissolved organic matter(DOM)is a complex mixture with aromatic and aliphatic hydrocarbon structures and rich in various functional groups and elements.DOM plays a vital role in physical,chemical and biological processes in terrestrial and aquatic environments.The huge complexity and heterogeneity of DOM,as well as its low concentration in environmental waters and coexistence with inorganic salts,bring great challenges to the isolation and concentration of DOM,as well as the further comprehensive analysis of its compositions and structures.This article focuses on the solid phase extraction(SPE),which is the most widely used method for DOM isolation and concentration,describes the principle and basic processes of this method,the adsorbents for DOM extraction,elution and influencing factors,and summarizes the research progress on the improvement of extraction efficiency by using multiple SPE adsorbents and combining the SPE with other methods for DOM extraction.This article will provide a scientific basis for enhancing the understanding of DOM extraction by SPE and DOM characterization.
作者
郑国航
邢明飞
郝智能
刘景富
ZHENG Guohang;XING Mingfei;HAO Zhineng;LIU Jingfu(Institute of Resource and Environment,Henan Polytechnic University,Jiaozuo,454000,China;State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,China)
出处
《环境化学》
CAS
CSCD
北大核心
2021年第8期2288-2298,共11页
Environmental Chemistry
基金
国家自然科学基金(21806173,21620102008)
山东省重点研发计划(2020CXGC011202)
河南省重点研发与推广专项(科技攻关)项目(212102310061)资助.
关键词
固相萃取法(SPE)
溶解性有机质(DOM)
表征方法
分离富集
solid phase extraction(SPE)
dissolved organic matter(DOM)
characterization method
isolation and concentration
