摘要
基于国内外相关文献研究,文章回溯了沉积物重金属测定分析技术历史进展,将各种采样技术做了简要的概述,分析了各项技术的优缺点,提出薄膜扩散梯度技术(DGT)更适合沉积物重金属生物有效态的原位监测。文章还阐述了DGT主要分析方法供相关研究人员参考。对未来DGT技术的发展和分析方法的创新提出展望。DGT基于吸附动力学原理能较好地模拟生物的吸收过程,同时利用DGT技术对沉积物-水界面(SWI)进行二维高分辨率研究有助于进一步探究重金属迁移转化的影响机制,为沉积物重金属污染防治及水环境保护提供技术支持。
Based on the research of relevant literature at home and abroad,this paper traces the historical progress on determination and analysis technology of heavy metals in sediment,briefly summarizes various sampling technologies,analyzes the advantages and disadvantages of each technology.It is pointed out that the diffusive gradients in thin-films technique(DGT)is more suitable for in-situ measurement of bioavailable heavy metals in sediments.The main analysis methods of DGT are also described in this paper for researchers on the related field.The development of DGT technology and the innovation of analysis methods in the future are prospected.DGT can simulate the biosorption process based on the principle of adsorption kinetics.And the twodimensional high-resolution study of the sediment-water interface(SWI)using DGT is helpful to further explore the mechanism of heavy metal transport and transformation,provides the technical support for the prevention and control of heavy metal pollution in sediments and water environment protection.
作者
张宏华
宋志鑫
宋刚福
张莉
唐文忠
周娃妮
马轩
王汉卿
ZHANG Honghua;SONG Zhixin;SONG Gangfu;ZHANG Li;TANG Wenzhong;ZHOU Wani;MA Xuan;WANG Hanqing(School of Environmental and Municipal Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Henan Meteorological Survey Data Center,Zhengzhou 450003,China;Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;Zhongzhou Water Holding Co.,I.td.,Zhengzhou 450000,China)
出处
《环境保护科学》
CAS
2023年第1期26-31,共6页
Environmental Protection Science
基金
国家自然科学基金资助项目(42007356)
河南省科技攻关项目(222102320023)。
