摘要： 核磁共振(nuclear magnetic resonance)技术具有快速、精确、分辨率高等优点，并已不断成熟成为土壤分析、物质结构鉴定、食品分析和医学成像等领域重要的研究分析手段。本文通过介绍利用NMR技术研究液相环境中高分子聚合物在颗粒表面(主要为SiO2颗粒)的吸附、解吸及扩散等行为和利用NMR技术研究受污染土壤中水的摄取过程及土壤润湿性两大方面，综述了NMR技术在物质表面性质表征领域的重要应用，展现了NMR技术在高分子材料和环境领域中独特的重要作用。重点介绍基于NMR技术的Acorn比表面分析仪能够直接测定液相环境中物质的弛豫时间，反映物质的表面性质和结构特征，为解释污染物环境行为提供数据支持从而在环境领域发挥重要作用，展现出Acorn比表面分析仪相比于传统BET法在测量环境和测量时间等方面的优越性，尤其是Acorn比表面分析仪可以反映液相环境中物质的表面性质和结构特征的重要特性，解决了传统BET法无法直接获得液相环境中物质的比表面积信息的难题，是液相环境中NMR技术在物质表面性质表征领域的新突破。对Acorn比表面分析仪在制药、化妆品材料和电子产品等方面的应用进行了分析，并在土壤有机质、药物和天然产物检测等方面对NMR技术的应用进行了展望。
关键词：核磁共振;表面性质;弛豫时间;液相比表面积
Abstract：Nuclear magnetic resonance (NMR) technology has been developed continuely because of its rapid, accurate and high resolution advantages, The technology has become an important method to analyze the soil properties, and to identify the structure of matters, food analysis, medical imaging fields. This study summarized two aspects of the important applications of NMR in the characterization of the surface properties of materials. First, the use of NMR techniques for the adsorption, desorption and diffusion behaviors of polymer on solid particles (mainly SiO2 particles). Sencond, to investigate the wettability and water uptake progress of contaminated soils using NMR techniques. This study summarized the important applications of NMR techniques in the characterization of surface properties. It also showed the unique application in the field of polymer materials and environment. This study introduced the measured method for the relaxation time of substance using acorn surface area analyzer in the liquid environment. It reflect the surface properties and structural features of substance. It also provided data support for the explanation of environmental behaviors of contaminants and thus, it played an important role in the environmental field. Compared to the conventional BET method, acorn surface area analyzer showed the advantages in terms of conditions and time measurement. Especially, traditional BET method cannot get the information of the specific surface area of substances in the liquid directly, but acorn surface area analyzer solved the difficult problem. It is a new breakthrough in the field of characterization of the surface properties of materials by NMR in the liquid. We analyzed the application of acorn surface area analyzer in pharmaceuticals, cosmetic materials, electronic products because acorn surface area analyzer could reflects the important characteristics of the surface properties and structural features of substance. And we provide the prospective of the applications of NMR techniques in organic matter of soils, drug and natural products detecting.
Key words：Nuclear magnetic resonance;Surface properties;Relaxation time;Specific surface area in the liquid
梁 妮，张 迪*，魏超贤 . 核磁共振技术在物质表面性质表征领域的新应用 [J]. 光谱学与光谱分析, 2015, 35(02): 497-501.
LIANG Ni, ZHANG Di*, WEI Chao-xian . The New Applications of NMR Technology in the Field of Characterization of Surface Properties of the Material. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(02): 497-501.
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