分离富集技术在紫外-可见分光光度法测定金属元素中的应用  

Application of Separation and Pre-concentration Techniques in the Determination of Metal Elements by UV-vis Spectrophotometry

作　　者：温晓东 杨盛春 邓庆文 胡侃 Wen Xiaodong;Yang Shengchun;Deng Qingwen;Hu Kan(College of Pharmacy and Chemistry,Dali University,Dali,Yunnan 671000,China)

机构地区：[1]大理大学药学与化学学院

出　　处：《大理大学学报》2019年第12期36-43,共8页Journal of Dali University

基　　金：国家自然科学基金资助项目（21964001）;大理大学创新团队建设计划资助项目（ZKLX2019216）

摘　　要：随着科学技术的发展,现代分析化学在进行地质、生物、环境等样品的分析时,经常要求检测mg/L、μg/L乃至ng/L级的痕量或超痕量组分。由于分析仪器的灵敏度及样品的基体干扰,许多分析仪器在测定这些复杂基体试样中的痕量或超痕量组分时往往会遇到困难,甚至难以实现准确测定。因此分离富集仍然是分析方法中不可缺少的重要环节,该类技术可以提高分析方法的灵敏度和选择性。综述近年来几种分离富集技术与分子光谱分析中紫外-可见分光光度法联用测定痕量、超痕量金属元素的研究工作,包括液相微萃取分离富集技术以及固相微萃取分离富集技术在紫外-可见分光光度法中的应用。With the development of science and technology, analyses of geological, biological, environmental samples often requires the determination of mg/L, μg/L or ng/L levels of trace and ultra-trace elements. Due to instrument sensitivity and sample matrix interference, many analytical instruments often encounter difficulties in determining trace or ultra-trace components in these complex matrix samples, and it is even impossible to achieve accurate measurements. So, separation and pre-concentration techniques are very important for analytical chemistry and are often used to improve the sensitivity and selectivity of instruments and analytical methods.The purpose of this paper is to review the new applications of separation and pre-concentration techniques in UV-vis spectrophotometric determination of metal elements, including the applications of liquid phase micro-extraction and solid phase microextraction.

关 键 词：分离富集技术 液相微萃取 固相微萃取 紫外-可见分光光度法 应用 

分 类 号：O657.3[理学—分析化学]