Study of development of selective determination and separation method for trace element

本项目研究了环境、生物样品和新材料中微量元素的形态和表征的高灵敏度、高选择性的新测定方法。环境和生物样品中微量元素物种形成方法的发展。利用十二烷基硫酸钠（SDS）的作用，用阳极溶出伏安法准确地评价了腐植酸的络合能力。研究了聚苯乙烯薄膜或PCTFE树脂中微量元素的预富集方法，并将其应用于海水和河水的分析。制备了一种具有伪生物成分的合成多元素标准物质，并证明了其作为标准物质的实用性。基于新观点的高选择性分离测定方法。在高效液相色谱和离子相互作用色谱的流动相体系中引入加合物形成和掩蔽效应，实现了金属和稀土金属离子的良好分离。研究了二氧化钛微粒作为高效液相色谱（HPLC）基质的可能性。具有新功能的分析试剂的开发。合成了一种新型荧光试剂，该试剂在线性聚醚的两端都有两个蒽基团。与金属离子络合时，试剂的荧光光谱由单体变为二聚体。从β -二酮的萃取行为中，发现螯合环刚性是控制离子大小识别的参数。合成了一种新型阳离子三苯甲烷染料，并对其性能进行了研究，以评价其作为离子结合剂的性能。在线快速、灵敏的测定分离系统。建立了氧化偶联催化流动注射法、离子交换相吸收法和原位固相反应金属炉汽化ICP法测定环境样品中微量元素的方法。少

The new determination methods having high sensitivity and selectivity were studied in this project for the speciation and charactarization of trace elements in environmental and biological samples and new materials.1. The development of speciation methods for trace elements in ebvironmental and biological samples. The complexing ability of humic acid was evaluated exactly by anodic stripping voltammetry using the effect of sodium dodecyl sulfate(SDS). The pre-concentration methods of trace elements in polystylene film or PCTFE resin were developed and applied to analyzes of seawater and river water. A synthetic multi-element reference materials with a pseudo-biological composition was prepared and the usefulness as a atandard material was demonatrated.2. The high selective separation and determination methods based on new viewpoint. The excellent separation of metal and rare earth metal ions was achieved by introducing adduct formation and masking effect to mobile phase system of HPLC … More and ion-interaction chromatography. The possibility of titania microparticles as a promising matrix for HPLC was investigated.3. The development of analytical reagent having new function. A new fluorescent reagent which has two anthracene moieties at both terminals on linear polyether was synthesized. The fluorescent spectrum of the reagent changed from that of monomer to dimer at the complexation with metal ions. From extraction behavior of beta-diketone, the chelate ring rigidity was found to be a parameter governing the ion size recognition. Novel cationic triphenylmethane dyes were synthesized and their characteristics were investigated to evaluate them as an ion association reagent.4. On-line system for the rapid and sensitive determination and separation. Flow injection methods by catalysis of oxidative coupling reaction, ion-exchange phase absorptiometry and ICP method using metal furnace vaporization via in situ solid phase reaction were developed for the determination of trace elements in environmental samples. Less