流通式-时间分辨分析系统（FT-TRA）是一项新发展的分析技术，可以实现地质和环境样品的程序化淋滤和不同速度溶解。与ICP-MS联用可进行在线实时的高分辨率元素分析，精确采集不同相态成分信息，且淋滤过程具有高效和高度重现性，因此它具有传统分步批次处理法无可比拟的优势。该系统在有孔虫等生物样品的清洗和分析、矿物溶解速率测定和沉积物/土壤样品相态分析中有巨大潜力。然而已有FT-TRA装置功能单一，无法满足实际应用中的多种分析需求。本研究拟改进以往类似装置的硬件配置，自主设计新型样品池，并集成在线分析和离线收集淋滤液两种功能，建立一套适合多种样品分析、样品池可选的高效FT-TRA系统；通过有孔虫淋洗、矿物溶解及自然沉积物样品相态淋滤等实验，验证系统的稳定性和数据可靠性。所建立FT-TRA系统将促进对地球化学基本过程和机制的理解，为古海洋古环境指标建立和验证提供借鉴。

The basic concept of Flow through-time resolved analysis system (FT-TRA) is to gradually run a reagent (the eluent) through a fully enclosed cell loaded with the sample to be dissolved and analyze the eluate continuously. FT-TRA consists of a flow-through dissolution module linked to an ICPMS, which is a detector capable of time-resolved analysis. As an alternative approach to batch dissolution, FT-TRA is more powerful and efficient for measuring the elemental compositions in different chemical phases of microfossils, soils and sediments, and for constraining the mineral reaction rate. Compared to the traditional batch method, the FT-TRA is less manual labor and thus less prone to be affected by user experience; It prevents re-crystallization of minerals during dissolution, and most importantly provides a much richer context to interpret the data accurately. The existing FT-TRA has complicated steps required to assemble a flow-through module that is not readily available and it is not capable for various samples. This project will develop an accessible, multi-faceted FT-TRA module which allows a wide variety of applications can be developed, by customizing key system parameters such as sample cell types. It also offers the choice between on-line analysis or fraction collection for off-line analysis. Moreover, using automated equipment as proposed here, more control of the physical conditions of dissolution and better reproducibility can be achieved. To check the reliability and accuracy of new FT-TRA, we will carry out systematic analyses, including cleaning and dissolution of marine microfossils, mineral dissolution rate and leachate of sedimentary samples, and the results will be evaluated and compared with the batch dissolution method. This work will provide us a novel analytic method to better understand the processes and kinetics of geochemistry and paleo-proxy of paleoceanography.