样品前处理主要是实现分析物分离、纯化、富集的目的，减少其它物质或杂质等的干扰，便于后续分析。开发快速、简便、准确、选择性高和环境友好的样品前处理材料与技术已成为现代分析化学领域亟待解决的关键问题。本项目拟将具有良好吸附能力的碳纳米材料与磁性载体技术结合，开展高效吸附与快速分离一体化固相吸附萃取创新技术及其选择性吸附机理研究。首先，制备6种以上超顺磁性载体碳纳米材料，对其形态、结构和性能进行详细表征；其次，建立固相吸附萃取分离分析新技术，选择不同类型的分析物，并以具有专一吸附能力的吸附剂为阳性对照，对所制备复合材料的吸附选择性和专属性进行评价，从而阐述其吸附选择性机理；有针对性地对复合材料的吸附动力学和吸附等温线进行研究，剖析吸附过程的特征，并描述分析物与吸附剂之间的相互作用关系；最终，为所制备的超顺磁性载体碳纳米材料制定具有导向性的分析物选择准则，实现其在分析领域的目标性固相萃取广泛应用。

Sample pretreatment is mainly to achieve the purpose of separation, purification and enrichment for target analytes, as well as reduce the interference of impurities so as to assist the sample analysis. The key point in current analytical chemistry field is to develop sample pretreatment method and materials with the advantages of rapidity, simplicity, accuracy, high selectivity and environmental benignity. The project is schemed to combine the carbon nanomaterials possessing good adsorptivity with magnetic carrier technology having the characteristic of rapid separation, then further to study the innovative solid phase extraction technology and selective adsorption mechanism. First, more than six kinds of superparamagnetic carbon nanomaterials are prepared, and then elaborately characterized in shape, structure and performance. Second, the novel technology based on solid phase adsorptive extraction in separation and analytical field is established, furthermore, the selectivity and specificity of the composites are evaluated by selecting different types of compounds as model analytes and choosing adsorptive materials with special adsorptivity as reference materials. Third, the adsorption dynamics and adsorption isotherm of the composites are studied to explain the characteristics in adsorption process, as well as to describe the interactions between analytes and adsorbents. Finally, the guidance of carbon nanomateials with superparamagnetic carrier for analytes are found to realize the directional application for target analytes in analytical field.