气相色谱微波诱导等离子体原子发射光谱检测器对C,P,Si,Sn,B和I元素的响应特性的研究  

Studies on Response Characteristics of the Elements C, P, Si, Sn, B and I Using Microwave Induced Plasma Atomic Emission Spectrometric Detector for Gas Chromatography

作　　者：师宇华[1] 郑健[1] 杨任飞[1] 于爱民[1] 

机构地区：[1]吉林大学化学学院分析化学系,吉林长春130023

出　　处：《色谱》2003年第6期621-624,共4页Chinese Journal of Chromatography

基　　金：国家自然科学基金资助项目(批准号:29735160);吉林大学青年基金资助项目.

摘　　要：以微波诱导等离子体作为气相色谱的原子发射光谱检测器,在优化实验参数的基础上,考察了该检测器对有机化合物中的C,P,Si,Sn,B和I元素的响应特性(检出限、线性范围和精密度)。结果表明:该检测器在仪器成本、功率消耗和气体消耗等方面明显优于气相色谱 电感耦合等离子体 原子发射光谱检测器(GC ICP AED)。对各元素测定的检出限优于GC ICP AED约1个数量级,尤其适合于B和I元素的测定。通过对不同种类有机化合物中碳元素相对响应值的测定,初步探讨了该等离子体光源对有机化合物的碎片原子化程度及其规律以及相应的响应机理。结果表明:以氩气为工作气体的surfatron器件作为等离子体光源时,有机化合物中碳元素的响应与化合物的结构有一定的关系。A microwave induced plasma atomic emission spectrometric detector for gas chromatography (GCMIPAED) was studied. Based on the optimization of the operating parameters, the response characteristics (the detection limit, the linear dynamic range and the relative standard deviation) of the detector for the determination of the elements C, P, Si, Sn, B and I in different organic compounds were investigated. The instrumental cost, the microwave forward power and the gas flowrate are lower than those of inductively coupled plasma atomic emission spectrometric detector for gas chromatography (GCICPAED). The detection limits are several times to ten times lower than those of GCICPAED, especially for boron and iodine, of which 0.1 and 0.6 ng were detected respectively. In order to investigate the analytical performance of the detector, the relative response values of element carbon in different organic compounds were determined. The rule of the compound fragmentation in the plasma and the response mechanism are also discussed. It shows that there are definite relationships between the response of element carbon and the structures of the organic compounds.

关 键 词：气相色谱 微波诱导等离子体 原子发射光谱 检测器 C P SI SN B I 响应特性 碳 磷 硅 锡 硼 碘 

分 类 号：O657.3[理学—分析化学]