Signal Acquisition and Processing for Atomic Fluorescence Spectrometer Coupled with HPLC and Its Application to Cadmium Speciation

原子荧光光谱分析是一种高灵敏度和高选择性的检测手段，以氢化物发生作为进样方法对一些在环境中至关重要的元素进行测定时具有其它原子光谱分析方法无可比拟的优点。涉及元素形态分析方法的建立时要求把分离手段和原子荧光光谱检测进行联用，如气相色谱（GC）、高效液相色谱(HPLC)和毛细管电泳(CE)等，从而实现对元素的形态分析。本论文的工作就是建立高效液相色谱（HPLC）与原子荧光光谱（AFS）联用系统应用于元素的形态分析。 第一章：前言。主要介绍了氢化物发生法及原子荧光光谱，对原子荧光光谱仪作为联用技术在线检测器的数据采集和处理作了评述，详细调研了高效液相色谱-原子荧光光谱联用应用于元素形态分析，并提...Atomic fluorescence spectrometry (AFS) is a very sensitive and selective method for the determination of a number of environmentally biomedically important elements. When it comes to speciation of these elements, combination of AFS and separate techniques is required, such as gas chromatography (GC), high performance liquid chromatography (HPLC) and capillary electrophoresis (CE). In this work, th...学位：理学硕士院系专业：化学化工学院化学系_分析化学学号：20002500

原子光谱/质谱分析中蒸气发生法进样的非传统技术的研究

报道了在原子光谱 /质谱分析中化学蒸气发生法进样方面的一些最新研究成果 ,包括镍的蒸气发生法的研究 ,共氢化增感效应的研究 ,氢化物发生气相富集技术的研究等 ,以及利用现代质谱技术实现对可形成氢化物元素化学形态直接测定的可行性的探讨

高效液相色谱-原子荧光光谱联用中的连续数字信号采集和处理

本文报道了利用Visual C++编写原子荧光光谱仪的数字信号采集和处理软件,成功地解决了原子荧光光谱仪作为联用技术在线检测器的数据采集问题,实现了通过计算机串口对瞬变光谱信号的连续采集和实时的曲线绘制。本工作采用Savitzky-Golay平滑、傅里叶变换滤波和小波滤噪三种数据处理技术对采集数据进行平滑和滤波,并对其处理效果进行了比较。并以镉为例,验证了高效液相色谱与国产原子荧光光谱联用应用于形态分析的可能性

Digital signal acquisition and processing software for atomic fluorescence spectrometry and its application to elemental speciation

A program was developed to collect and process digital signal by using Visual C + + for atomic fluorescence spectrometry (AFS). The software solves the data acquisition problem of coupling AFS with HPLC and other successive separation techniques. This program employs three signal processing techniques, i.e. Savitzky-Golay smoothing, Fourier filter and wavelet denoising, to smooth and filter the noisy data. The processes and comparisons of these techniques have been discussed. The program was successfully applied to the preliminary study of Cd speciation. by using cation exchange HPLC coupled to AFS, and will provide a new possibility for extending the application of atomic fluorescence spectrometry to the field of elemental speciation analysis