| 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 |
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| 引用本文： | 洪煜琛,王秋泉,严华,梁敬,郭旭明,黄本立.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[J].光谱学与光谱分析,2003,23(2):354-357. |
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| 作者姓名： | 洪煜琛 王秋泉 严华 梁敬 郭旭明 黄本立 |
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| 作者单位： | 厦门大学化学系教育部现代分析科学重点实验室,福建,厦门,361005 |
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| 基金项目： | 国家自然科学基金(20005006,20175019)，教育部高等学校博士学科点专项科研基金(20020384003) |
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| 摘 要： | 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。
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| 关 键 词： | 原子荧光光谱分析 高效液相色谱 联用技术 信号采集与处理 傅里叶变换 小波变换 |
| 文章编号： | 1000-0593(2003)02-0354-04 |
| 修稿时间： | 2002年10月10 |
Digital Signal Acquisition and Processing Software for Atomic Fluorescence Spectrometry and Its Application to Elemental Speciation |
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| HONG Yu-chen,WANG Qiu-quan,YAN Hua,LIANG Jing,GUO Xu-ming and HUANG Ben-li.Digital Signal Acquisition and Processing Software for Atomic Fluorescence Spectrometry and Its Application to Elemental Speciation[J].Spectroscopy and Spectral Analysis,2003,23(2):354-357. |
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| Authors: | HONG Yu-chen WANG Qiu-quan YAN Hua LIANG Jing GUO Xu-ming and HUANG Ben-li |
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| Institution: | Department of Chemistry, MOE Key Laboratory of Analytical Sciences, Xiamen University, Xiamen 361005, China. |
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| Abstract: | 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. |
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| Keywords: | Atomic fluorescence spectrometry HPLC Hyphenated techniques Signal acquisition and processing Wavelet trans-forms |
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