高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (10): 1459-1463.

• 论文 • 上一篇    下一篇

光电二极管阵列等离子体原子发射光谱分析背景智能化实时校正研究

陈元, 孙大海, 黄颖辉, 张展霞   

  1. 中山大学化学系, 广州, 510275
  • 收稿日期:1993-12-05 修回日期:1994-05-03 出版日期:1994-10-24 发布日期:1994-10-24
  • 通讯作者: 张展霞.
  • 作者简介:陈元,男,26岁,硕士研究生.
  • 基金资助:

    国家自然科学基金;高等学校博士学科点专项研究基金

Real-Time Intelligent Background Correction in Inductirely Coupled Plasma Atomic Emission Spectrometry Using a Photodiode Array Spectrometer

CHENY Yuan, SUN Da-Hai, HUANG Ying-Hui, ZHANG Zhan-Xia   

  1. Department of Chemistry, Zhongshan University, Guangzhou, 510275
  • Received:1993-12-05 Revised:1994-05-03 Online:1994-10-24 Published:1994-10-24

摘要: 提出了用于光电二极管阵列等离子体原子发射光谱分析背景智能化实时校正的方法。采用二次微分结合原ICP光谱法,在不经微分噪声过滤的基础上,实现快速准确的谱线识别。简单背景采用多项式模型,结构背景及翼展干扰采用概率统计模型。通过对高浓度Ca存在下A1及La的测定,表明本方法能够准确地校正背景干扰。

关键词: 光电二极管阵列, 电感耦合等离子体, 原子发射光谱法, 智能化背景校正

Abstract: Amodified method for real-time intelligent background correction in inductively coupled plasma atomic emission spectrometry using a laboratory-constructed photodiode ar ray spectrometer is proposed.Apolynomial model and a statistical model are used to fit the background, but better results can be obtained for the structured background and line wings by the statistical model.Prior knowledge of sample composition and visual inspection of the spectral window are not required.The method is evaluated by determining Al and La in Ca matrix.

Key words: Photodiode array, Inductively coupled plasma, Atomic emission spectrometry, Intelligent background correction