Simultaneous multielemental determination using a low-resolution inductively coupled plasma spectrometer/diode array detection system
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- 作者：Pimentel ; Maria Fernanda ; de Barros Neto ; Bení ; cio ; de Araú ; jo ; Má ; rio Cé ; sar Ugulino ; et. al.
- 关键词：Multivariate calibration ; Plasma emission spectrometry ; Photodiode array
- 刊名：Spectrochimica Acta Part B: Atomic Spectroscopy
- 出版年：1997
- 出版时间：December 19, 1997
- 年：1997
- 卷：52
- 期：1
- 页码：2151-2161
- 全文大小：780 K
文摘
This work presents a versatile method for simultaneous multielemental analysis using detection with photodiode arrays and multivariate calibration techniques. A multidetection system based on an array of 1 024 photodiodes was built and adapted to a commercial plasma emission scanning spectrometer. Spectral data were acquired at low resolution, allowing simultaneous monitoring of a broad spectral range and resulting in very informative but considerably overlapped spectra. Partial least squares and principal component regressions were employed to minimize overlapping problems. A numerical procedure for window selection was also developed.