Multivariate Calibration of a Photodiode Array Spectrometer for Atomic Emission Spectroscopy
| Autor: | Mark Glick, Gary M. Hieftje, K. R. Brushwyler |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Spectrometer
business.industry Chemistry Stray light 010401 analytical chemistry Astrophysics::Instrumentation and Methods for Astrophysics Atomic emission spectroscopy 01 natural sciences Spectral line 0104 chemical sciences Photodiode law.invention 010309 optics Optics law 0103 physical sciences Calibration Emission spectrum business Instrumentation Spectroscopy Echelle grating |
| Zdroj: | Applied Spectroscopy. 45:328-333 |
| ISSN: | 1943-3530 0003-7028 |
| DOI: | 10.1366/0003702914337218 |
| Popis: | Multiple linear regression with stepwise selection of variables is used to calibrate a photodiode array spectrometer for inductively coupled plasma-atomic emission spectrometry. The spectrometer uses a preliminary wavelength selector and an echelle grating (without an order-sorting prism) to provide high-resolution information over a wide wavelength range. Chemical systems exhibiting various obstacles to quantitation, including spectral-line overlap, interference due to broadened spectral lines, and stray light from a line of high intensity, are calibrated successfully with a multivariate technique. Sample sets used for calibration are constructed with the use of simplex lattice designs, and the method of cross-validation is used to assess the predictive performance of the calibration models. Conventional univariate calibration using spectral peak areas is performed for comparison. |
| Databáze: | OpenAIRE |
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