Deductive Prediction of Precision in Measurement, Calibration, and Standard Addition Method in Atomic Absorption Spectrometry for Cadmium
详细信息 查看全文
- 作者：Rieko Matsuda ; Yuzuru Hayashi ; Kumiko Sasaki ; Yukio Saito ; Kazuo Iwaki ; Hiroaki Harakawa ; Masami Satoh ; Yukiharu Ishizuki ; and Tsuneo Kato
- 刊名：Analytical Chemistry
- 出版年：1998
- 出版时间：January 15, 1998
- 年：1998
- 卷：70
- 期：2
- 页码：319 - 327
- 全文大小：129K
- 年卷期：v.70,no.2(January 15, 1998)
- ISSN：1520-6882
文摘
The relative standard deviation of measurements inatomic absorption spectrometry for cadmium determination is predicted by the signal fluctuation model, whichis made up of the white noise and Markov process. Thestandard deviation (SD), 
, of the white noise andSD,
, and autocorrelation parameter, 
, of theMarkovprocess are determined from the power spectrum of theactual signal fluctuation in the system and in turn areputto use for the uncertainty prediction of measurements inthe time space. The confidence intervals of theconventional calibration and standard addition method arecalculated from the predicted SD of measurements.
, of the white noise andSD,, and autocorrelation parameter, , of theMarkovprocess are determined from the power spectrum of theactual signal fluctuation in the system and in turn areputto use for the uncertainty prediction of measurements inthe time space. The confidence intervals of theconventional calibration and standard addition method arecalculated from the predicted SD of measurements.