Comparison of quantification strategies for one-point standard addition calibration: The heteroscedastic case

被引：3
|
作者：
Brown, Richard J. C. [1 ]
Gillam, Thomas P. S. [2 ]
机构：
[1] Natl Phys Lab, Analyt Sci Div, Teddington TW11 0LW, Middx, England
[2] Univ Cambridge, Cavendish Lab, Dept Phys, Cambridge CB3 0HE, England
来源：
MEASUREMENT | 2012年 / 45卷 / 06期
关键词：
Standard addition; Calibration; Precision; Extrapolation; Comparison; SYSTEMATIC-ERROR;
D O I：
10.1016/j.measurement.2012.03.020
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two quantification strategies for one-point standard addition calibration have been compared mathematically. One strategy involved the extrapolation of measurement points to their intercept with the x-axis to determine the analyte content in the unknown sample, and the other strategy is based upon direct calculation of the analyte content in the unknown sample using the instrumental responses obtained during measurement. The cases of both conventional standard addition calibration (C-SAC) and sequential standard addition calibration (S-SAC) have been considered. The heteroscedastic situation has been considered, where the relative precision of instrumental responses is constant. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1670 / 1673
页数：4
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