Weighted least squares in calibration: the problem with using "quality coefficients" to select weighting formulas.

[1]  J. Tellinghuisen.  Least squares with non-normal data: estimating experimental variance functions. , 2008, The Analyst.

[2]  H. Neels,et al.  Comparison of electron and chemical ionization modes by validation of a quantitative gas chromatographic-mass spectrometric assay of new generation antidepressants and their active metabolites in plasma. , 2007, Journal of chromatography. A.

[3]  Jian Wang,et al.  Analyses of macrolide antibiotic residues in eggs, raw milk, and honey using both ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry and high-performance liquid chromatography/tandem mass spectrometry. , 2007, Rapid communications in mass spectrometry : RCM.

[4]  Xiaoyan Chen,et al.  Simultaneous determination of trans-resveratrol-3-O-glucoside and its two metabolites in rat plasma using liquid chromatography with ultraviolet detection. , 2007, Journal of chromatography. B, Analytical technologies in the biomedical and life sciences.

[5]  Rafael Menck de Almeida,et al.  Gas chromatographic-mass spectrometric method for the determination of the herbicides paraquat and diquat in plasma and urine samples. , 2007, Journal of chromatography. B, Analytical technologies in the biomedical and life sciences.

[6]  J. Tellinghuisen.  Weighted least-squares in calibration: what difference does it make? , 2007, The Analyst.

[7]  M. Venner,et al.  Quantitative determination of the macrolide antibiotic tulathromycin in plasma and broncho-alveolar cells of foals using tandem mass spectrometry. , 2007, Journal of chromatography. B, Analytical technologies in the biomedical and life sciences.

[8]  D. Durden.  Positive and negative electrospray LC-MS-MS methods for quantitation of the antiparasitic endectocide drugs, abamectin, doramectin, emamectin, eprinomectin, ivermectin, moxidectin and selamectin in milk. , 2007, Journal of chromatography. B, Analytical technologies in the biomedical and life sciences.

[9]  B. Miljković,et al.  High-performance liquid chromatographic method for the determination of moclobemide and its two major metabolites in human plasma. , 2007, Journal of pharmaceutical and biomedical analysis.

[10]  Jacques O De Beer,et al.  Assessment of quality performance parameters for straight line calibration curves related to the spread of the abscissa values around their mean. , 2007, Analytica chimica acta.

[11]  A. Barr,et al.  Determination of Clozapine and its Metabolite, Norclozapine in Various Biological Matrices Using High-Performance Liquid Chromatography , 2007, Drug development and industrial pharmacy.

[12]  J. Tellinghuisen.  Statistical error in isothermal titration calorimetry: variance function estimation from generalized least squares. , 2005, Analytical biochemistry.

[13]  M. Burns,et al.  Analysis and interpretation of data from real-time PCR trace detection methods using quantitation of GM soya as a model system , 2004, Analytical and bioanalytical chemistry.

[14]  D. Zhong,et al.  Determination of vertilmicin in rat serum by high-performance liquid chromatography using 1-fluoro-2,4-dinitrobenzene derivatization. , 2003, Journal of chromatography. B, Analytical technologies in the biomedical and life sciences.

[15]  Saeed Rezaee,et al.  Non-linear heteroscedastic regression model for determination of methotrexate in human plasma by high-performance liquid chromatography. , 2003, Journal of chromatography. B, Analytical technologies in the biomedical and life sciences.

[16]  A. Falcão,et al.  Linear regression for calibration lines revisited: weighting schemes for bioanalytical methods. , 2002, Journal of chromatography. B, Analytical technologies in the biomedical and life sciences.

[17]  A. Falcão,et al.  Lamotrigine analysis in blood and brain by high-performance liquid chromatography. , 2001, Journal of chromatography. B, Biomedical sciences and applications.

[18]  J. Tellinghuisen.  Statistical Error Calibration in UV-Visible Spectrophotometry , 2000 .

[19]  R. Gupta,et al.  Choosing the calibration model in assay validation. , 1999, Journal of pharmaceutical and biomedical analysis.

[20]  L. A. Currie,et al.  Guidelines for calibration in analytical chemistry. Part I. Fundamentals and single component calibration (IUPAC Recommendations 1998) , 1998 .

[21]  P. Modamio,et al.  Determination of analytical error function for beta-blockers as a possible weighting method for the estimation of the regression parameters. , 1996, Journal of pharmaceutical and biomedical analysis.

[22]  K. Baumann,et al.  Appropriate calibration functions for capillary electrophoresis II. Heteroscedasticity and its consequences , 1995 .

[23]  Johanna Smeyers-Verbeke,et al.  The quality coefficient as a tool in decisions about the quality of calibration in graphite furnace atomic absorption spectrometry , 1992 .

[24]  Marie Davidian,et al.  Regression and calibration with nonconstant error variance , 1990 .

[25]  D. Ruppert,et al.  Transformation and Weighting in Regression , 1988 .

[26]  P. R. Bevington,et al.  Data Reduction and Error Analysis for the Physical Sciences , 1969 .

[27]  J. Wolfowitz,et al.  An Introduction to the Theory of Statistics , 1951, Nature.

[28]  J. Tellinghuisen.  Understanding Least Squares through Monte Carlo Calculations , 2005 .

[29]  H. T. Karnes,et al.  Calibration and validation of linearity in chromatographic biopharmaceutical analysis. , 1991, Journal of pharmaceutical and biomedical analysis.

[30]  James N. Miller.  Basic statistical methods for Analytical Chemistry. Part 2. Calibration and regression methods. A review , 1991 .

[31]  D. Massart,et al.  Exploratory study on median-based robust regression methods for linear calibration in atomic absorption spectrometric analysis , 1989 .

[32]  M. Thompson.  Variation of precision with concentration in an analytical system , 1988 .

[33]  J. Tyson,et al.  A Comparison of Curve Fitting Algorithms for Flame Atomic Absorption Spectrometry , 1986 .

[34]  G. R. Kornblum,et al.  Determination of strongly curved calibration graphs in flame atomic-absorption spectrometry: comparison of manually drawn and computer-calculated graphs , 1985 .

[35]  J. Harnly,et al.  Calibration and curve fitting for extended range AAS , 1984 .

[36]  J. Knecht,et al.  Prozentuales und logarithmisches Verfahren zur Berechnung von Eichkurven , 1974 .