2000
DOI: 10.1007/s006040070052
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Experimental Designs Applied to Solid-Phase Derivative Spectrophotometry

Abstract: Abstract. Using two statistical models, based on the two-level full factorial designs and sequential experimental Doehlert designs, a simultaneous determination of cadmium and zinc by solid-phase derivative spectrophotometry has been proposed. These chemometric techniques have been used for the optimization of the instrumental and experimental variables of the system. The complexes formed between cadmium and zinc with 4-(2-pyridylazo) resorcinol, in the presence of potassium iodide, were ®xed on a dextran-type… Show more

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Cited by 13 publications
(5 citation statements)
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“…First derivative spectra in combination of different multivariate approaches like multiple linear regression (MLR), inverted least squares (ILS) and PLS was utilized for analysis of four phenolic compounds with UV-visible measurements and a fiber optic probe. 35 Bosque-Sendra et al 36 have described an experimental design that could be applied to solid phase derivative spectrophotometry. A solid-phase derivative method was based on two-level full factorial designs and sequential experimental Doehlert designs (using two statistical models).…”
Section: ·3 Applying Multivariate Calibration Methods To Dsmentioning
confidence: 99%
“…First derivative spectra in combination of different multivariate approaches like multiple linear regression (MLR), inverted least squares (ILS) and PLS was utilized for analysis of four phenolic compounds with UV-visible measurements and a fiber optic probe. 35 Bosque-Sendra et al 36 have described an experimental design that could be applied to solid phase derivative spectrophotometry. A solid-phase derivative method was based on two-level full factorial designs and sequential experimental Doehlert designs (using two statistical models).…”
Section: ·3 Applying Multivariate Calibration Methods To Dsmentioning
confidence: 99%
“…The Doehlert matrix [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] is a second order design, which has been widely used in several situations. It allows identification of critical points (maximum, minimum and saddle points) at each step of the optimization process.…”
Section: Introductionmentioning
confidence: 99%
“…Although the solid phase preconcentration flow systems have to become an important analytical approach for metal determination, many procedures are still optimised using univariate methodology. Particularly, in flow system in which several chemical and flow variables are optimised, the univariate methodology process may lead to erroneous conclusions when the effect of one particular variable is dependent to others [7]. Furthermore, such optimisation presents time consuming and is less economical.…”
Section: Introductionmentioning
confidence: 99%