Curve resolution procedure for isolating the spectra of unknown interferences from the sample spectrum in analyte determinations

被引:12
作者
Blasco-Gómez, F [1 ]
Campíns-Falcó, P [1 ]
Bosch-Reig, F [1 ]
Guomin, L [1 ]
机构
[1] Univ Valencia, Fac Quim, Dept Quim Analit, E-46100 Valencia, Spain
关键词
D O I
10.1039/a805569f
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The method described is based on the selection of a wavelength in the sample spectrum that is called 'reference wavelength', all measured wavelengths are previously assayed in order to select this reference wavelength. Several wavelengths can be used as the reference. The interferent spectrum is calculated as a function of the interferent absorbance at this wavelength, making use of the ratio between the absorbance of the analyte at the selected wavelength and at every measured wavelength. The proposed methodology can estimate the unknown interferent spectrum from the sample and pure analyte spectra. As a quality guarantee of the estimated spectrum, its shape is also estimated in spiked samples. Several samples were analysed, eight being pharmaceutical samples and the others synthetic. Good results were obtained for all of them.
引用
收藏
页码:2857 / 2863
页数:7
相关论文
共 36 条
[1]   RESOLUTION OF OVERLAPPING UV-VISIBLE ABSORPTION-BANDS - QUANTITATIVE-ANALYSIS OF TAUTOMERIC EQUILIBRIA [J].
ANTONOV, L ;
STOYANOV, S .
ANALYTICA CHIMICA ACTA, 1995, 314 (03) :225-232
[2]   THE KALMAN FILTER IN ANALYTICAL-CHEMISTRY [J].
BROWN, SD .
ANALYTICA CHIMICA ACTA, 1986, 181 :1-29
[3]   RESOLUTION OF OVERLAPPED ELECTROCHEMICAL PEAKS WITH THE USE OF THE KALMAN FILTER [J].
BROWN, TF ;
BROWN, SD .
ANALYTICAL CHEMISTRY, 1981, 53 (09) :1410-1417
[4]  
Campins-Falco P., 1988, ANALYST, V113, P1011, DOI DOI 10.1039/AN9881301011
[5]   H-POINT STANDARD ADDITIONS METHOD FOR RESOLUTION OF BINARY-MIXTURES WITH SIMULTANEOUS ADDITION OF BOTH ANALYTES [J].
CAMPINSFALCO, P ;
VERDUANDRES, J ;
BOSCHREIG, F .
ANALYTICA CHIMICA ACTA, 1995, 315 (03) :267-278
[6]   INTERACTIONS OF H+ AND CU(II) IONS WITH POLY(ADENYLIC ACID) - STUDY BY FACTOR-ANALYSIS [J].
CASASSAS, E ;
TAULER, R ;
MARQUES, I .
MACROMOLECULES, 1994, 27 (07) :1729-1737
[7]   STUDY OF ACID-BASE PROPERTIES OF FULVIC-ACIDS USING FLUORESCENCE SPECTROMETRY AND MULTIVARIATE CURVE RESOLUTION METHODS [J].
CASASSAS, E ;
MARQUES, I ;
TAULER, R .
ANALYTICA CHIMICA ACTA, 1995, 310 (03) :473-484
[8]   RESOLUTION OF CHEMICAL-SPECIES IN FLOW-INJECTION ANALYSIS BY USING SELF-MODELING CURVE RESOLUTION [J].
ERICKSON, BC ;
RUZICKA, J ;
KOWALSKI, BR .
ANALYTICA CHIMICA ACTA, 1989, 218 (02) :303-311
[9]   NOVEL TECHNIQUES FOR PEAK RECOGNITION AND DECONVOLUTION BY COMPUTER-AIDED PHOTODIODE ARRAY DETECTION IN HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY [J].
FELL, AF ;
SCOTT, HP ;
GILL, R ;
MOFFAT, AC .
JOURNAL OF CHROMATOGRAPHY, 1983, 282 (DEC) :123-140
[10]   A PRIORI ESTIMATES OF THE ELUTION PROFILES OF THE PURE COMPONENTS IN OVERLAPPED LIQUID-CHROMATOGRAPHY PEAKS USING TARGET FACTOR-ANALYSIS [J].
GEMPERLINE, PJ .
JOURNAL OF CHEMICAL INFORMATION AND COMPUTER SCIENCES, 1984, 24 (04) :206-212