Spectrophotometric determination of thorium (IV) with Xylenol Orange and Methylthymol Blue
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Solid Phase Spectrophotometric Determination Of Cobalt By Xylenol Orange
A simple and sensitive solid phase spectrophotometric method for the determination of cobalt is proposed based on the reaction between cobalt and xylenol orange (XO). The reaction product is fixed on the anionic exchanger resin sephadex QAE A-25 at pH= 5. The optical absorbance of the anionic gel like resin, packed in a 1.00 mm cell is directly measured at 588.0 nm. The linear range of calibrat...
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Methylxylenol blue or S^'-bis-Z^jiV'-diicarboxymethylJaminomethyl-^-xylenolsulfonephthalein belongs to the group of metallochromic indicators prepared by Körbt and Přibil [1] via condensation of common sulfonephthalein dyes with formaldehyde and iminodiacetic acid. Recently it has been newly prepared by Cherkesov and co-workers [2] and named ^-xylenolphthalexon S. Two indicators from this group...
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A partial least squares (PLS) calibration model was developed for the simultaneous spectrophotometricdetermination of Pb (ΙΙ), Cu (ΙΙ) and Ni (ΙΙ) using xylenol orange as a chromogenic reagent. The parameterscontrolling behavior of the system were investigated and optimum conditions were selected. The calibrationgraphs were linear in the ranges of 0.0–9.091, 0.0–2.719 and 0.0–2.381 ppm for lead...
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a partial least squares (pls) calibration model was developed for the simultaneous spectrophotometricdetermination of pb (ιι), cu (ιι) and ni (ιι) using xylenol orange as a chromogenic reagent. the parameterscontrolling behavior of the system were investigated and optimum conditions were selected. the calibrationgraphs were linear in the ranges of 0.0–9.091, 0.0–2.719 and 0.0–2.381 ppm for lead...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1965
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.14.229