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Absorption Spectra of the 4f Electron Transitions of the Praseodymium Complex with 1-Cyclopropyl-6-fluoro-1,4-dihydro-7-(4-ethyl-1-piperazinyl)-4-oxo-3-quinoline Carboxylic Acid Hydrochloride and Its Analytical Application
Absorption Spectra of the 4f Electron Transitions of the Praseodymium Complex with 1-Cyclopropyl-6-fluoro-1,4-dihydro-7-(4-ethyl-1-piperazinyl)-4-oxo-3-quinoline Carboxylic Acid Hydrochloride and Its Analytical Application
- Source :
- Analytical Sciences. 17:1091-1094
- Publication Year :
- 2001
- Publisher :
- Springer Science and Business Media LLC, 2001.
-
Abstract
- The absorption spectra of the praseodymium complex with 1-cyclopropyl-6-fluoro-1,4-dihydro-7-(4-ethyl-1-piperazinyl)-4-oxo-3- quinoline carboxylic acid hydrochloride (NNFX) has been studied by normal and derivative spectrophotometry. The complex showed maximum absorption at 350 nm at pH 6.0. The stoichiometry of the Pr-NNFX complex was calculated by the molar ratio and continuous variation methods. The ratio of Pr to NNFX was 1:3. The absorption bands of the 4f electron transitions of the praseodymium complex with NNFX are enhanced markedly, especially the wavelength at 481 nm. Using the third-derivative spectrum, the calibration graph is linear over the range 2.5 x 10(-5)-3.5 x 10(-4) mol dm-3 for praseodymium. The detection limits (signal-to-noise ratio of 2) is 1.4 x 10(-6) mol dm-3. The relative standard deviation is 1.2% for 7.0 x 10(-5) mol dm-3 of praseodymium. A method for the direct determination of praseodymium in rare earth mixtures with good accuracy and selectivity is described.
- Subjects :
- Detection limit
chemistry.chemical_classification
Absorption spectroscopy
medicine.diagnostic_test
Hydrochloride
Praseodymium
Carboxylic acid
Quinoline
Analytical chemistry
chemistry.chemical_element
Analytical Chemistry
chemistry.chemical_compound
chemistry
Spectrophotometry
medicine
Physical chemistry
Absorption (chemistry)
Subjects
Details
- ISSN :
- 13482246 and 09106340
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Analytical Sciences
- Accession number :
- edsair.doi.dedup.....0f6aff486d7e35acdc8b2f96d4880c7b
- Full Text :
- https://doi.org/10.2116/analsci.17.1091