Matches in SemOpenAlex for { <https://semopenalex.org/work/W1553977498> ?p ?o ?g. }
Showing items 1 to 83 of
83
with 100 items per page.
- W1553977498 endingPage "166" @default.
- W1553977498 startingPage "161" @default.
- W1553977498 abstract "An analytical method for the spectrophotometric determination of some phenolic compounds, i.e.: pyrocathecol and pyrogallol based on their redox reaction with iron(III)-phenanthroline complex has been developed. These two compounds, in appropriate conditions, reduce iron(III)-phenanthroline complex to yield very stable and color-intense complex of iron(II)-phenanthroline, [Fe(phen)2]2+, whose concentration is equivalent to the amount of pyrocathecol or pyrogallol in the solution, and is easily detected by spectrophotometric method. Some parameters influencing the sensitivity of the determination were optimized. These included maximum absorption wavelength, pH of the solution, time and temperature of heatingand reagent to analyte minimum mole-ratio. Using the optimum conditions obtained, the analytical performance of the method was examined and the developed method was then applied to analyzed pyrocathecol and pyrogallol contents in several river water of Yogyakarta, Indonesia. Result of the study showed that the optimum conditions for the determination of pyrocathecol are as follows: maximum absorption wavelength (lmax) at 510 nm, pH of the solution = 4, heating time = 120 min, heating temperature = 70 0C and the minimum mole ratio of reagent to analyte is 8. On the other hand, the optimum conditions for the determination of pyrogallol are as follows: maximum absorption wavelength (lmax) at 510 nm, pH of the solution = 5, heating time = 90 min, heating temperature = 90 0C and the minimum mole ratio of reagent to analyte is 7. At the corresponding conditions of analysis, calibration curves for pyrocathecol and pyrogallol are linear in the range concentration of 0.00 - 0.16 ppm and 0.00 - 0.24 ppm, respectively. The correlation coefficients for both compounds were found to be higher than 0.998 and the detection limits went down below 0.07 ppm. It has been demonstrated that the developed method can be applied for the determination of pyrocathecol and pyrogallol contents in natural samples. Keywords: Spectrophotometry, phenolic compounds, 1,10-phenanthroline, redox reaction" @default.
- W1553977498 created "2016-06-24" @default.
- W1553977498 creator A5005533797 @default.
- W1553977498 creator A5014559002 @default.
- W1553977498 creator A5053616680 @default.
- W1553977498 date "2010-06-09" @default.
- W1553977498 modified "2023-10-03" @default.
- W1553977498 title "SPECTROPHOTOMETRIC DETERMINATION OF PYROCATHECOL AND PYROGALLOL BASED ON THEIR REDOX REACTION WITH IRON(III)/PHENANTHROLINE SYSTEM" @default.
- W1553977498 cites W2481422797 @default.
- W1553977498 cites W562697611 @default.
- W1553977498 cites W2605521122 @default.
- W1553977498 doi "https://doi.org/10.22146/ijc.21911" @default.
- W1553977498 hasPublicationYear "2010" @default.
- W1553977498 type Work @default.
- W1553977498 sameAs 1553977498 @default.
- W1553977498 citedByCount "4" @default.
- W1553977498 countsByYear W15539774982015 @default.
- W1553977498 countsByYear W15539774982017 @default.
- W1553977498 countsByYear W15539774982019 @default.
- W1553977498 crossrefType "journal-article" @default.
- W1553977498 hasAuthorship W1553977498A5005533797 @default.
- W1553977498 hasAuthorship W1553977498A5014559002 @default.
- W1553977498 hasAuthorship W1553977498A5053616680 @default.
- W1553977498 hasBestOaLocation W15539774981 @default.
- W1553977498 hasConcept C10390740 @default.
- W1553977498 hasConcept C113196181 @default.
- W1553977498 hasConcept C120665830 @default.
- W1553977498 hasConcept C121332964 @default.
- W1553977498 hasConcept C125287762 @default.
- W1553977498 hasConcept C134121241 @default.
- W1553977498 hasConcept C178790620 @default.
- W1553977498 hasConcept C179104552 @default.
- W1553977498 hasConcept C185592680 @default.
- W1553977498 hasConcept C191897082 @default.
- W1553977498 hasConcept C192562407 @default.
- W1553977498 hasConcept C2776344562 @default.
- W1553977498 hasConcept C2777660389 @default.
- W1553977498 hasConcept C2780343419 @default.
- W1553977498 hasConcept C40875361 @default.
- W1553977498 hasConcept C43617362 @default.
- W1553977498 hasConcept C55904794 @default.
- W1553977498 hasConcept C76046532 @default.
- W1553977498 hasConceptScore W1553977498C10390740 @default.
- W1553977498 hasConceptScore W1553977498C113196181 @default.
- W1553977498 hasConceptScore W1553977498C120665830 @default.
- W1553977498 hasConceptScore W1553977498C121332964 @default.
- W1553977498 hasConceptScore W1553977498C125287762 @default.
- W1553977498 hasConceptScore W1553977498C134121241 @default.
- W1553977498 hasConceptScore W1553977498C178790620 @default.
- W1553977498 hasConceptScore W1553977498C179104552 @default.
- W1553977498 hasConceptScore W1553977498C185592680 @default.
- W1553977498 hasConceptScore W1553977498C191897082 @default.
- W1553977498 hasConceptScore W1553977498C192562407 @default.
- W1553977498 hasConceptScore W1553977498C2776344562 @default.
- W1553977498 hasConceptScore W1553977498C2777660389 @default.
- W1553977498 hasConceptScore W1553977498C2780343419 @default.
- W1553977498 hasConceptScore W1553977498C40875361 @default.
- W1553977498 hasConceptScore W1553977498C43617362 @default.
- W1553977498 hasConceptScore W1553977498C55904794 @default.
- W1553977498 hasConceptScore W1553977498C76046532 @default.
- W1553977498 hasIssue "3" @default.
- W1553977498 hasLocation W15539774981 @default.
- W1553977498 hasLocation W15539774982 @default.
- W1553977498 hasLocation W15539774983 @default.
- W1553977498 hasOpenAccess W1553977498 @default.
- W1553977498 hasPrimaryLocation W15539774981 @default.
- W1553977498 hasRelatedWork W2014061863 @default.
- W1553977498 hasRelatedWork W2062214928 @default.
- W1553977498 hasRelatedWork W2065375057 @default.
- W1553977498 hasRelatedWork W2362432972 @default.
- W1553977498 hasRelatedWork W2368686301 @default.
- W1553977498 hasRelatedWork W2370623326 @default.
- W1553977498 hasRelatedWork W2378108701 @default.
- W1553977498 hasRelatedWork W2381713013 @default.
- W1553977498 hasRelatedWork W2383967594 @default.
- W1553977498 hasRelatedWork W2949184651 @default.
- W1553977498 hasVolume "2" @default.
- W1553977498 isParatext "false" @default.
- W1553977498 isRetracted "false" @default.
- W1553977498 magId "1553977498" @default.
- W1553977498 workType "article" @default.