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Qassim, Bushra B.
- Removal of phenolic compounds from aqueous solutions by petiole palm as a biosorbent
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Authors
Affiliations
1 Chemical Department, Collage of Science, Baghdad University, IQ
1 Chemical Department, Collage of Science, Baghdad University, IQ
Source
Asian Journal of Research in Chemistry, Vol 6, No 1 (2013), Pagination: 86-91Abstract
The aim of this work is to determine the potential of application of palm petiole as a biosorbent for removing of three phenolic compounds[phenol,2-chloro phenol(2-Cph) and 4- chloro phenol(4-Cph)] from aqueous solutions. The effect of pH, adsorbent dosage and contact time were investigated. Increase in the pH to neutrality resulted in the increase in the phenolic compounds adsorption capacity. The results showed that the increase in the petiole palm dosage to 0.5g/0.1L significantly increased the phenolic compounds adsorption rates. The adsorption process was fast, and it reached equilibrium in 30 min. contact time. The Freundlich and Langmuir adsorption models were used for mathematical description of the adsorption equilibrium and it was found that experimental data fitted very well to both Freundlich and Langmuir models. These results indicate clearly the efficiency of petiole as a low-cost solution for these compounds in aqueous solutions treatment and give some preliminary elements for the comprehension of the interactions between palm petiole as a bioadsorbent and the very polluting compounds from aqueous solutions.
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- Spectrophotometric and FIA methods for determination of Loratadine in pharmaceutical formulations based on charge transfer reaction
Abstract Views :211 |
PDF Views:2
Authors
Affiliations
1 Department of Chemistry, College of Science, University of Baghdad, Baghdad, IQ
1 Department of Chemistry, College of Science, University of Baghdad, Baghdad, IQ
Source
Asian Journal of Research in Chemistry, Vol 6, No 3 (2013), Pagination: 221-225Abstract
A rapid and sensitive Spectrophotometric and FIA method are described for the determination of Loratadine drug in both pure and dosage forms. The determination was based on the formation of charge transfer complexes between metol (N-methyl-p-hydroxy aniline) as - acceptor and the studied drugs as n-donors in acetonitrile a polar aprotic solvent.
The colored product is measured at max 540 nm . Under the optimum conditions calibration graph was observed a linear from 10-50 μg ml-1 LOR and with correlation coefficient not less than 0.9991which was suitable for the quantitative determination of the drug.The molar absorbitivity was 2.431 × 104L.mole-1.cm-1,and sandell sensitivity of 0.01162µg cm-2 .The relative standard deviation of the proposed method was 0. 5-2.4% depending on the concentration of LOR. The proposed method was successfully applied to the determination of LOR in tablets and syrups.
Keywords
Loratadine, Metol, Charge Transfer ComplexesReferences
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