Qualitative TLC determination of some polycyclic aromatic hydrocarbons in sugar-beet

Lončar, Eva S.; Kolarov, Ljiljana A.; Malbaša, Radomir V.; Škrbić, Biljana

doi:10.2298/jsc0510237l

Cited by 11 publications

(10 citation statements)

References 7 publications

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“…It was recrystallized for several times using acetone. A thin-layer chromatography method 8 and melting temperature determination equal to 372.15 K revealed its purity. Also, solubility amounts in studied monosolvents are in good agreement with previously published data.…”

Section: Methodsmentioning

confidence: 93%

Solubility of Phenanthrene in Ternary Mixtures of C₁−C₄ Alcohols at 298.2 K

Fakhree

Acree

Jouyban

2010

Ind. Eng. Chem. Res.

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Solubility of phenanthrene in ternary mixtures of ethanol +1-propanol + methanol, ethanol + 1-propanol + 2-propanol, 1-butanol + methanol + 2-propanol, 1-butanol + ethanol + 1-propanol, and 1-butanol + 1-propanol + methanol are reported. Five numerical methods were used to predict solubility of phenanthrene in studied ternary mixtures, and the mean relative deviation (MRD) was used as a criterion of error. The MRD values for studied mixtures of alcohols were 3.7%, 18.0%, 12.0%, 99.7%, and 12.7%, respectively, for methods I-V.

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Section: Methodsmentioning

confidence: 93%

Solubility of Phenanthrene in Ternary Mixtures of C₁−C₄ Alcohols at 298.2 K

Fakhree

Acree

Jouyban

2010

Ind. Eng. Chem. Res.

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“…It was recrystallized for several times using 2-propanone. A thin layer chromatography method and melting temperature determination equal to 372.15 K revealed its purity. Also, solubilities in ethanol and 2,2,4-trimethylpentane are in good agreement with previously published data. ,,− 2,2,4-Trimethylpentane (> 0.99 in mass fraction) and absolute ethanol (> 0.99 in mass fraction) were purchased from Merck.…”

Section: Methodsmentioning

confidence: 95%

“…13,14 ' EXPERIMENTAL METHOD Materials. Anthracene (purity 0.96 in mass fraction) was purchased from Fluka, and it was recrystallized several times using 2-propanone and ethyl acetate to yield a purified sample having a melting point of 488 K. Its purity was checked by a thin layer chromatography method, 15 and also the measured solubilities in ethanol and 2,2,4-trimethylpentane were compared with the corresponding data from the literature. Phenanthrene (purity > 0.98 in mass fraction) was purchased from Merck.…”

Section: ' Introductionmentioning

confidence: 99%

Solubility of Anthracene and Phenanthrene in Ethanol + 2,2,4-Trimethylpentane Mixtures at Different Temperatures

Shayanfar¹,

Eghrary²,

Sardari³

et al. 2011

J. Chem. Eng. Data

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Solubility of anthracene and phenanthrene in binary mixtures of ethanol þ 2,2,4-trimethylpentane at (298.2, 308.2, and 318.2) K are reported. Five numerical methods were used to predict the solubility of anthracene and phenanthrene in the studied binary solvent mixtures, and the mean relative deviation (MRD) was used as an error criterion. The MRD values for studied solvents are in acceptable range. ' INTRODUCTIONPolycyclic aromatic hydrocarbons (PAHs) are among environmental pollutants with very low aqueous solubility values. Anthracene (with aqueous solubility of 0.0076 mg 3 L -1 ) and phenanthrene (with aqueous solubility of 1.20 mg 3 L -1 ) are among the most commonly found PAHs in the environment. 1 Anthracene and phenanthrene are two isomeric forms of the simplest tricyclic aromatic hydrocarbon ( Figure 1) and were used as model compounds in this work. Phenanthrene has lower molecular total energy, and it is more stable than anthracene according to ab initio studies using molecular orbital method in the gas phase. 2 Solubility alteration of chemicals is required in many industrial applications, and the solvent mixing or cosolvency is one of the most frequent and feasible methods used in the industry. Using different ratios of the solvents, a wide range of solubility for a given compound can be achieved. The next parameter which could be employed in the chemical industry is the changing temperature of the system which make a significant contribution in solubilization or crystallization of a compound. Finding an optimum solvent composition and the appropriate temperature in solubility investigations is usually obtained by trial and error which is both time-consuming and costly. ' SOLUBILITY MODELSNumerous predictive models have been introduced to replace the trial-and-error approach or at least reduce the number of required experimental data. 1 One of these models, is the Jouyban-Acree model which correlates the solubility of a solute in binary solvent mixtures at various temperatures. 3where X m,T Sat is the solute mole fraction solubility in the mixed solvents at temperature T; x 1 and x 2 are the mole fractions of solvents 1 and 2 in the absence of the solute; X 1,T Sat and X 2,T Sat denote the mole fraction solubility of the solute in monosolvents 1 and 2; and J i terms are the solvent-solvent and solute-solvent interaction coefficients. Our previous results showed that the model could be trained using the experimental data at 298.2 K and be used to predict the solubility at other temperatures of interest with acceptable error. 4 These coefficients could also be computed using a minimum number of experimental solubility data in binary solvents and then be employed to predict solubility at other solvent compositions. To provide trained versions of the model to predict the solubility in binary solvents without employing solubility data in mixed solvents, a number of attempts were made. The binary interaction terms (J terms) have been correlated with the Hildebrand solubility parameters of the sol...

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“…Materials. Anthracene (purity 0.96 in mass fraction) was purchased from Fluka, and it was recrystallized several times from 2-propanone and ethyl acetate to yield a purified sample having a melting point of 488 K. Its purity was checked by a thin layer chromatography method, 6 and also the measured solubilities in a number of monosolvents were compared with the corresponding data from the literature. Methanol (0.995 in mass fraction), ethanol (0.999 in mass fraction), 2-propanol (0.995 in mass fraction), and 2-propanone (0.995 in mass ln The binary solvent mixtures were prepared by mixing the appropriate volumes of the solvents, and then the mole fractions of the solvents were computed from the densities of the neat solvents.…”

Section: Experimental Methodsmentioning

confidence: 99%

Solubility of Anthracene in C₁−C₃ Alcohols from (298.2 to 333.2) K and Their Mixtures with 2-Propanone at 298.2 K

et al. 2010

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The anthracene solubility in methanol, ethanol, 1-propanol, and 2-propanol from (298.2 to 333.2 K) and also in binary solvent mixtures of 2-propanone + C 1 -C 3 alcohols at 298.2 K was reported. The van't Hoff equation was used for correlation of the solubility data in monosolvents at different temperatures. The solubility of anthracene in mixed solvents was predicted using previously developed quantitative structure-property relationships (QSPR) that required knowledge of the solubility data in monosolvents. The overall mean percentage deviation of the correlated solubilities in monosolvents at different temperatures was 4.8 %. The corresponding value for solubility prediction methods in solvent mixtures varied from (8.5 to 11.9) %. Using ab initio prediction methods, the overall mean percentage deviations varied from (14.7 to 15.8) %.

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Qualitative TLC determination of some polycyclic aromatic hydrocarbons in sugar-beet

Cited by 11 publications

References 7 publications

Solubility of Phenanthrene in Ternary Mixtures of C₁−C₄ Alcohols at 298.2 K

Solubility of Phenanthrene in Ternary Mixtures of C₁−C₄ Alcohols at 298.2 K

Solubility of Anthracene and Phenanthrene in Ethanol + 2,2,4-Trimethylpentane Mixtures at Different Temperatures

Solubility of Anthracene in C₁−C₃ Alcohols from (298.2 to 333.2) K and Their Mixtures with 2-Propanone at 298.2 K

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Qualitative TLC determination of some polycyclic aromatic hydrocarbons in sugar-beet

Cited by 11 publications

References 7 publications

Solubility of Phenanthrene in Ternary Mixtures of C1−C4 Alcohols at 298.2 K

Solubility of Phenanthrene in Ternary Mixtures of C1−C4 Alcohols at 298.2 K

Solubility of Anthracene and Phenanthrene in Ethanol + 2,2,4-Trimethylpentane Mixtures at Different Temperatures

Solubility of Anthracene in C1−C3 Alcohols from (298.2 to 333.2) K and Their Mixtures with 2-Propanone at 298.2 K

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Solubility of Phenanthrene in Ternary Mixtures of C₁−C₄ Alcohols at 298.2 K

Solubility of Phenanthrene in Ternary Mixtures of C₁−C₄ Alcohols at 298.2 K

Solubility of Anthracene in C₁−C₃ Alcohols from (298.2 to 333.2) K and Their Mixtures with 2-Propanone at 298.2 K