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Application of an activated carbon-based support for magnetic solid phase extraction followed by spectrophotometric determination of tartrazine in commercial beverages.

Rodríguez JA, Escamilla-Lara KA, Guevara-Lara A, Miranda JM, Páez-Hernández ME - Int J Anal Chem (2015)

Bottom Line: The tartrazine eluted from the magnetic support was determined by spectrophotometry.Under optimal conditions, the linear range of the calibration curve ranges from 3 to 30 mg L(-1), with a limit of detection of 1 mg L(-1).A precision of <5.0% was obtained in all cases and no significant differences were observed (P < 0.05).

View Article: PubMed Central - PubMed

Affiliation: Laboratorio 2, Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, 42184 Mineral de la Reforma, HGO, Mexico.

ABSTRACT
A method is presented for magnetic solid phase extraction of tartrazine from nonalcoholic beverages. The method involves the extraction and clean-up by activated carbon covered with magnetite dispersed in the sample, followed by the magnetic isolation and desorption of the analyte by basified methanol. The tartrazine eluted from the magnetic support was determined by spectrophotometry. Under optimal conditions, the linear range of the calibration curve ranges from 3 to 30 mg L(-1), with a limit of detection of 1 mg L(-1). The method was validated by comparing the results with those obtained by HPLC. A precision of <5.0% was obtained in all cases and no significant differences were observed (P < 0.05).

No MeSH data available.


Related in: MedlinePlus

Adsorption experiment. From left to right: dissolution of tartrazine, mixture of tartrazine with magnetic modified carbon, and magnetic support separation.
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fig3: Adsorption experiment. From left to right: dissolution of tartrazine, mixture of tartrazine with magnetic modified carbon, and magnetic support separation.

Mentions: The extraction of tartrazine from standard solutions using the synthetized modified carbon is shown in Figure 3. It is possible to visually verify the cleaning process of the tartrazine solution.


Application of an activated carbon-based support for magnetic solid phase extraction followed by spectrophotometric determination of tartrazine in commercial beverages.

Rodríguez JA, Escamilla-Lara KA, Guevara-Lara A, Miranda JM, Páez-Hernández ME - Int J Anal Chem (2015)

Adsorption experiment. From left to right: dissolution of tartrazine, mixture of tartrazine with magnetic modified carbon, and magnetic support separation.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4383302&req=5

fig3: Adsorption experiment. From left to right: dissolution of tartrazine, mixture of tartrazine with magnetic modified carbon, and magnetic support separation.
Mentions: The extraction of tartrazine from standard solutions using the synthetized modified carbon is shown in Figure 3. It is possible to visually verify the cleaning process of the tartrazine solution.

Bottom Line: The tartrazine eluted from the magnetic support was determined by spectrophotometry.Under optimal conditions, the linear range of the calibration curve ranges from 3 to 30 mg L(-1), with a limit of detection of 1 mg L(-1).A precision of <5.0% was obtained in all cases and no significant differences were observed (P < 0.05).

View Article: PubMed Central - PubMed

Affiliation: Laboratorio 2, Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, 42184 Mineral de la Reforma, HGO, Mexico.

ABSTRACT
A method is presented for magnetic solid phase extraction of tartrazine from nonalcoholic beverages. The method involves the extraction and clean-up by activated carbon covered with magnetite dispersed in the sample, followed by the magnetic isolation and desorption of the analyte by basified methanol. The tartrazine eluted from the magnetic support was determined by spectrophotometry. Under optimal conditions, the linear range of the calibration curve ranges from 3 to 30 mg L(-1), with a limit of detection of 1 mg L(-1). The method was validated by comparing the results with those obtained by HPLC. A precision of <5.0% was obtained in all cases and no significant differences were observed (P < 0.05).

No MeSH data available.


Related in: MedlinePlus