| Determination of aromatic amines in food products and composite food packaging bags by capillary electrophoresis coupled with transient isotachophoretic stacking. | |
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MedLine Citation:
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PMID: 19524248 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A capillary electrophoretic method was explored to assay aromatic amines in food samples. With an inline-coupled transient isotachophoretic stacking approach, the method has yielded about 200-fold improvement of sensitivity in UV detection of three primary aromatic amines and melamine. By using K(+) as a leading ion and Tris(+) as a terminating ion, a plug of 10 cm (equivalent to 0.44 microL) sample solution was allowed to introduce into a 60 cm (50 cm effective) capillary for separation, giving limits of detection down to 2.0 x 10(-8)M. Baseline separation was achieved within 10 min, with relative standard deviation of 0.41-0.75% (intra-day) or 1.2-1.5% (inter-day) for migration time and 3.8-4.3% (intra-day) or 5.2-6.7% (inter-day) for peak area. The method was directly applicable to assaying the melamine in powder milk samples, with recovery in between 92.0% and 107.1%. The method could also be applied to the analysis of trace primary aromatic amines migrating from composite food packaging bags after combination of a 10-fold off-line concentration step, with limit of detection down to less than 1 microg/L. By this method, 4,4'-diaminophenylmethane and 2,4-diaminotoluene were thus found in three types of composite food packaging bags. |
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Authors:
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Xiaoyu Wang; Yi Chen |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-06-06 |
Journal Detail:
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Title: Journal of chromatography. A Volume: 1216 ISSN: 1873-3778 ISO Abbreviation: J Chromatogr A Publication Date: 2009 Oct |
Date Detail:
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Created Date: 2009-10-06 Completed Date: 2010-01-15 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9318488 Medline TA: J Chromatogr A Country: Netherlands |
Other Details:
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Languages: eng Pagination: 7324-8 Citation Subset: IM |
Affiliation:
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Laboratory of Analytical Chemistry for Life Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Amines
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analysis* Aniline Compounds / analysis Animal Feed / analysis Animals Animals, Domestic Electrophoresis / methods* Electrophoresis, Capillary / methods* Food Analysis / methods* Food Packaging* Linear Models Milk / chemistry Phenylenediamines / analysis Reproducibility of Results Sensitivity and Specificity Triazines / analysis |
| Chemical | |
Reg. No./Substance:
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0/Amines; 0/Aniline Compounds; 0/Phenylenediamines; 0/Triazines; 101-77-9/4,4'-diaminodiphenylmethane; 108-78-1/melamine; 95-80-7/2,4-diaminotoluene |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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