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November 27, 2019
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Extraction of aflatoxins by using mesoporous silica (type UVM-7), and their quantitation by HPLC-MS

Publicated to:MICROCHIMICA ACTA. 186 (12): 792- - 2019-12-01 186(12), DOI: 10.1007/s00604-019-3958-8

Authors: Pellicer-Castell E; Belenguer-Sapiña C; Borràs V; Amorós P; El Haskouri J; Herrero-Martínez J; Mauri-Aucejo A

Affiliations

Universidad Autónoma de Madrid - Author
University of Valencia - Author

Abstract

© 2019, Springer-Verlag GmbH Austria, part of Springer Nature. A solid-phase extraction procedure has been developed by using a sorbent derived from UVM-7 mesoporous silica. The sorbent was applied to the extraction of aflatoxins B1, B2, G1 and G2 from tea samples followed by HPLC with mass spectrometric detection. The sorbent was characterized by transmission electron microscopy, nuclear magnetic resonance, X-ray diffraction and nitrogen adsorption-desorption. UVM-7 is found to be the best solid phase. The amount of solid-phase, type and volume of eluent, pH value and ionic strength and breakthrough volume were optimized. Following the recommended procedure, recoveries between 96.0 and 98.2% were achieved, with RSD values of <5.1%, and the limits of detection are in the range from 0.14 to 0.7 μg·kg−1. The material is reusable. The method was applied to the analysis of real tea samples. A low matrix effect is found, and recoveries are >88%. The results were compared with those obtained by immunoaffinity columns as a reference method. Only low concentrations of aflatoxin G2 were found in some samples, and results obtained with both methods are shown to be statistically sound and comparable. [Figure not available: see fulltext.].

Keywords

food analysishierarchical porositymaterialsmycotoxinnanomaterialspreconcentrationsolid-phase extractionB-1CleanupFood analysisHierarchical porosityImmunoaffinity columnMaterialsMedicinal herbsMycotoxinNanomaterialsPerformance liquid-chromatographyPreconcentrationSamplesSolid-phase extractionTea

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal MICROCHIMICA ACTA due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2019, it was in position 9/86, thus managing to position itself as a Q1 (Primer Cuartil), in the category Chemistry, Analytical. Notably, the journal is positioned above the 90th percentile.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.07. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Field Citation Ratio (FCR) from Dimensions: 2.33 (source consulted: Dimensions Aug 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-08-16, the following number of citations:

  • WoS: 19
  • Scopus: 20

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-08-16:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 29.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 29 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 0.25.
  • The number of mentions on the social network X (formerly Twitter): 1 (Altmetric).