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Suitable conditions for liquid-phase microextraction using solidification of a floating drop for extraction of fat-soluble vitamins established using an orthogonal array experimental design
Abstract
A simple, rapid and efficient microextraction method for the extraction and determination of some fat-soluble vitamins (A, D2, D3) in aqueous samples was developed. For the first time orthogonal array designs (OADs) were employed to screen the liquid-phase microextraction (LPME) method in which few microliters of 1-undecanol were delivered to the surface of the aqueous sample and it was agitated for a selected time. Then sample vial was cooled by inserting it into an ice bath for 5 min. The solidified solvent was transferred into a suitable vial and immediately melted. Then, the extract was directly injected into a high-performance liquid chromatography (HPLC) for analysis. Several factors affecting the microextraction efficiency such as sample solution temperature, stirring speed, volume of the organic solvent, ionic strength and extraction time were investigated and screened using an OA16 (4(5)) matrix. Under the best conditions (temperature, 55 degrees C; stirring speed, 1000 rpm; the volume of extracting solvent, 15.0 microL; no salt addition and extraction time, 60 min), detection limits of the method were in the range of 1.0-3.5 microgL(-1). The relative standard deviations (RSDs) to determine the vitamins at microg L(-1) levels by applying the proposed method varied in the range of 5.1-10.7%. Dynamic linear ranges of 5-500 mugL(-1) with good correlation coefficients (0.9984<r(2)<0.9991) were observed. Finally, the study was applied to determine the vitamins in several…
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For the LPME-SFO-HPLC determination of fat-soluble vitamins, the LODs were in the range 1.0-3.5 μg L-1.
“The LODs of the method were in the range of 1.0-3.5 μ g L -1 .”
From Developments in Liquid-phase Microextraction Method Based on Solidification of Floating Organic Drop (2010) · cites this paper as [24]
Sobhi et al. [24] used LPME-SFO-HPLC method for the determination of fat-soluble vitamins in water samples (tap water, mixed juice fruit, and human urine).
“Sobhi et al [24] used LPME-SFO-HPLC method for the determination of fat-soluble vitamins in water samples (tap water, mixed juice fruit, and human urine).”
From Developments in Liquid-phase Microextraction Method Based on Solidification of Floating Organic Drop (2010) · cites this paper as [24]
For the LPME-SFO-HPLC determination of fat-soluble vitamins, the relative standard deviations (RSDs) at μg L-1 levels varied in the range of 5.1%-10.7%.
“The relative standard deviations (RSDs) to determine the vitamins at μ g L -1 levels by applying the proposed method varied in the range of 5.1%-10.7%.”
From Developments in Liquid-phase Microextraction Method Based on Solidification of Floating Organic Drop (2010) · cites this paper as [24]
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Green aspects, developments and perspectives of liquid phase microextraction techniques
Spietelun, A., Marcinkowski, Ł., de la Guardia, M., & Namieśnik, J. (2014) · Talanta · doi:10.1016/j.talanta.2013.10.050 · Cited by 333
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Developments in Liquid-phase Microextraction Method Based on Solidification of Floating Organic Drop
WANG, Y.-Y., ZHAO, G.-Y., CHANG, Q.-Y., ZANG, X.-H., WANG, C., & WANG, Z. (2010) · Chinese Journal of Analytical Chemistry · doi:10.1016/s1872-2040(09)60073-6 · Cited by 31
Metadata
- Authors
- Sobhi, H. R., Yamini, Y., Esrafili, A., & Abadi, R. H. H. B.
- Affiliations
- University of Tehran (IR)
- Tarbiat Modares University (IR)
- Corresponding author
- Yamini, Yadollah
- Venue
- Journal of Chromatography A
- Publisher
- Elsevier BV
- Published
- 2008-07
- Volume
- 1196-1197
- Pages
- 28-32
- ISSN
- 0021-9673 (ISSN-L)
- OpenAlex
- W2025864642
- Cited by
- 77
- References
- 1
- Citations by year
- 2025: 1 · 2024: 4 · 2020: 1 · 2019: 2 · 2018: 2 · 2017: 2 · 2016: 2 · 2015: 5 · 2014: 11 · 2013: 12 · 2012: 8
- FWCI
- 9.08
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Chromatography A (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Analytical Chemistry › Analytical chemistry methods development
- Physical Sciences › Chemistry › Analytical Chemistry › Analytical Chemistry and Chromatography
- Physical Sciences › Chemistry › Analytical Chemistry › Analytical Methods in Pharmaceuticals
- Keywords
- liquid-phase microextraction, fat-soluble vitamins, vitamin A, vitamin D2, vitamin D3, 1-undecanol, orthogonal experimental design, extraction optimization, aqueous sample, urine, tap water, fruit juice
- MeSH terms
- Fats, Chemical Fractionation, Solubility, Vitamins, Reproducibility of Results
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