A new method based on dispersive liquid–liquid microextraction for fat‐soluble vitamin determination in serum by LC–MS/MS

J Li, C Chen, X Sun, Z Hu, C Wu… - Biomedical …, 2023 - Wiley Online Library
A green and inexpensive pretreatment known as dispersive liquid–liquid microextraction
(DLLME) was developed in this assay coupled with the LC–MS/MS method for routine …

Microemulsion electrokinetic chromatography in suppressed electroosmotic flow environment: separation of fat-soluble vitamins

S Pedersen-Bjergaard, Ø Næss, S Moestue… - … of Chromatography A, 2000 - Elsevier
Microemulsion electrokinetic chromatography (MEEKC) was carried out in a pH 2.5
phosphate buffer to effectively suppress the electroosmotic flow (EOF). With 66.6%(w/w) 25 …

Microemulsion thin-layer chromatographic separation of caffeine and paracetamol and their determination in formulated tablet and in spiked urine sample by HPLC

SA Bhawani, HM Albishiri… - Analytical Chemistry …, 2014 - Taylor & Francis
A simple and accurate method was developed for the separation and simultaneous
determination of Caffeine and Paracetamol. The separation was achieved on silica HPTLC …

Nanoemulsion supported microemulsion electrokinetic chromatography coupled with selected preconcentration techniques as an approach for analysis of highly …

M Pieckowski, P Kowalski, I Olędzka… - … of Chromatography A, 2022 - Elsevier
In this paper, an oil-in-water (O/W) nanoemulsion (NE) prepared by water cold dilution of an
O/W microemulsion (ME) was introduced as a sample matrix in microemulsion electrokinetic …

Simultaneous determination of fat-soluble vitamins and carotenoids in human serum using a nanostructured ionic liquid based microextraction method

L Kong, J Wang, Q Gao, X Li, W Zhang, P Wang… - … of Chromatography A, 2022 - Elsevier
The determination of fat-soluble vitamins and carotenoids in human serum provides reliable
information for diagnosing malnutrition and for establishing appropriate intervention …

Fatty acids-based microemulsion liquid chromatographic determination of multiple caffeoylquinic acid isomers and caffeic acid in honeysuckle sample

LH Ye, LJ Du, J Cao - Journal of Pharmaceutical and Biomedical Analysis, 2019 - Elsevier
A green and efficient microemulsion liquid chromatographic (MELC) method using fatty acid
as co-surfactant and electrochemical detection was established and validated for the …

Microemulsions in separation sciences

H Watarai - Journal of Chromatography A, 1997 - Elsevier
Fundamental properties of microemulsions in relation to their utilization in liquid state
separation methods of ionic and non-ionic compounds are briefly reviewed. Discussions are …

Microemulsion liquid chromatographic method for simultaneous separation and determination of five isoflavones in red clover

T Duan, H Ma, Y Dong, F Yang, X Liu - Journal of Liquid …, 2021 - Taylor & Francis
Green and efficient separation methods are gradually being loved, and microemulsion
phase chromatography is used in many fields. This study used a microemulsion liquid …

Cyclodextrin-modified microemulsion electrokinetic chromatography for separation of α-, γ-, δ-tocopherol and α-tocopherol acetate

LC Chang, HT Chang, SW Sun - Journal of Chromatography A, 2006 - Elsevier
Different forms of tocopherols, together with tocotrienols, are collectively named as vitamin
E, and each possesses different degree of medical, biological and physiochemical …

On-line concentration methods for analysis of fat-soluble vitamins by MEKC

Q Liu, L Jia, C Hu - Chromatographia, 2010 - Springer
A micellar electrokinetic chromatography method was developed for the simultaneous
determination of three fat-soluble vitamins with UV detection. Several factors, such as the …