Progress in Sample Pretreatment for Analysis of Estrogens with Liquid Chromatography-Mass Spectrometry

Yan, Wei; Lin, Jin‐Ming

doi:10.1016/s1872-2040(09)60038-4

Cited by 6 publications

(1 citation statement)

References 75 publications

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“…5,6 Chromatographic methods, pri-marily high-performance liquid chromatography, are the most commonly used for the quantification of estrogens owing to their high sensitivity. 7,8 Still, sample pretreatment remains a crucial step in the analysis of estrogens because of their low concentrations and complex character of the samples. 9 Dispersive liquid-liquid microextraction (DLLME) was introduced in 2006 10 as a fast and straightforward sample preparation technique offering high preconcentration factors and recoveries.…”

Section: Introductionmentioning

confidence: 99%

Thin-Layer Chromatography: an Efficient Technique for the Optimization of Dispersive Liquid-Liquid Microextraction

Kupcová

Reiffová

Bazeľ

2018

ACSi

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Thin-layer chromatography (TLC) is an often omitted analytical technique due to its lower sensitivity and separation capacity. Even in the era of high-performance liquid chromatography (HPLC), thin-layer chromatography still offers many advantages, such as simplicity, rapidity, and cost-effectiveness, which predict TLC to be the first-choice method for the laborious optimization process requiring analysis of numerous samples. In this work, a thin-layer chromatography method with chemical and densitometric detection was used to optimize a dispersive liquid-liquid microextraction (DLLME) process for the extraction and preconcentration of estradiol in human urine. The chromatographic system consisted of silica gel plates as the stationary phase and toluene-ethanol (9:1; v/v) mixture as the developing solvent. The plates were dyed with 10% phosphomolybdic acid reagent and sequentially evaluated densitometrically at λ = 430 nm. In the context of DLLME optimization, parameters including the type and volume of extraction and dispersive solvents, centrifugation, salt addition and extraction time, were studied. The proposed DLLME-TLC method was successfully applied to the determination of estradiol in real human urine samples.

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Section: Introductionmentioning

confidence: 99%

Thin-Layer Chromatography: an Efficient Technique for the Optimization of Dispersive Liquid-Liquid Microextraction

Kupcová

Reiffová

Bazeľ

2018

ACSi

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Secondary growth synthesis of covalent organic framework modified electrospun nanofibers for extraction of estrogens in milk samples

Yang

Zhao

et al. 2023

Journal of Food Composition and Analysis

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Simultaneous Determination of Steroid Endocrine Disrupting Chemicals in Water by Solid Phase Extraction-Derivatization- Gas Chromatographic-Mass Spectrometry

Huang

Pan

Wan

et al. 2011

Chinese Journal of Analytical Chemistry

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Progress in Sample Pretreatment for Analysis of Estrogens with Liquid Chromatography-Mass Spectrometry

Abstract: Abstract:In this review, with 77 references cited, two sections are mainly discussed. One is about the various aspects of estrogens in environmental waters. The other is the introduction of current sample pretreatment methods for analyzing estrogens and their applications in recent years.

Cited by 6 publications

References 75 publications

Thin-Layer Chromatography: an Efficient Technique for the Optimization of Dispersive Liquid-Liquid Microextraction

Thin-Layer Chromatography: an Efficient Technique for the Optimization of Dispersive Liquid-Liquid Microextraction

Secondary growth synthesis of covalent organic framework modified electrospun nanofibers for extraction of estrogens in milk samples

Simultaneous Determination of Steroid Endocrine Disrupting Chemicals in Water by Solid Phase Extraction-Derivatization- Gas Chromatographic-Mass Spectrometry

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