Recent developments and applications in the microextraction and separation technology of harmful substances in a complex matrix

Gu, Yu-Xin; Yan, Tian‐Ci; Yue, Zi-Xuan; Liu, Fangming; Cao, Jun; Ye, Lihong

doi:10.1016/j.microc.2022.107241

Cited by 16 publications

(4 citation statements)

References 135 publications

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“…This approach eliminates the need to coat the adsorbent onto a carrier surface, thereby increasing the contact area between the adsorbent and the sample solution, leading to improved extraction efficiency and reduced adsorption time. However, due to the mixing of the sorbent with the sample matrix, the separation process becomes challenging [ 88 , 89 ]. Therefore, magnetically separable magnetic adsorbent materials have attracted significant attention from researchers.…”

Section: Nanoscale Materials For Instrumental Analysis Of Mycotoxinsmentioning

confidence: 99%

Nanoscale Materials Applying for the Detection of Mycotoxins in Foods

Hu,

Li,

Yang

et al. 2023

Foods

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Trace amounts of mycotoxins in food matrices have caused a very serious problem of food safety and have attracted widespread attention. Developing accurate, sensitive, rapid mycotoxin detection and control strategies adapted to the complex matrices of food is crucial for in safeguarding public health. With the continuous development of nanotechnology and materials science, various nanoscale materials have been developed for the purification of complex food matrices or for providing response signals to achieve the accurate and rapid detection of various mycotoxins in food products. This article reviews and summarizes recent research (from 2018 to 2023) on new strategies and methods for the accurate or rapid detection of mold toxins in food samples using nanoscale materials. It places particular emphasis on outlining the characteristics of various nanoscale or nanostructural materials and their roles in the process of detecting mycotoxins. The aim of this paper is to promote the in-depth research and application of various nanoscale or structured materials and to provide guidance and reference for the development of strategies for the detection and control of mycotoxin contamination in complex matrices of food.

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Section: Nanoscale Materials For Instrumental Analysis Of Mycotoxinsmentioning

confidence: 99%

Nanoscale Materials Applying for the Detection of Mycotoxins in Foods

Hu,

Li,

Yang

et al. 2023

Foods

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“…Since its introduction in 1990, solid-phase microextraction (SPME) has presented unique advantages in environmental analysis owing to its sensitivity, simple operation, and solvent-free approach. − Under headspace (HS) SPME mode, extraction of analytes occurs by placing the SPME phase above the sample, thus enabling contactless extraction of volatile and semivolatile analytes from a given sample matrix. , Generally, samples should be heated at a high enough temperature to promote the release of analytes, particularly in analyses of complex matrices. However, the partition coefficient of analytes between the coating and headspace also decreases with increasing temperature, leading to a serious reduction in extraction efficiency .…”

Section: Introductionmentioning

confidence: 99%

Quantitative Determination of Poly(methyl Methacrylate) Micro/Nanoplastics by Cooling-Assisted Solid-Phase Microextraction Coupled to Gas Chromatography–Mass Spectrometry: Theoretical and Experimental Insights

Xu,

Li,

Xiao

et al. 2024

Anal. Chem.

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Determinations of micro/nanoplastics (MNPs) in environmental samples are essential to assess the extent of their presence in the environment and their potential impact on ecosystems and human health. With the aim to provide a sensitive method with simplified pretreatment steps, cooling-assisted solid-phase microextraction (CA-SPME) coupled to gas chromatography−mass spectrometry (GC-MS) is proposed as a new approach to quantify mass concentrations of MNPs in water and soil samples. The herein proposed CA-SPME method offers the unique advantage of integrating the thermal decomposition of MNPs and enrichment of signature compounds into one step. Poly(methyl methacrylate) (PMMA) was used as a model substance to verify the method performance in this work. Theoretical insights demonstrated that pyrolysis is the rate-determining step during the extraction process and that PMMA is effectively decomposed at 350 °C with an estimated incubation time of 13 min. Eight compounds were identified in the pyrolysis products by CA-SPME-GC-MS with the use of a DVB/ CAR/PDMS coating, wherein methyl methacrylate was considered as the best indicator and dimethyl 2-methylenesuccinate was selected as the confirmation compound. Under the optimized conditions, the proposed method exhibited wide linearity (0.5−2000 μg for water and 5−1000 μg for soil) and high sensitivity, with limits of detection of 0.014 and 0.28 μg for water and soil, respectively. Finally, the proposed method was successfully applied for determinations of PMMA MNPs in real water and soil samples with satisfactory recoveries attained. The method only required the employment of a filter membrane for water analysis, while soil samples were analyzed directly without any pretreatment. The solvent-free approach, straightforward operation, and high sensitivity of the proposed method show great potential for the analysis of MNPs in different environmental samples.

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“…Recently, a variety of extraction strategies focused on liquid phase microextraction (LPME) have been developed for the sample's enrichment [20]. A major advantage of these approaches includes a variety of sample preparation techniques aimed at considerably reducing the amount of reagents and solvents [21][22]. Many researchers have highlighted dispersive liquid-liquid microextraction (DLLME) for analytes pre-concentration and extraction for subsequent quantification in food and environmental samples [23][24].…”

Section: ■ Introductionmentioning

confidence: 99%

A Univariate Optimization Strategy for Pre-concentration of Cobalt(II) in Various Matrixes by a DLLME before Analysis Using FAAS

Mehdi,

Alshamkhawy

2024

Indones. J. Chem.

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A procedure based on dispersive liquid-liquid microextraction (DLLME) for cobalt (Co) quantification in an Iraqi environmental matrix by flame atomic absorption spectroscopy (FAAS) was applied in this work. A case-study approach was chosen to obtain further in-depth information on the Co levels and to evaluate the effectiveness of N-salicylideneaniline (SAN) as a complexing agent for pre-concentration and extraction of Co. An univariate strategy was utilized to achieve the optimum extraction conditions. The estimated limits of detection (LOD) and quantification (LOQ) under optimum conditions were 1.04 and 3.47 µg L−1, respectively. The results achieved by the proposed system were compared with those using the microwave digestion/graphite furnace atomic absorption spectrometer (MWD/GF-AAS) for digest samples and also for some water samples (Direct GF-AAS). The proposed procedure was applied for analyzing eleven environmental samples. The detectable Co levels for water samples ranged from 0.72 to 4.30 µg L−1 with a relative standard deviation of 3.7–8.8%, while the concentration for solid samples ranged from 0.17–4.51 µg g−1 (2.4–11.8 RSD %). DLLME/FAAS proposed procedure is effective, simple, and has the benefit of minimizing the organic solvent consumption by a few microliters, which results in little waste.

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Recent developments and applications in the microextraction and separation technology of harmful substances in a complex matrix

Cited by 16 publications

References 135 publications

Nanoscale Materials Applying for the Detection of Mycotoxins in Foods

Nanoscale Materials Applying for the Detection of Mycotoxins in Foods

Quantitative Determination of Poly(methyl Methacrylate) Micro/Nanoplastics by Cooling-Assisted Solid-Phase Microextraction Coupled to Gas Chromatography–Mass Spectrometry: Theoretical and Experimental Insights

A Univariate Optimization Strategy for Pre-concentration of Cobalt(II) in Various Matrixes by a DLLME before Analysis Using FAAS

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