4.6 Article

A comprehensive theory for vacuum-assisted headspace extraction of solid samples

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Chemistry, Analytical

Vacuum-assisted headspace thin-film microextraction: Theoretical formulation and method optimization for the extraction of polycyclic aromatic hydrocarbons from water samples

Evangelia Yiantzi et al.

Summary: This study introduces a new method - vacuum-assisted HS-TFME, which accelerates the extraction equilibrium kinetics by utilizing vacuum conditions. Results show that under vacuum conditions, the overall extraction kinetics process is substantially accelerated, achieving sample equilibrium in a short period of time.

ANALYTICA CHIMICA ACTA (2022)

Article Chemistry, Analytical

Sub-ambient temperature sampling of fish volatiles using vacuum-assisted headspace solid phase microextraction: Theoretical considerations and proof of concept

Nathalie Delbecque et al.

Summary: Vacuum headspace solid-phase microextraction (Vac-HS-SPME) sampling at sub-ambient temperatures (5 degrees C) has shown significant improvement in extraction efficiencies for volatile compounds in perishable food samples, especially fish. This new method has great potential for future applications in quality control and freshness assessment.

ANALYTICA CHIMICA ACTA (2022)

Article Energy & Fuels

Modeling of natural gas self-diffusion in the micro-pores of organic-rich shales coupling sorption and geomechanical effects

Clement Afagwu et al.

Summary: This study evaluates the self-diffusion behavior during the depletion of shale reservoirs through molecular simulation and proposes a transition diffusion model sensitive to changes in pore pressure and stress. The model is compared and validated against similar work in the literature, and the results show decent predictive ability. The implications of structure tortuosity, sorption profile, and pore pressure on diffusion coefficient and gas desorption are discussed. This work provides a novel methodology for studying methane transport in realistic kerogen geometry and has implications for accurate reservoir simulation and assessment.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2022)

Article Chemistry, Multidisciplinary

Optimization of headspace solid-phase microextraction of volatile organic compounds from dry soil samples by porous coatings using COMSOL Multiphysics

B. N. Kenessov et al.

Summary: Headspace solid-phase microextraction (HSSPME) is a simple and cost-effective method for preparing soil samples for the determination of volatile organic compounds (VOCs). This study developed a numerical optimization model using COMSOL Multiphysics (CMP) to optimize the extraction process. The model considered the effect of sample mass, pressure, fiber-headspace and soil-headspace distribution constants on extraction profiles and equilibrium time. The results showed that equilibrium extraction time was significantly shorter under vacuum conditions, and pre-incubation time could be optimized based on sample mass and soil-headspace distribution constant.

CHEMICAL BULLETIN OF KAZAKH NATIONAL UNIVERSITY (2022)

Article Chemistry, Physical

Assessing the contribution of micropores and mesopores from nitrogen adsorption on nanoporous carbons: Application to pore size analysis

Jerzy Choma et al.

Summary: Adsorption isotherms in micropores and mesopores are evaluated using nitrogen adsorption isotherm on micro-mesoporous carbons to determine pore size distributions. Selection of appropriate templates and activation methods can lead to carbons with ordered mesopores and increased microporosity.

CARBON (2021)

Article Chemistry, Physical

Isosteric heat of adsorption from thermodynamic Langmuir isotherm

Hla Tun et al.

Summary: The thermodynamic Langmuir isotherm model is effectively utilized to estimate the isosteric heat of adsorption for pure component adsorption, demonstrating accurate results in correlating surface loading and isosteric heat.

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY (2021)

Article Chemistry, Medicinal

Modeling the Tablet Disintegration Process Using the Finite Difference Method

Chi So et al.

Summary: The study introduces the finite difference method (FDM) and its application in modeling mass transport processes with a focus on diffusion processes. It demonstrates the effectiveness of FDM in simulating tablet disintegration behaviors by providing spatial-temporal information on water uptake and evolution of tablet size and shape during the process. The study highlights the unique advantage of FDM and its potential for more in-depth tablet disintegration studies and incorporation in tablet formulation DoE studies.

JOURNAL OF PHARMACEUTICAL SCIENCES (2021)

Article Chemistry, Analytical

Fabrication and evaluation of a portable low-pressure headspace solid-phase microextraction device for on-site analysis

Ahmadreza Derikvand et al.

Summary: The LP-HS-SPME device is compact, simple, and reliable for on-site sampling of volatile and semivolatile environmental organic pollutants. It is pocket-sized, user-friendly, and suitable for direct sampling of analytes from complex liquid and solid matrices. Coupled with the NODS/PVA coated fiber, it is effective for the extraction and analysis of PAHs in solid samples.

MICROCHEMICAL JOURNAL (2021)

Review Engineering, Environmental

Guidelines for the use and interpretation of adsorption isotherm models: A review

Mohammad A. Al-Ghouti et al.

JOURNAL OF HAZARDOUS MATERIALS (2020)

Review Energy & Fuels

Review of Shale Gas Sorption and Its Models

Yun Yang et al.

ENERGY & FUELS (2020)

Article Chemistry, Multidisciplinary

Langmuir's Theory of Adsorption: A Centennial Review

Hans Swenson et al.

LANGMUIR (2019)

Article Chemistry, Analytical

Vacuum-assisted headspace single-drop microextraction: Eliminating interfacial gas-phase limitations

Elefteria Psillakis et al.

ANALYTICA CHIMICA ACTA (2019)

Article Chemistry, Multidisciplinary

Ultrasensitive direct determination of BTEX in polluted soils using a simple and novel pressure-controlled solid-phase microextraction setup

Alireza Ghiasvand et al.

JOURNAL OF THE IRANIAN CHEMICAL SOCIETY (2018)

Article Chemistry, Analytical

Magnetic ionic liquids as extraction solvents in vacuum headspace single-drop microextraction

Maria J. Trujillo-Rodriguez et al.

TALANTA (2017)

Article Chemistry, Analytical

Amino-silica/graphene oxide nanocomposite coated cotton as an efficient sorbent for needle trap device

Nahid Heidari et al.

ANALYTICA CHIMICA ACTA (2017)

Review Chemistry, Analytical

Cooling-assisted microextraction: Comparison of techniques and applications

Ali Reza Ghiasvand et al.

TRAC-TRENDS IN ANALYTICAL CHEMISTRY (2016)

Article Chemistry, Analytical

Vacuum-assisted headspace solid phase microextraction of polycyclic aromatic hydrocarbons in solid samples

Evangelia Yiantzi et al.

ANALYTICA CHIMICA ACTA (2015)

Article Energy & Fuels

A mathematical model for drainage and desorption area analysis during shale gas production

Jin Zhang et al.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2014)

Article Engineering, Environmental

Biodegradation of Naphthalene, Benzene, Toluene, Ethyl Benzene, and Xylene in Batch and Membrane Bioreactors

Liang Li et al.

ENVIRONMENTAL ENGINEERING SCIENCE (2012)

Article Physics, Multidisciplinary

Understanding diffusion in nanoporous materials

E Beerdsen et al.

PHYSICAL REVIEW LETTERS (2006)

Article Environmental Sciences

Passive air sampling theory for semivolatile organic compounds

ME Bartkow et al.

CHEMOSPHERE (2005)

Article Engineering, Environmental

Volatilization characteristics of organic compounds in the coagulation process

HP Chao et al.

JOURNAL OF ENVIRONMENTAL ENGINEERING (2005)

Article Chemistry, Applied

The competitive sorption of CO2 and CH4 with regard to the release of methane from coal

G Ceglarska-Stefanska et al.

FUEL PROCESSING TECHNOLOGY (2002)

Article Chemistry, Physical

Adsorption - from theory to practice

A Dabrowski

ADVANCES IN COLLOID AND INTERFACE SCIENCE (2001)