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Related Concept Videos

Sample Preparation for Analysis: Overview01:21

Sample Preparation for Analysis: Overview

Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
Size-Exclusion Chromatography01:08

Size-Exclusion Chromatography

In size-exclusion chromatography (SEC), also known as molecular-exclusion or gel-permeation chromatography, molecules are separated based on their sizes. This technique is important for separating large molecules such as polymers and biomolecules. The two classes of micron-sized stationary phases encountered in SEC are silica particles and cross-linked polymer resin beads. Both materials are porous, but their pore sizes vary significantly.
Silica particles offer advantages such as rigidity,...
Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Analyte Adsorption and Distribution01:09

Analyte Adsorption and Distribution

In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and solvents...
High-Performance Liquid Chromatography: Introduction01:11

High-Performance Liquid Chromatography: Introduction

High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...

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Current developments and future trends in solid-phase microextraction techniques for pharmaceutical and biomedical

Hiroyuki Kataoka1

  • 1School of Pharmacy, Shujitsu University, 1-6-1 Nishigawara, Naka, Okayama 703-8516, Japan. hkataoka@shujitsu.ac.jp

Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry
|September 13, 2011
PubMed
Summary
This summary is machine-generated.

Solid-phase microextraction (SPME) simplifies sample preparation for trace component analysis. This review highlights innovative SPME techniques and their future trends in pharmaceutical and biomedical applications.

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Area of Science:

  • Analytical Chemistry
  • Separation Science
  • Biomedical Analysis

Background:

  • Sample preparation is critical for accurate trace component analysis but is often labor-intensive and prone to errors.
  • Microextraction techniques and microdevices offer efficient integration of sample preparation with analytical instruments.
  • Solid-phase microextraction (SPME) provides a simple, effective method for miniaturization, automation, and high-throughput analysis, reducing time and costs.

Purpose of the Study:

  • To review current developments and future trends in novel Solid-phase microextraction (SPME) techniques.
  • To focus on innovative SPME approaches for pharmaceutical and biomedical analysis.
  • To highlight the advantages of SPME, including reduced analysis times and costs.

Main Methods:

  • Review of current literature on Solid-phase microextraction (SPME) techniques.
  • Discussion of fiber SPME, in-tube SPME, and related microextraction methods.
  • Exploration of innovative applications such as multi-well sampling, pharmacokinetic studies, in vivo sampling, microfluidic systems, and novel materials.

Main Results:

  • Solid-phase microextraction (SPME) enables miniaturization, automation, and high-throughput analysis.
  • SPME significantly reduces analysis times, solvent consumption, and disposal costs.
  • Novel SPME approaches are emerging for advanced applications in various fields.

Conclusions:

  • Solid-phase microextraction (SPME) is a powerful tool for efficient sample preparation in analytical chemistry.
  • Innovative SPME techniques are expanding its utility in complex matrices and demanding applications.
  • Future trends point towards integrated, automated, and highly sensitive SPME systems for pharmaceutical and biomedical analysis.