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Related Concept Videos

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
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,...
Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
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...

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Updated: May 28, 2026

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
09:42

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples

Published on: August 7, 2016

Biosorption: a new rise for elemental solid phase extraction methods.

Pablo H Pacheco1, Raúl A Gil, Soledad E Cerutti

  • 1Instituto de Química de San Luis (CCT-San Luis) - Área de Química Analítica, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Laboratorio de Espectrometría de Masas, Bloque III, Ejército de los Andes 950, San Luis, CP5700, Argentina.

Talanta
|October 4, 2011
PubMed
Summary
This summary is machine-generated.

Biosorption, utilizing immobilized microorganisms, offers a selective method for removing heavy metals. This review explores its application in analytical chemistry and solid phase extraction since 2000.

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Biotechnology

Background:

  • Biosorption involves passive binding of heavy metals to biomass.
  • Microorganisms like bacteria, yeast, algae, and fungi are used as biosorbents.
  • Functional groups on microbial surfaces provide selectivity and specificity.

Purpose of the Study:

  • To review the use of biosorption processes as analytical tools since 2000.
  • To explore biosorption's role in improving instrumental analysis.
  • To survey the immobilization of amino acids and peptides for solid phase extraction.

Main Methods:

  • Review of research published since 2000 on biosorption in analytical applications.
  • Analysis of studies employing immobilized microorganisms and biomolecules.
  • Investigation of solid phase extraction systems utilizing biosorbents.

Main Results:

  • Biosorption offers selectivity and specificity for metal ion removal.
  • Immobilized microorganisms and biomolecules are effective in solid phase extraction.
  • Biosorption enhances analytical methodologies for metal detection.

Conclusions:

  • Biosorption is a valuable technique for analytical chemistry, particularly in solid phase extraction.
  • The use of immobilized microorganisms and biomolecules in biosorption is a growing field.
  • Further research can optimize biosorption for advanced instrumental analysis.