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Extraction: Advanced Methods

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...

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Related Experiment Video

Updated: Jul 19, 2025

Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis

Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis

Published on: July 1, 2017

A Complete Guide to Extraction Methods of Microplastics from Complex Environmental Matrices.

Monika Rani¹, Serena Ducoli¹, Laura Eleonora Depero¹

¹Department of Mechanical and Industrial Engineering, University of Brescia and INSTM Research Unit of Brescia, 25123 Brescia, Italy.

Molecules (Basel, Switzerland)

|August 12, 2023

Summary

Microplastics (MPs) are a growing global concern, polluting ecosystems worldwide. This review evaluates MP extraction methods from environmental samples, offering a roadmap to combat plastic pollution.

Keywords:

complex environmental matrices emerging contaminants extraction methods microplastics

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Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis

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Separation and Identification of Conventional Microplastics from Farmland Soils

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Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Published on: July 28, 2018

Area of Science:

Environmental Chemistry
Ecotoxicology
Analytical Chemistry

Background:

Microplastics (MPs) are emerging contaminants posing significant risks to global ecosystems.
Aquatic environments act as primary sinks for microplastic pollution.
Effective extraction of MPs from diverse environmental matrices is crucial for accurate assessment.

Purpose of the Study:

To review and evaluate existing and novel methods for microplastic extraction from biotic and abiotic environmental samples.
To identify challenges and propose future research directions for microplastic analysis.
To provide a roadmap to guide researchers in selecting appropriate analytical techniques for microplastic extraction.

Main Methods:

Comprehensive review of published literature on microplastic extraction methodologies.
Evaluation of techniques based on simplicity, speed, cost, sensitivity, and selectivity.
Analysis of methods applicable to various environmental matrices, including water, soil, and biota.

Main Results:

Discussion of a wide range of microplastic extraction techniques, from traditional to innovative.
Assessment of the strengths and limitations of each method for different sample types.
Identification of key challenges in achieving efficient and accurate microplastic recovery.

Conclusions:

Accurate microplastic extraction is vital for understanding pollution impacts and developing mitigation strategies.
Further research is needed to refine and standardize microplastic analytical methods.
A structured approach, like the proposed roadmap, can improve the reliability of microplastic research.