Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Colloids

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...

Colloids and Suspensions

Colloids and Suspensions

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...

Colloidal precipitates

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...

What is Behavior?

What is Behavior?

Behaviors are actions that an organism engages in—they can be related to finding food, reproducing, defending against threats, and many other possible actions. Behaviors include activities related to the environment around the animal—such as migration—as well as social interactions within a species or population. Many behaviors involve motor output—that is, muscle movements—while others involve less visible actions, such as learning.

Aggregates Classification

Aggregates Classification

Aggregate classification is generally based on its size, petrographic characteristics, weight, and source. Size classification ranges from coarse to fine aggregates, defined by the size of the particles. Coarse aggregates are particles that do not pass through ASTM sieve No. 4, and aggregates that pass through the sieve are fine aggregates.
Petrographic classification groups aggregates based on common mineralogical characteristics. Some of the common mineral groups found in aggregates are...

Cancers Originate from Somatic Mutations in a Single Cell

Cancers Originate from Somatic Mutations in a Single Cell

Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Effects of N-carbamylglutamate on down yield and quality and thyroid transcriptome in breeding Huoyan geese.

Poultry science·2026

Same author

Making Waves: Bridging the scale gap in aquatic phosphorus cycling.

Water research·2026

Same author

Hydrological impacts on denitrification and nirS- and nirK- microbial community shifts in floodplains: Insights from water recession and flooding periods.

Journal of environmental sciences (China)·2026

Same author

Biofilm-Derived Disinfection Byproducts in Water Distribution: Precursor Roles and Toxicity under Various Disinfection Methods.

Environmental science & technology·2026

Same author

Isotope-Labeling Inspired Lattice-Inherited Rhenium Single-Atom Regulating Local Electronic Microenvironment of Dual-Phase MoS<sub>2</sub>/MoP Nanotubes for Accelerated Sulfur Redox Kinetics.

Advanced materials (Deerfield Beach, Fla.)·2026

Same author

Metatranscriptomics-based investigation of bacterial community dynamics across a dissolved organic matter gradient in southern Lake Michigan.

Applied and environmental microbiology·2026

Search research articles

Related Experiment Video

Updated: Feb 9, 2026

Synthesis and Characterization of Supramolecular Colloids

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Characterization, origin and aggregation behavior of colloids in eutrophic shallow lake.

Huacheng Xu¹, Mengwen Xu², Yani Li³

¹State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.

|June 8, 2018

Summary

Aquatic colloidal particles, originating from sediment re-suspension, impact water quality. Electrolytes and natural organic matter influence their aggregation, with implications for pollutant transport in shallow lakes.

Keywords:

Aggregation behavior Aquatic colloids Eutrophic shallow lakes Molecular size fractionation Natural organic matter

More Related Videos

Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids

Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids

Published on: March 21, 2025

Tangential Flow Ultrafiltration: A “Green” Method for the Size Selection and Concentration of Colloidal Silver Nanoparticles

Tangential Flow Ultrafiltration: A “Green” Method for the Size Selection and Concentration of Colloidal Silver Nanoparticles

Published on: October 4, 2012

Related Experiment Videos

Last Updated: Feb 9, 2026

Synthesis and Characterization of Supramolecular Colloids

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids

Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids

Published on: March 21, 2025

Tangential Flow Ultrafiltration: A “Green” Method for the Size Selection and Concentration of Colloidal Silver Nanoparticles

Tangential Flow Ultrafiltration: A “Green” Method for the Size Selection and Concentration of Colloidal Silver Nanoparticles

Published on: October 4, 2012

Area of Science:

Environmental Science
Geochemistry
Limnology

Background:

Colloidal particle stability is a key factor in water column turbidity, affecting aquatic ecosystem health, particularly in shallow lakes.
Understanding the characteristics and behavior of aquatic colloids is crucial for managing water quality.

Purpose of the Study:

To characterize natural colloidal particles (NCPs) and total inorganic colloidal particles (TICPs) in a turbid shallow lake.
To investigate the origin and aggregation behavior of these aquatic colloids.
To assess the influence of electrolytes and natural organic matter (NOM) on colloidal stability.

Main Methods:

Field observations and simulation experiments in Lake Taihu.
Ultrafiltration, spectral, microscopic, and light scattering techniques for particle characterization.
Analysis of colloidal particle size, shape, and mineralogical composition.

Main Results:

Colloidal particles ranged from 20-200 nm with diverse shapes and mineral compositions (Al, Si, Fe).
Sediment re-suspension was a major source, contributing 78-80% of TICPs and 54-55% of NCPs.
Electrolytes promoted aggregation, while NOM, particularly high molecular weight fractions, enhanced stability; NCPs showed less MW-dependent behavior than TICPs.

Conclusions:

Sediment re-suspension is a primary driver of colloidal presence in shallow lakes.
NOM's molecular weight significantly influences colloidal stability, with higher MW fractions offering greater stabilization.
Existing models of colloidal behavior may need reevaluation due to differences between NCPs and TICPs, necessitating further research on colloid fate and pollutant transport.