Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Common Ion Effect03:24

Common Ion Effect

47.1K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
47.1K
The Sense of Self: Reflected Self-Appraisal and Social Comparison02:57

The Sense of Self: Reflected Self-Appraisal and Social Comparison

56.2K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
56.2K
Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

3.3K
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...
3.3K
Titrimetric Methods: Types and Commonly Used Strategies01:08

Titrimetric Methods: Types and Commonly Used Strategies

2.6K
In chemistry, titrimetric methods are broadly classified into three types: volumetric, gravimetric, and coulometric. Volumetric titrations involve measuring the volume of a titrant of known concentration that is required to react completely with an analyte. In gravimetric titrations, the standard solution reacts with the analyte to form an insoluble precipitate, which is filtered, dried, and weighed. In coulometric titrations, current is applied to an electrochemical reaction until the reaction...
2.6K
Pharmacokinetic Models: Comparison and Selection Criterion01:26

Pharmacokinetic Models: Comparison and Selection Criterion

390
Physiological and compartmental models are valuable tools used in studying biological systems. These models rely on differential equations to maintain mass balance within the system, ensuring an accurate representation of the dynamic processes at play.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
390
Passive Filters01:27

Passive Filters

1.0K
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
1.0K

You might also read

Related Articles

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

Sort by
Same author

Quantifying Cardiac, Respiratory, and Low Frequency Components of CSF Motion From fMRI Inflow Effects.

Magnetic resonance in medicine·2026
Same author

Chemical characterisation and cytotoxic analysis of an electronic cigarette and heated tobacco product compared to a conventional cigarette in human lung cell lines.

Toxicology in vitro : an international journal published in association with BIBRA·2026
Same author

The toxic effects of rapeseed methyl ester and petroleum diesel particulate matter on a BEAS-2B cells.

Inhalation toxicology·2025
Same author

High-throughput screening of estrogen receptor activity in personalized mixtures of persistent organic pollutants detected in the blood of Swedish adults.

Environmental research·2025
Same author

Spectral and stiffness characterization of whole prostate gland to assist superficial cancer detection during radical prostatectomy.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2025
Same author

Temporal changes in per and polyfluoroalkyl substances and their associations with type 2 diabetes.

Scientific reports·2025

Related Experiment Video

Updated: Feb 16, 2026

A New Portable In Vitro Exposure Cassette for Aerosol Sampling
07:01

A New Portable In Vitro Exposure Cassette for Aerosol Sampling

Published on: February 22, 2019

7.7K

Improving the UNC Passive Aerosol Sampler Model Based on Comparison with Commonly Used Aerosol Sampling Methods.

Mariam Shirdel1, Britt M Andersson2, Ingvar A Bergdahl1

  • 1Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.

Annals of Work Exposures and Health
|January 5, 2018
PubMed
Summary

The University of North Carolina (UNC) passive aerosol sampler, when modified with an area factor and high-resolution imaging, accurately measures PM2.5 and PM10 dust in occupational settings. This improved passive sampling method offers a viable alternative to active sampling devices.

More Related Videos

A Method for Generating Pulmonary Neutrophilia Using Aerosolized Lipopolysaccharide
08:33

A Method for Generating Pulmonary Neutrophilia Using Aerosolized Lipopolysaccharide

Published on: December 15, 2014

12.2K
A System to Create Stable Nanoparticle Aerosols from Nanopowders
12:59

A System to Create Stable Nanoparticle Aerosols from Nanopowders

Published on: July 26, 2016

10.0K

Related Experiment Videos

Last Updated: Feb 16, 2026

A New Portable In Vitro Exposure Cassette for Aerosol Sampling
07:01

A New Portable In Vitro Exposure Cassette for Aerosol Sampling

Published on: February 22, 2019

7.7K
A Method for Generating Pulmonary Neutrophilia Using Aerosolized Lipopolysaccharide
08:33

A Method for Generating Pulmonary Neutrophilia Using Aerosolized Lipopolysaccharide

Published on: December 15, 2014

12.2K
A System to Create Stable Nanoparticle Aerosols from Nanopowders
12:59

A System to Create Stable Nanoparticle Aerosols from Nanopowders

Published on: July 26, 2016

10.0K

Area of Science:

  • Environmental Science
  • Occupational Health
  • Aerosol Science

Background:

  • Passive sampling offers a potential alternative to active sampling for dust monitoring in occupational environments.
  • The University of North Carolina (UNC) passive aerosol sampler is a common device, but traditional analysis methods show underestimation for fine particles (PM2.5).

Purpose of the Study:

  • To evaluate and potentially enhance the UNC passive aerosol sampler for stationary dust monitoring in a working environment.
  • To address underestimations of fine particulate matter (PM2.5 and PM10) observed with existing UNC sampler analysis models.

Main Methods:

  • Simultaneous sampling using UNC samplers, cyclones, PM10/PM2.5 impactors, and an aerodynamic particle sizer (APS) over 24 hours in an open-pit mine.
  • Comparison of three UNC sampler quantification models: original (mesh factor), hybrid, and area factor.
  • Assessment of the impact of increased microscopic imaging resolution on particle quantification.

Main Results:

  • Employing the area factor model and higher resolution imaging eliminated underestimation for PM10 and PM2.5 particles.
  • The area factor model demonstrated the lowest deviation compared to impactors and cyclones.
  • Modified UNC sampler showed higher precision than respirable cyclones but lower than impactors, with improved agreement in particle size distribution compared to the APS.

Conclusions:

  • The enhanced UNC sampler, utilizing high resolution and an area-based factor, accurately quantifies PM2.5, PM10, and respirable fractions without underestimation.
  • This improved passive sampling method is suitable for monitoring in windless occupational environments.
  • The UNC sampler with the area factor presents a viable and improved passive sampling strategy for workplace dust assessment.