Air Sampling
Air Sampling - Related Videos
09:16
Air-sampled Filter Analysis for Endotoxins and DNA Content
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2016
Two complementary analyses of atmospheric biological particles from air sampled filters are described herein: the extraction and detection of endotoxin, and of DNA.
12:02
Collection and Extraction of Occupational Air Samples for Analysis of Fungal DNA
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Cited by 2 •
2018
Determining the fungal diversity within an environment is a method utilized in occupational health studies to identify health hazards. This protocol describes DNA extraction from occupational air samples for amplification and sequencing of fungal ITS regions. This approach detects many fungal species that can be overlooked by traditional assessment methods.
09:26
Quantification and Whole Genome Characterization of SARS-CoV-2 RNA in Wastewater and Air Samples
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Cited by 2 •
2023
This protocol aims to quantify SARS-CoV-2 RNA in wastewater and air samples to be used for wastewater-based epidemiology studies and to assess the exposure risk to SARS-CoV-2 in indoor and outdoor aerosols. This protocol also describes a tiled amplicon long-template sequencing approach for SARS-CoV-2 whole genome characterization.
01:27
Air-entraining Agents
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2024
Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...
07:06
Methods for the Self-integration of Megamolecular Biopolymers on the Drying Air-LC Interface
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Cited by 4 •
2017
A method for the drying-induced self-integration of megamolecular biopolymers on the air-liquid crystalline interface is provided here. This methodology will be useful not only for understanding the macroscopic potentials of biopolymers, but also as an evaluation method for soft materials in biomedical and environmental fields.
FAQs
The collection medium must be suitable for the airborne constituent being investigated. Filters, sorbents, and other collection media provide different ways to retain target pollutants, particulates, microorganisms, or other constituents before analysis. That choice matters because the retained material is what laboratory or field analysis measures, so the medium directly influences whether the target can be quantified reliably.
Calibration connects the pump’s operation with the volume of air actually sampled. Using a known volume allows the amount of a retained constituent to be related to the air examined, producing a concentration rather than an uncontextualized mass. Consistent calibration also supports meaningful comparisons among samples collected at different locations or times.
Air Sampling can expose spatial and temporal variation when measurements are collected across locations or sampling periods. Differences in measured concentrations can indicate where contamination is greater, when levels change, and how patterns relate to possible sources. This makes the method useful for interpreting environmental conditions rather than simply detecting whether a constituent is present.
A basic workflow begins by identifying the constituent of interest and selecting an appropriate collection medium. A calibrated pump then moves a known air volume through that medium so the target is retained. The collected material proceeds to laboratory or field analysis, where the result is used to quantify the constituent and interpret its environmental significance.
Researchers can use air-sampling results to estimate contaminant concentrations in a monitored environment. Depending on the target, analysis may address pollutants, particulates, microorganisms, or other airborne constituents. These measurements provide evidence needed to examine exposure, compare environmental conditions, assess compliance, or determine whether contamination has changed after remediation.
In environmental work, air sampling supports several decisions: assessing potential exposure, checking regulatory compliance, guiding pollution control, and evaluating remediation efforts. Its value comes from linking a measured concentration to a defined air volume and sampling context. That connection lets monitoring data describe contamination levels and patterns relevant to environmental management.