Particle Measurement Protocol
Particle Measurement Protocol - Related Videos
07:47
Experimental Protocol to Investigate Particle Aerosolization of a Product Under Abrasion and Under Environmental Weathering
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2016
In this article, an experimental protocol to investigate particle aerosolization of a product under abrasion and under environmental weathering is presented. Results on the emission of engineered nanomaterials, in the form of aerosols are presented. The specific experimental set-up is described in detail.
14:59
Method for Measurement of Viral Fusion Kinetics at the Single Particle Level
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Cited by 11 •
2009
We present an in vitro, two-color fluorescence assay to visualize the fusion of single virus particles with a fluid target bilayer. By labeling viral particles with fluorophores that differentially stain the viral membrane and its interior, we are able to monitor the kinetics of hemifusion and pore formation.
12:34
Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence
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Cited by 7 •
2016
We use 3D printing to fabricate anisotropic particles in the shapes of jacks, crosses, tetrads, and triads, whose alignments and rotations in turbulent fluid flow can be measured from multiple simultaneous video images.
08:59
Measuring Sub-23 Nanometer Real Driving Particle Number Emissions Using the Portable DownToTen Sampling System
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Cited by 6 •
2020
Presented here is the DownToTen (DTT) portable emission measurement system to assess real driving automotive emissions of sub-23 nm particles.
07:53
Micro-particle Image Velocimetry for Velocity Profile Measurements of Micro Blood Flows
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Cited by 12 •
2013
Micro-particle image velocimetry (μPIV) is used to visualize paired images of micro particles seeded in blood flows which are cross-correlated to give an accurate velocity profile. Shear rate, maximum velocity, velocity profile shape, and flow rate, each of which has clinical applications, can be derived from these measurements.
FAQs
Controlled sampling conditions make particle results more comparable by reducing changes introduced during collection. If conditions vary, measured concentrations or size distributions may reflect the procedure as well as the environment. Standardization therefore strengthens comparisons among studies and helps distinguish genuine environmental differences from variation related to sampling or measurement.
Method selection depends on the particle information the study needs to obtain. An appropriate approach should support measurement of concentration, size distribution, or another relevant physical property. Matching the method to the intended outcome helps ensure that the resulting data address the environmental question rather than producing measurements that cannot be meaningfully compared or interpreted.
Particle concentration indicates how much particulate material is present in a sampled environment, whereas size distribution describes how particle sizes are represented within that material. These measurements capture different physical characteristics and can support different interpretations of particle behavior. Together, they provide a broader basis for evaluating environmental particle conditions than either measurement alone.
Measurement bias can make one sample appear different from another because of the way particles were collected or quantified rather than because of actual environmental variation. A standardized protocol reduces this risk by controlling sampling conditions and using an appropriate measurement method. The resulting comparisons are more useful for evaluating changes in particle levels or properties.
A basic workflow begins by defining the environmental material or setting to be sampled, followed by controlled collection of the particles. The protocol then applies a suitable measurement approach to determine concentration, size distribution, or related physical properties. Consistent handling of these stages supports reliable comparison across samples and studies while limiting contamination and measurement bias.
The same measurement framework can be applied across several environmental media, but the sampled material and relevant particle characteristics differ. Applications include airborne particulate matter, suspended particles in water, and particles contained in soil or sediments. Using controlled conditions and an appropriate method in each setting allows results to support comparison within the environmental context being studied.
Researchers may use the protocol for pollution monitoring, exposure assessment, regulatory evaluation, or investigations of particle transport and accumulation. Its value lies in producing measurements that can be compared across samples and studies. Those measurements help characterize environmental quality and provide evidence for examining how particle presence and movement relate to environmental conditions.
Particle measurements can show the concentration and physical size characteristics of particles present in an environmental sample. When collected consistently, these data support assessments of pollution and environmental quality, as well as studies of how particles move through or accumulate in air, water, soil, or sediments. The results can also inform comparisons used in regulatory evaluation.