Dry deposition of atmospheric particles: application of current models to ambient data

Article Abstract:

There is, at present, no accepted method for measuring the dry deposition of contaminants. Researchers at the Illinois Institute of Technology contributed to knowledge in this area by showing that the mass flux of particle contaminants is a function of particle size, or mass-flux size distribution. Large particles play a significant role in dry deposition flux because of their deposition velocities. Current models routinely underestimate dry deposition flux because they underestimate the role played by large particles.

Testing laboratories, Environmental aspects, Sedimentation and deposition, Deposition (Geology)

---

Comparison of dry deposition predicted from models and measured with a water surface sampler

Article Abstract:

A circular water surface sampler was developed to measure the dry atmospheric deposition of gases and particles, which may provide insights into the fate of airborne toxics and their partitioning from air to natural surfaces. Measurements of sulfate flux using the sampler, which is made of a sharp-edged, acrylic plate, filled and continuedly replenished with a constant amount of water, were consistent with those predicted with empirical and resistance models.

Research and Development in the Physical, Engineering, and Life Sciences, Pollution Control R&D, Innovations, Measuring instruments, Pollution control research

---

Dry deposition and particle size distributions measured during the Lake Michigan urban air toxics study

Article Abstract:

Samples taken during the Lake Michigan urban air toxics study have been compared with modeled dry deposition estimates. Concentrations of 13 trace elements were measured in the Lake Michigan study. The model used atmospheric particle size distribution and deposition velocities to calculate dry deposition flux. Comparisons showed slight variations of flux.

Air pollution control, Air quality management, Toxicity testing, Toxicity tests

Similar abstracts:

• Abstracts: Oxidation kinetics of Fe(II) in a eutrophic Swiss lake. Application of a LRT model to acid rain control in China
• Abstracts: Fading of organic artists' colorants by atmospheric nitric acid: reaction products and mechanisms. Fate of atmospheric particles within the Buddhist cave temples at Yungang, China
• Abstracts: General isotherm nonlinearity and applicability of the dual reactive domain model. Thermodynamically derived relationships between the modified Langmuir isotherm and experimental parameters
• Abstracts: Gas-phase atmospheric chemistry of selected thiocarbamates. Observation of hydroxycarbonyls from the OH radical-initiated reaction of isoprene

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.