+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Optical Sizing of Ultrafine Metallic Particles: Retrieval of Particle Size Distribution from Spectral Extinction Measurements



Optical Sizing of Ultrafine Metallic Particles: Retrieval of Particle Size Distribution from Spectral Extinction Measurements



Journal of Colloid and Interface Science 208(1): 137-146



The inverse problem of optical sizing of ultrafine metallic particles from the spectral extinction measurements in the visible range is investigated. Solving the inverse problem becomes possible due to the strong size effect which in the framework of classical electrodynamics can be described by the dependence of complex refractive index on the particle size. It is shown that the size effect leads to the considerable increase of information content of spectral extinction data with respect to desired size composition of the particles. This makes it possible to retrieve the size distribution of ultrafine metallic particles with reasonably high accuracy, including the Rayleigh size region. The analysis is performed mainly within the framework of numerical tests by the typical example of ultrafine silver particles in a gelatin matrix. The results in retrieving of size distribution from experimentally measured extinction spectra are also presented. Calculations of spectral extinction coefficient are made by means of Mie theory. In so doing, the dielectric function of particles is modified by using the electron's mean free path limitation model. Copyright 1998 Academic Press.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 046870956

Download citation: RISBibTeXText

PMID: 9820757

DOI: 10.1006/jcis.1998.5758


Related references

Generalized eikonal approximation for fast retrieval of particle size distribution in spectral extinction technique. Applied Optics 51(15): 2997-3005, 2012

Determination of particle size distribution in urban hazes from spectral extinction measurements. Applied Optics 20(16): 2767-2769, 1981

Ultrafine particle number concentration and size distribution of vehicle exhaust ultrafine particles. Huan Jing Ke Xue= Huanjing Kexue 35(9): 3309-3314, 2014

Instrument for long-path spectral extinction measurements in air: application to sizing of airborne particles. Applied Optics 40(24): 4261-4274, 2001

Multi-Spectral Extinction Measurements to Deduce the Complex Refractive Index and the Size Distribution of Aerosol Particles. Journal of the Atmospheric Sciences 31(8): 2233-2236, 1974

Airborne ultrafine particles in a naturally ventilated metro station: Dominant sources and mixing state determined by particle size distribution and volatility measurements. Environmental Pollution 239: 82-94, 2018

Airborne ultrafine particles in a naturally ventilated metro station: Dominant sources and mixing state determined by particle size distribution and volatility measurements. Environmental Pollution 239: 82-94, 2018

Composition of Metallic Elements and Size Distribution of Fine and Ultrafine Particles in a Steelmaking Factory. International Journal of Environmental Research and Public Health 15(6):, 2018

Determination of the particle size range in the visible spectrum from spectral extinction measurements. Measurement Science and Technology 18(11): 3572-3582, 2007

Measurements of ultrafine particle concentration and size distribution in the urban atmosphere. Science of the Total Environment 235(1-3): 51-64, 1999

Measurements of ultrafine particle concentrations and size distribution in an iron foundry. Journal of Hazardous Materials 158(1): 124-130, 2008

Metrological assessment of a portable analyzer for monitoring the particle size distribution of ultrafine particles. Annals of Occupational Hygiene 58(7): 860-876, 2014

Ultrafine particle number concentration and size distribution measurements in a street canyon. Huan Jing Ke Xue= Huanjing Kexue 28(4): 695-700, 2007

Determination of the size distribution of metallic nanoparticles by optical extinction spectroscopy. Applied Optics 48(3): 566-572, 2009

Measurements of hygroscopicity and volatility of atmospheric ultrafine particles during ultrafine particle formation events at urban, industrial, and coastal sites. Environmental Science and Technology 43(17): 6710-6716, 2009