Single particle diversity and mixing state measurements
نویسندگان
چکیده
منابع مشابه
Quantifying aerosol mixing state with entropy and diversity measures
This paper presents the first quantitative metric for aerosol population mixing state, defined as the distribution of per-particle chemical species composition. This new metric, the mixing state index χ , is an affine ratio of the average per-particle species diversity Dα and the bulk population species diversity Dγ , both of which are based on information-theoretic entropy measures. The mixing...
متن کاملOrganics typed by single particle measurements
S. Liu, L. M. Russell, D. T. Sueper, and T. B. Onasch Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, USA Cooperative Institute for Research in Environmental Studies, University of Colorado, Boulder, Colorado, USA Center for Aerosol and Cloud Chemistry, Aerodyne Research Inc., Billerica, Massachusetts, USA Chemistry Department, Boston College, Che...
متن کاملConcentration measurements in single particle microscopy
The topic of this thesis is the introduction of two novel methods for using single particle microscopy as a tool for absolute number concentration measurements of Brownian particles. The key idea of both methods is that in order to estimate number concentration, the size of the (three-dimensional) particle detection region has to be estimated. Typically, this size has until now been estimated b...
متن کاملA microfluidic mixing system for single-molecule measurements.
This article describes the design and fabrication of a microfluidic mixing system optimized for ultrasensitive optical measurements. Channels are replica-molded in polydimethylsiloxane elastomer and sealed with fused-silica coverglass. The resulting devices have broad chemical compatibility and extremely low fluorescence background, enabling measurements of individual molecules under well-chara...
متن کاملInfluence of Particle Location Within Plasma and Focal Volume on Precision of Single-Particle LIBS Measurements
The effect of the location of particles within the plasma volume on the LIBS signal for single-particle measurements is investigated. Three methods of collecting plasma emission are compared to determine the influence of plasma imaging on particle hit detection rates and signal precision. Imaging larger regions of the plasma volume improves particle detection rates. Spatial integration of the s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2014
ISSN: 1680-7324
DOI: 10.5194/acp-14-6289-2014