A Statistical Estimation of Precision in Sampling of Aerosol Particles by the with Monte Carlo Method.

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  • モンテカルロ法によるエアロゾル粒子のサンプリング精度の評価
  • モンテカルロホウ ニ ヨル エアロゾル リュウシ ノ サンプリング セイド ノ ヒョウカ

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Abstract

Concentrations of particles which are collected with a suction nozzle from a space with dispersal particles tend generally to have a scatter. It is important to clarify the statistical properties of this scatter. The statistical properties of particle numbers collected by nozzle were simulated by generating particles in an imaginary two-dimensional space by the Monte Calro method. It was founded that the particle numbers collected from a subject space with dispersed particles obeyed the Poisson process in the case of both random distributions and distributions that were not variable with time. When the distributions of particles in the subject space varied with time, the values of the variances of collected particle numbers tended to be greater than their mean of values. In the simulation based on an assumed mass logarithmic normal distribution of particles in the subject space, the collected mass median diameters were estimated to be smaller with decreasing collected total mass of particles of less than 10μg.

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