Atmospheric humidity
; Computational fluid dynamics
; Nuclear fuels
; Nuclear power plants
; Wind
; Adsorption kinetics
; Computational fluid dynamics simulations
; Field investigation
; Meteorological factors
; Passive samplers
; Sampling rates
; Stable performance
; Tritiated water vapor
; Water vapor
; tritium oxide
; adsorption
; computational fluid dynamics
; experimental study
; instrumentation
; nuclear power plant
; performance assessment
; relative humidity
; sampling
; turbulent boundary layer
; water vapor
; adsorption kinetics
; air sampler
; Article
; atmospheric moisture
; computational fluid dynamics
; concentration (parameters)
; controlled study
; high temperature
; humidity
; hypobarism
; nuclear power plant
; priority journal
; wind
Scopus学科分类:
Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要:
A new passive sampler was developed for collecting environmental tritiated water vapor. The construction of the sampler was improved according to computational fluid dynamics (CFD) simulations in which the influence on vapor collection by the turbulence inside the sampler was considered. Through changes in temperature from 5��C to 35��C and relative humidity from 45% to 90%, the new sampler revealed stable performance of the sampling rate. Compared with the previous samplers, the new sampler significantly lowered the effect of wind speed. Using the adsorption kinetic curve of the sampler provided in the co-comparison experiments, the quantitative relationship between the mass of adsorbed water and the cumulative absolute humidity exposure was established. Field applications in the vicinity of a nuclear power plant show that the data obtained by the new samplers is consistent with the active measurement. The sampler was preliminarily proven to be reliable and flexible for field investigation of HTO in the atmosphere. � 2017 Elsevier Ltd