EFFECT OF AIR VELOCITY ON INHALATION DOSES DUE TO RADON AND THORON PROGENY IN A TEST CHAMBER

被引：2
|
作者：
Mishra, Rosaline [1 ,2 ]
Prajith, Rama [1 ]
Rout, Rajeswari Pradhan [1 ]
Sriamirullah, Jalaluddin [1 ]
Sapra, Balwinder Kaur [1 ]
机构：
[1] Bhabha Atom Res Ctr, Radiol Phys & Advisory Div, Mumbai 400094, Maharashtra, India
[2] Homi Bhabha Natl Inst, Mumbai, Maharashtra, India
来源：
RADIATION PROTECTION DOSIMETRY | 2020年 / 189卷 / 03期
关键词：
WALL LOSSES; DEPOSITION; AEROSOL; PLATEOUT; REMOVAL;
D O I：
10.1093/rpd/ncaa054
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Inhalation doses due to radon and thoron are predominantly due to the inhalation of progeny of Radon and Thoron. The progeny/decay-products of radon and thoron are particulates unlike their parent gas and exhibit different physical properties like attachment to the aerosols and deposition on different surfaces. All these properties in turn depend on the environmental conditions such as air velocity, aerosol concentration, attachment rate, etc. The role of air velocity on deposition on surfaces decides the progeny particles left in the air for inhalation. Therefore, in the present work, we have studied the effect of air velocity on the inhalation dose due to radon and thoron progeny at the centre of a 0.5-m(3) calibration chamber as well as on all surfaces. Hence, the studies were carried out at different air velocities, and inhalation doses were measured using deposition-based direct radon and thoron progeny sensors.
引用
收藏
页码：401 / 405
页数：5
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