Electrical conductivity of air related to ion pair production rate from radon and its progeny concentrations in dwellings of Mysore city

نویسندگان

  • M S Chandrashekara
  • J Sannappa
  • L Paramesh
چکیده

Radon gases released from the ground surface and building materials are the major sources of ionization in the indoor atmosphere. Radon will undergo radioactive decay in the atmosphere by emitting an alpha particle. The alpha and beta particles, and the gama rays from Rn, Rn and their decay products give up their energy by ionizing the molecules and aerosol particles in the atmosphere. Radon and its progeny concentrations and the electrical conductivity of air due to both polarities were measured simultaneously at a height of 1 m from the floor inside dwellings of Mysore city, India. Diurnal variations of radon and its progeny concentrations show their peak values in the early morning (0200 to 0600 hrs) throughout the year. Observations show an increase in the concentration of radon and its progeny during night time compared to the daytime values. The electrical conductivity of the atmospheric air also exhibits similar trend. These results are discussed in terms of ionization rate due to radioactivity and the influence of meteorological parameters on radon and its progeny concentrations.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Measurement of inhalation dose due to radon and its progeny in an oil refinery and its dwellings .

Background: Radon, an invisible, odorless, heaviest (nine times heavier than air) and radioactive gas is an aberration (the only gas in the long decay chain of heavy metal elements). It is ubiquitously present in dwellings and in the environment. Humans receive the greatest radiation dose in their homes. That's where they spend most time - typically 70%, more for small children. Recent worldwid...

متن کامل

A study on radon and thoron progeny levels in dwellings in South India

Background: Decay products of radon and thoron present in indoor environment are the most important sources of radiation from natural sources which affect human beings, since general public spend at lest 80% of their time in indoor. Materials and Methods: Air samples were collected for measuring the concentration of radon and thoron daughter products from various indoor environments d...

متن کامل

Diurnal and Seasonal Variations of Radioactivity and Electrical Conductivity near the Surface for a Continental Location Mysore

Simultaneous measurements of the activity concentrations of radon and its progeny, and conductivity of both polarities were made at a height of 1m above the ground at Mysore (12 N, 76 E, 767 m above mean sea level), India. Diurnal and seasonal variations of activities of radon and its progeny show their peak values in the early morning hours throughout the year. Observations show an increase in...

متن کامل

Seasonal variation of radon, thoron and their progeny levels in dwellings of Haryana and Western Uttar Pradesh

Background: Radon and thoron are invisible, odorless, heavy and radioactive gases which are ubiquitously present in dwellings and in the environment. In the present work, seasonal variation of indoor radon, thoron and their progeny concentrations has been studied in the dwellings of industrially polluted cities in District Faridabad, Haryana and District Mathura in Uttar Pradesh. Materials and ...

متن کامل

Radon level in dwellings basement of Yazd-Iran

Background: Indoor radon gas (222Rn) has been recognized as one of the health hazards for human. Air radon comes mainly from basement soil and construction materials. Saghand region with rich uranium mines lies 180 km from Yazd, so the indoor radon concentration can be high. Yazd, with population of about 457000, is the biggest city near Saghand, thus, indoor gamma background radiation of Yazd ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010