Radon is a colorless gas which produced due to the decomposition of Uranium. It is present in a small amount in the atmosphere as well as in the soil. However at times this enters the buildings and water reservoirs and gets trapped there due to lack of ventilation. Due to this its concentration increases and reaches a deadly level which is hazardous for health causing lung cancer. It further increases the risk of lung cancer in smokers.
The acceptable level of radon gas is 4 picocuries per liter. If the concentration is beyond this level a process called radon mitigation is performed to decrease the traces of radon in closed buildings as well as water reservoirs.Since radon gas is colorless as well as odorless therefore it is really difficult to detect its presence. However to tackle this issue Radon Testing utilized.
Procedure of radon removal:
Testing is an effective way to not only detect the presence of radon but also to find out its exact concentration. Radon testing is a simple procedure that can either be performed by hiring the services of professionals or smaller testing kits can be used by oneself.
Depending on the time frame of the tests there are two major types of radon tests. The short term tests are faster and take around 48 hours to a week to indicate the level of radon in the space. The long term tests take longer to exhibit the results. There results may take 3 months or a year to come but they are more accurate.
Types of testing:
There are two main types of testing namely active testing and passive testing, the details are as follows:
- Active Testing:
While performing active testing a device called CRM or Continuous Radon Monitor is used. This type of testing is extensive and requires professional help. This technique is used for short term radon testing for instance 48 hours. This method of testing is far more accurate as compared to the passive testing and is expensive as well as it requires professional help.
- Passive Testing:
Passive testing is a method that involves the use of simple testing kits available in the market. The most commonly used kit is the activated charcoal kit or an alpha track kit. Both these kits function on the same principle. They contain special strips that are marked when radon particles or alpha particles hit them. These collector strips are then analyzed in the laboratory by professionals who use charged plastic plates to calculate the concentration of radon found in the place. This method is a bit cheaper as compared to active testing and is a long term testing routine that takes a little time to give efficient results.
It is important to perform radon testing not only before the process of radon mitigation but afterwards as well. Performing the testing after the mitigation process as well helps us compare the concentrations of radon before and after the mitigation process hence we can see the impact of the mitigation.