Analysis of the spatial distribution and comparison of the levels of radiofrequency pollution in Sri Lanka's two most populous cities

Abstract

Overview

In the modern era, wireless communication is crucial, especially highlighted during pandemic conditions. Despite their widespread utility, it is vital to understand that prolonged exposure to radiofrequency (RF) waves can pose significant health risks.

Objective

The study focuses on evaluating the spatial distribution and levels of RF radiation across various frequency bands such as GSM900, GSM1800, UMTS, LTE2.6, and WLan2.4 in Colombo and Kandy, the major cities in Sri Lanka.

Methodology

• Radiation levels measured using a SPECTRAN HF6065 spectrum analyzer coupled with an HL7060 directional antenna.
• A total of 98 survey points across both cities, focusing on public locations.

Findings

Analysis indicates that RF radiation concentration in Colombo is over 50% higher compared to Kandy, with notable hotspots particularly in the LTE2.6 and GSM900 frequency bands.

Conclusion

This detailed evaluation showcases the city-wide variance in radiofrequency pollution, with Colombo facing significantly higher levels of RF exposure. Although the current levels are within international safety limits, continuous monitoring and further research on the non-thermal effects of RF exposure are recommended.