RESIDENTIAL EXPOSURE TO EXTREMELY LOW FREQUENCY ELECTRIC AND MAGNETIC FIELDS IN THE CITY OF RAMALLAH-PALESTINE
| Autor: | Adnan Lahham, Issam Abdelraziq, Falastine Abuasbi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Power frequency
Atmospheric sciences 030218 nuclear medicine & medical imaging 03 medical and health sciences Middle East 0302 clinical medicine Electromagnetic Fields Electric field Humans Radiology Nuclear Medicine and imaging Extremely low frequency Palestine Household Articles Radiation Radiological and Ultrasound Technology Public Health Environmental and Occupational Health General Medicine Environmental Exposure Living room Magnetic field Above ground 030220 oncology & carcinogenesis Housing Environmental science Bedroom Environmental Monitoring |
| Zdroj: | Radiation protection dosimetry. 179(1) |
| ISSN: | 1742-3406 |
| Popis: | This study was focused on the measurement of residential exposure to power frequency (50-Hz) electric and magnetic fields in the city of Ramallah-Palestine. A group of 32 semi-randomly selected residences distributed amongst the city were under investigations of fields variations. Measurements were performed with the Spectrum Analyzer NF-5035 and were carried out at one meter above ground level in the residence's bedroom or living room under both zero and normal-power conditions. Fields' variations were recorded over 6-min and some times over few hours. Electric fields under normal-power use were relatively low; ~59% of residences experienced mean electric fields10 V/m. The highest mean electric field of 66.9 V/m was found at residence R27. However, electric field values were log-normally distributed with geometric mean and geometric standard deviation of 9.6 and 3.5 V/m, respectively. Background electric fields measured under zero-power use, were very low; ~80% of residences experienced background electric fields1 V/m. Under normal-power use, the highest mean magnetic field (0.45 μT) was found at residence R26 where an indoor power substation exists. However, ~81% of residences experienced mean magnetic fields0.1 μT. Magnetic fields measured inside the 32 residences showed also a log-normal distribution with geometric mean and geometric standard deviation of 0.04 and 3.14 μT, respectively. Under zero-power conditions, ~7% of residences experienced average background magnetic field0.1 μT. Fields from appliances showed a maximum mean electric field of 67.4 V/m from hair dryer, and maximum mean magnetic field of 13.7 μT from microwave oven. However, no single result surpassed the ICNIRP limits for general public exposures to ELF fields, but still, the interval 0.3-0.4 μT for possible non-thermal health impacts of exposure to ELF magnetic fields, was experienced in 13% of the residences. |
| Databáze: | OpenAIRE |
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