To investigate the effects of a 2450 MHz microwave exposure to different histidine auxotrophic mutants of the bacterium Salmonella typhimurium LT2 according to the Ames test.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
2.45 GHz
Exposure duration:
2, 4, 6, 8, 9, 10, 11, 12, 13, 14, 15, 17, 20 and 23 sec
|
|
| Frequency | 2.45 GHz |
|---|---|
| Exposure duration | 2, 4, 6, 8, 9, 10, 11, 12, 13, 14, 15, 17, 20 and 23 sec |
| Exposure source | |
|---|---|
| Setup | Top agar tubes were placed in the microwave oven at points where the power density was the same. |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| power density | 5.1 W/cm² | - | calculated | - | - |
A significant rise in the mutation rates was found with microwave exposure. During exposure a constant rise in temperature was observed (up to 100°C after 23 sec of irradiation). To exclude that heat alone did cause the significant rise in mutation rate, comparable thermal testings were conducted in water baths. The mechanism of cellular damage due to microwave radiation is unknown. The authors conclude that microwave radiation of 2450 MHz is a potent mutagen and therefor a potential carcinogenic agent for animals.
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