Metal-framed spectacles and implants and specific absorption rate among adults and children using mobile phones at 900/1800/2100 MHz.
The specific absorption rate (SAR) from mobile telephones at horizontal and vertical positions is investigated in human adult and child heads wearing metal-rim spectacles and having metallic implants. The SAR values calculated by Finite Difference Time Domain (FTDT) method are compared to the actual ANSI/IEEE standards and to the 900/1800/2100 MHz electromagnetic radiation limits according to EU standards. Our calculation shows a maximum of the cellular SAR in the child head, which in the case of metallic implant could be as much as 100% higher than in the adult head. The averaging on 1 and 10 g tissue-masses shows SAR generally under the limit of 519/1999/EC standards. However, in the case of 2100 MHz with vertical position of the phone for adults and of the 900 MHz for children with metallic implants the ANSI/IEEE limits are exceeded.
Joó
Ervin
E
Biotechnics Department, Szent István University, Godollo, Hungary.
Szász
András
A
Szendrö
Péter
P
D000042:Absorption; D000328:Adult; D040421:Cell Phone; D002648:Child; D004574:Electromagnetic Fields; D006801:Humans; D007700:Kinetics; D008670:Metals / Q000528:radiation effects*; D019736:Prostheses and Implants; D011846:Radio Waves; D012867:Skin / Q000528:radiation effects*
D008670:Metals