Measurement and Exposure Assessment of Intermediate Frequency Magnetic Fields From Electronic Article Surveillance (EAS) Gates in Libraries
Exposure to magnetic fields from the electronic article surveillance (EAS) gate was evaluated in consideration of the application to epidemiological studies of library workers who are exposed continually to intermediate frequency magnetic fields from the EAS gate. Two types of exposures were investi...
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| Format: | Article |
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Frontiers Media S.A.
2022-05-01
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| Series: | Frontiers in Public Health |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpubh.2022.871134/full |
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| author | Miwa Ikuyo Miwa Ikuyo Kaoru Esaki Atsuko Aimoto Kanako Wake Sachiko Yamaguchi-Sekino Noriko Kojimahara Yukihisa Suzuki Masao Taki Masao Taki |
| author_facet | Miwa Ikuyo Miwa Ikuyo Kaoru Esaki Atsuko Aimoto Kanako Wake Sachiko Yamaguchi-Sekino Noriko Kojimahara Yukihisa Suzuki Masao Taki Masao Taki |
| author_sort | Miwa Ikuyo |
| collection | DOAJ |
| description | Exposure to magnetic fields from the electronic article surveillance (EAS) gate was evaluated in consideration of the application to epidemiological studies of library workers who are exposed continually to intermediate frequency magnetic fields from the EAS gate. Two types of exposures were investigated. One was transient exposure due to passing through or beside the gate and another was chronic exposure in the room. We measured magnetic fields from five EAS gate models which were commonly used in libraries in Japan. Detailed measurements were performed for two of them in consideration of the phase difference of vector components of magnetic flux density. The polarization of the magnetic field in the gate was investigated with the index of ellipticity. The induced electric field in a human body was numerically calculated for exposures to magnetic fields of the two gate models. The results provide a quantitative understanding of exposures during passing through or by the EAS gate. Magnetic field distribution was measured in a large room for one gate model to quantify the chronic exposure of library workers during the work at the desk. It was found that the magnetic field was distributed as a function of the horizontal distance to the nearest gatepost. The 45-point average value BIEC defined by the IEC standard was suggested to be a useful quantity to characterize the magnitude of the magnetic field from the EAS gate. Exposures to different EAS gates are expected to be compared through this quantity without detailed measurements. These results are expected to provide useful means for exposure assessment of epidemiological studies on the association between the IF-EMF exposure and possible health outcomes. |
| first_indexed | 2024-12-12T09:36:30Z |
| format | Article |
| id | doaj.art-f6c71d5245224d3dbb261c05b3202ff4 |
| institution | Directory Open Access Journal |
| issn | 2296-2565 |
| language | English |
| last_indexed | 2024-12-12T09:36:30Z |
| publishDate | 2022-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Public Health |
| spelling | doaj.art-f6c71d5245224d3dbb261c05b3202ff42022-12-22T00:28:43ZengFrontiers Media S.A.Frontiers in Public Health2296-25652022-05-011010.3389/fpubh.2022.871134871134Measurement and Exposure Assessment of Intermediate Frequency Magnetic Fields From Electronic Article Surveillance (EAS) Gates in LibrariesMiwa Ikuyo0Miwa Ikuyo1Kaoru Esaki2Atsuko Aimoto3Kanako Wake4Sachiko Yamaguchi-Sekino5Noriko Kojimahara6Yukihisa Suzuki7Masao Taki8Masao Taki9Department of Systems Design, Tokyo Metropolitan University, Hachioji, JapanElectromagnetic Compatibility Laboratory, National Institute of Information and Communications Technology, Koganei, JapanDepartment of Systems Design, Tokyo Metropolitan University, Hachioji, JapanDepartment of Systems Design, Tokyo Metropolitan University, Hachioji, JapanElectromagnetic Compatibility Laboratory, National Institute of Information and Communications Technology, Koganei, JapanWork Environment Research Group, National Institute of Occupational Safety and Health, Kawasaki, JapanEpidemiology, Shizuoka Graduate University of Public Health, Shizuoka, JapanDepartment of Systems Design, Tokyo Metropolitan University, Hachioji, JapanDepartment of Systems Design, Tokyo Metropolitan University, Hachioji, JapanElectromagnetic Compatibility Laboratory, National Institute of Information and Communications Technology, Koganei, JapanExposure to magnetic fields from the electronic article surveillance (EAS) gate was evaluated in consideration of the application to epidemiological studies of library workers who are exposed continually to intermediate frequency magnetic fields from the EAS gate. Two types of exposures were investigated. One was transient exposure due to passing through or beside the gate and another was chronic exposure in the room. We measured magnetic fields from five EAS gate models which were commonly used in libraries in Japan. Detailed measurements were performed for two of them in consideration of the phase difference of vector components of magnetic flux density. The polarization of the magnetic field in the gate was investigated with the index of ellipticity. The induced electric field in a human body was numerically calculated for exposures to magnetic fields of the two gate models. The results provide a quantitative understanding of exposures during passing through or by the EAS gate. Magnetic field distribution was measured in a large room for one gate model to quantify the chronic exposure of library workers during the work at the desk. It was found that the magnetic field was distributed as a function of the horizontal distance to the nearest gatepost. The 45-point average value BIEC defined by the IEC standard was suggested to be a useful quantity to characterize the magnitude of the magnetic field from the EAS gate. Exposures to different EAS gates are expected to be compared through this quantity without detailed measurements. These results are expected to provide useful means for exposure assessment of epidemiological studies on the association between the IF-EMF exposure and possible health outcomes.https://www.frontiersin.org/articles/10.3389/fpubh.2022.871134/fullelectromagnetic field (EMF)exposure assessmentelectronic article surveillance (EAS) gatedosimetryinduced electric fieldellipticity |
| spellingShingle | Miwa Ikuyo Miwa Ikuyo Kaoru Esaki Atsuko Aimoto Kanako Wake Sachiko Yamaguchi-Sekino Noriko Kojimahara Yukihisa Suzuki Masao Taki Masao Taki Measurement and Exposure Assessment of Intermediate Frequency Magnetic Fields From Electronic Article Surveillance (EAS) Gates in Libraries Frontiers in Public Health electromagnetic field (EMF) exposure assessment electronic article surveillance (EAS) gate dosimetry induced electric field ellipticity |
| title | Measurement and Exposure Assessment of Intermediate Frequency Magnetic Fields From Electronic Article Surveillance (EAS) Gates in Libraries |
| title_full | Measurement and Exposure Assessment of Intermediate Frequency Magnetic Fields From Electronic Article Surveillance (EAS) Gates in Libraries |
| title_fullStr | Measurement and Exposure Assessment of Intermediate Frequency Magnetic Fields From Electronic Article Surveillance (EAS) Gates in Libraries |
| title_full_unstemmed | Measurement and Exposure Assessment of Intermediate Frequency Magnetic Fields From Electronic Article Surveillance (EAS) Gates in Libraries |
| title_short | Measurement and Exposure Assessment of Intermediate Frequency Magnetic Fields From Electronic Article Surveillance (EAS) Gates in Libraries |
| title_sort | measurement and exposure assessment of intermediate frequency magnetic fields from electronic article surveillance eas gates in libraries |
| topic | electromagnetic field (EMF) exposure assessment electronic article surveillance (EAS) gate dosimetry induced electric field ellipticity |
| url | https://www.frontiersin.org/articles/10.3389/fpubh.2022.871134/full |
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