environmental health xii. electromagnetic radiation
DESCRIPTION
Environmental Health XII. Electromagnetic radiation. Shu-Chi Chang, Ph.D., P.E., P.A. Assistant Professor 1 and Division Chief 2 1 Department of Environmental Engineering 2 Division of Occupational Safety and Health, Center for Environmental Protection and Occupational Safety and Health - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/1.jpg)
Environmental Health XII. Electromagnetic radiation
Shu-Chi Chang, Ph.D., P.E., P.A.Assistant Professor1 and Division Chief2
1Department of Environmental Engineering2Division of Occupational Safety and Health,
Center for Environmental Protection and Occupational Safety and Health
National Chung Hsing University
Friday, June 15, 2007
![Page 2: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/2.jpg)
Outline
Introduction Nonionizing radiation Ionizing radiation Natural background radiation Artificial sources Nuclear power operations Nuclear weapon testing Consumer products Control and benefits
![Page 3: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/3.jpg)
Introduction
![Page 4: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/4.jpg)
Introduction
![Page 5: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/5.jpg)
Nonionizing radiation
UV Visible light Infrared radiation Microwave Radio frequency Electro-magnetic field Standards for control
![Page 6: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/6.jpg)
Ionizing radiation
Types X-rays Alpha, beta and
gamma rays Biological effects Unit of dose Dose-response
relationships Types of exposures
![Page 7: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/7.jpg)
![Page 8: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/8.jpg)
Natural background radiation
Cosmic radiation Terrestrial readiation 40K (potassium), 3H, 14C, and 226Ra
![Page 9: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/9.jpg)
![Page 10: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/10.jpg)
![Page 11: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/11.jpg)
Artificial sources
Radiation machines Industrial use Commercial use Research use
Radioactive materials
![Page 12: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/12.jpg)
Nuclear power operations
Mining, milling, and fabrication Treatment of spent fuel Commercial nuclear power plants
![Page 13: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/13.jpg)
Nuclear weapon testing
The late 1940s through the early 1960s
Nevada
![Page 14: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/14.jpg)
Consumer products
Sources Within the home Workplace Personal basis (consumer products)
Cigarette smoking Others
![Page 15: Environmental Health XII. Electromagnetic radiation](https://reader036.vdocuments.us/reader036/viewer/2022070402/56813870550346895da01fda/html5/thumbnails/15.jpg)
Control and benefits
Controls Potassium Radon Medical X-ray machine Capsule- and loose-form
Benefits Modernization Medical advent Industrial application Agricultural usage
Genetically modified organisms Insect control