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Portable Optical Air Sensor
Optical air sensors center around detection of some form of light created by a chemical process, in order to identify or measure amounts of individual molecules. Portable sensors are specifically sensors that are easy to transport and use in the field.
==Air Pollution==
Air pollution is a large player in the mortality rate of people today, particularly in newly developing countries with heavy industrial presence. A study done in 2000 showed that the World Health Organization estimated fine particulate air pollution, which could be a number of components, including acids (such as nitrates and sulfates), organic chemicals, metals, and soil or dust particles, caused 800,000 deaths and a total loss of 6.4 million years of life in major cities alone around the globe in 2000. These numbers are shown to be increasing due to urbanization, and the future numbers predicted in that study have already been exceeded.〔 A study done by Ezzati et. al shows that indoor smoke from solid fuels and urban outdoor air pollution are a close second to unsafe water in terms of burden of disease and death due to environmental concerns. To measure this air pollution, the commonly accepted methods involve expensive, complex, and stationary equipment. Recently, there is a push to move away from those expensive, stationary, and complex pieces of equipment to cheaper, portable sensors to aid in field observations with high speeds.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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