Observing Negative Air Ions Concentration in Beidaihe and Negative Air Ions’ Evaluation Standard

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Abstract:

The concept and occurrence mechanism of negative air ions (NAI) was introduced and its health care function was described. Through observing NAI concentration of six spots in Beidaihe in China, NAI evaluation standard which has seven grades is put up and the relationship between negative air ion quantity and human health is clarified clearly.

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747-750

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May 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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