一、引言大气中二氧化硫对人体、牲畜、农田危害极大,已成为环境污染主要控制成份之一。国家标准规定居民区大气中,二氧化硫最高容许量为0.15毫克/米~3。车间定为15毫克/米~3。为了监视大气中二氧化硫含量,並随时向有关部门反映,研制一种便携式大气二氧化硫检测仪是十分必要的。 I. Introduction Sulfur dioxide in the atmosphere is extremely harmful to human beings, livestock and farmland and has become one of the main control ingredients of environmental pollution. National standards for residential atmosphere, the maximum allowable sulfur dioxide 0.15 mg / m ~ 3. Workshop set at 15 mg / m ~ 3. In order to monitor the content of sulfur dioxide in the atmosphere and reflect it to relevant departments at any time, it is very necessary to develop a portable atmospheric sulfur dioxide detector.